AMERICAN CENTURY CALIFORNIA TAX FREE & MUNICIPAL FUNDS
N-30D, 1999-04-30
Previous: CBA MONEY FUND, 485APOS, 1999-04-30
Next: MURPHY OIL CORP /DE, 305B2, 1999-04-30



[front cover]
                                                              FEBRUARY 28, 1999

SEMIANNUAL REPORT
- -----------------
AMERICAN CENTURY

[graphic of stairs]

AMERICAN CENTURY
- ---------------------------------
CALIFORNIA TAX-FREE MONEY MARKET
CALIFORNIA MUNICIPAL MONEY MARKET

                                                 [american century logo(reg.sm)]
                                                                        American
                                                                         Century


[inside front cover]

AMERICAN CENTURY KEEPS WITH TRADITION
- --------------------------------------------------------------------------------

FOLLOWING BENHAM'S FOOTSTEPS

On March 1, we made it easier for you to do business with us. We simplified  our
organizational  structure by  eliminating  the  venerable  Benham and  Twentieth
Century names, and putting all our funds under American Century. The name change
will not affect your funds' investment  management--the proven Benham investment
philosophy, experienced portfolio management teams, and legacy of innovation and
high-quality performance remain.

CONSISTENT,  SOLID  PERFORMANCE--We'll  continue  to  adhere  to the  investment
practices  that have  helped  our  fixed-income  funds  perform so well over the
years. In 1998,  two-thirds of American Century bond funds beat their peer group
average, according to Lipper, Inc.

CONSISTENT  INVESTMENT  PHILOSOPHY--American  Century  fixed-income  funds  will
continue to offer a "pure play" on their sector of the market, as they did under
Benham.

CONTINUITY  OF THE  MANAGEMENT  TEAM--The  investment  process  is not all  that
remains  the same;  we've  retained  our core team of  experienced  fixed-income
portfolio managers.

    *  Experience--The  more than 35 fixed-income  investment  professionals  at
       American  Century have an average of nine years of investment  management
       experience.

    *  Bigger and better--Since  American Century was formed,  we've doubled the
       size  of the  original  Benham  management  team  in our  Mountain  View,
       California office.

TRADITION OF INNOVATION--Like  Benham before it, American Century is a leader in
fixed-income  fund  innovation.  For example,  we introduced a total of four new
fixed-income  funds  in the  last  three  years,  including  the  first  no-load
inflation-adjusted bond fund.

We continue to run our fixed-income operation from our offices in Mountain View,
California, which is also home to our walk-in Investor Center.

We look forward to continuing to meet your fixed-income  investment needs in the
Benham tradition.

WHAT'S NEW . . .

    We now classify our funds in easy-to-remember  categories based on objective
and risk. The four  objective  categories  are:  CAPITAL  PRESERVATION,  INCOME,
GROWTH AND INCOME,  and GROWTH.  The three risk  categories  are:  CONSERVATIVE,
MODERATE,  and AGGRESSIVE.  This new  classification  system makes it easier for
investors to identify which funds are right for them.

    Turn to the  inside  back  cover of this  report  to see a list of the funds
classified by objective and risk. For  definitions of the fund  categories,  see
the Glossary.

Past performance is no guarantee of future results.

[left margin]

CALIFORNIA TAX-FREE MONEY MARKET
(BCTXX)
- ----------------------------------

CALIFORNIA MUNICIPAL MONEY MARKET
(BNCXX)
- ----------------------------------


Our Message to You
- --------------------------------------------------------------------------------
/photo of James E. Stowers III and James E. Stowers, Jr./
James E. Stowers III, seated, with James E. Stowers, Jr.

     During the six-month period ended February 28, 1999, the financial  markets
experienced  a dramatic  shift in  expectations.  Six months ago,  the  economic
outlook appeared grim--financial problems in Asia, Russia, and Latin America led
to expectations of an impending U.S. economic  slowdown.  That sent the domestic
stock market reeling and pushed U.S. bond yields to record lows.

     But expectations began to change in the fourth quarter of 1998. The Federal
Reserve cut interest  rates three times in six weeks,  bolstering  confidence in
the economy.  That, in turn, brought greater stability to U.S. financial markets
and eventually produced a stock market rebound.

     By early 1999,  reports of the strongest  quarterly  economic  surge in two
years caught  investors by surprise.  Bond yields rose  reflexively  amid higher
inflation  expectations,  but productivity gains and competitive  pressures kept
inflation at its lowest level in a dozen years.

     The resiliency of California's economy was especially surprising. With many
Asian  economies--including  six of the state's ten biggest export markets--at a
standstill,  there were  concerns that the economic  stagnation  would spread to
California.  However,  the state's  economy  hardly  missed a beat and is now as
healthy as it has been in a decade.

     This economic environment has been positive for California municipal bonds.
All seven of American Century's  California  municipal funds, ranging from money
market portfolios to long-term and high-yield bond funds, produced above-average
returns  during  the  past  six  months,  as well as over  longer  time  periods
(according to Lipper Inc.).  We've been  investing in the  California  municipal
market for more than 15 years, and the consistent  performance of our California
funds reflects that experience.

     At American  Century,  we've  recently  made some changes that we hope will
make it easier  for you to  identify  and  select  the funds that best meet your
investment  needs.  We  reorganized  our family of 71 funds based on  investment
goals and risk level (see the front and back  inside  covers of this  report for
more details).

     In  addition,  California  municipal  fund  shareholders  were the first to
receive  our  new  simplified  prospectus.   This  document  provides  the  fund
information  you need in clear and  straightforward  language,  and it  includes
helpful tips and definitions of investment terms.

     We want your  experience  with  American  Century to be  rewarding,  and we
appreciate your continued confidence in us.

Sincerely,

/s/James E. Stowers, Jr.                 /s/James E. Stowers III
James E. Stowers, Jr.                    James E. Stowers III
Chairman of the Board and Founder        Chief Executive Officer

[right margin]

                 Table of Contents
   Report Highlights ......................................................    2
   Frequently Asked Questions .............................................    3
CALIFORNIA TAX-FREE MONEY MARKET
   Performance Information ................................................    4
   Management Q&A .........................................................    5
   Portfolio Composition
      by Security Type ....................................................    5
   Portfolio Composition
      by Credit Rating ....................................................    6
   Schedule of Investments ................................................    7
CALIFORNIA MUNICIPAL MONEY MARKET
   Performance Information ................................................   12
   Management Q&A .........................................................   13
   Portfolio Composition
      by Security Type ....................................................   13
   Portfolio Composition
      by Credit Rating ....................................................   14
   Schedule of Investments ................................................   15
FINANCIAL STATEMENTS
   Statements of Assets and
      Liabilities .........................................................   19
   Statements of Operations ...............................................   20
   Statements of Changes
      in Net Assets .......................................................   21
   Notes to Financial
      Statements ..........................................................   22
   Financial Highlights ...................................................   24
OTHER INFORMATION
   Background Information
      Investment Philosophy
         and Policies .....................................................   26
      Lipper Rankings .....................................................   26
      Credit Rating
         Guidelines .......................................................   26
      Investment Team
         Leaders ..........................................................   26
   Glossary ...............................................................   27


                                                  www.americancentury.com      1


Report Highlights
- --------------------------------------------------------------------------------

CALIFORNIA TAX-FREE MONEY MARKET

*   The portfolio outperformed the average California tax-free money market fund
    for the last six months, according to Lipper Inc.

*   California Tax-Free Money Market's longer-term returns are also consistently
    better than average.

*   A  major  reason  for  the  portfolio's   solid  relative  returns  was  our
    lower-than-average  management fee. Other things being equal, lower expenses
    mean higher yields and returns for our shareholders.

*   We continue to be very conservative regarding credit decisions,  keeping the
    fund fully invested in first-tier municipal money market securities.

*   Yields and returns on municipal  money market  funds  declined  over the six
    months  as a result  of lower  short-term  interest  rates,  as well as less
    supply and greater demand for tax-free money market securities.

*   Looking  ahead,  we may increase  the average  maturity in April and May, if
    seasonal supply and demand factors cause a temporary increase in yields.

CALIFORNIA MUNICIPAL  MONEY MARKET

*   California  Municipal Money Market performed well,  producing better returns
    than the  average  California  tax-free  money  market fund for the last six
    months, according to Lipper Inc.

*   California   Municipal   Money   Market's   longer-term   returns  are  also
    consistently better than average.

*   Key  reasons  for  the  portfolio's  solid  relative  performance  were  our
    lower-than-average  management fee and large  percentage of  higher-yielding
    AMT securities.

*   We continue to be very conservative regarding credit decisions,  keeping the
    fund fully invested in first-tier municipal money market securities.

*   Yields and returns on municipal  money market  funds  declined  over the six
    months  as a result  of lower  short-term  interest  rates,  as well as less
    supply and greater demand for tax-free money market securities.

*   Looking  ahead,  we may increase  the average  maturity in April and May, if
    seasonal supply and demand factors cause a temporary increase in yields.

[left margin]

         CALIFORNIA TAX-FREE MONEY MARKET
                   (BCTXX)
TOTAL RETURNS:               AS OF 2/28/99
    6 Months                        1.29%*
    1 Year                           2.85%
NET ASSETS:                 $452.1 million
7-DAY CURRENT YIELD:                 2.31%
INCEPTION DATE:                    11/9/83

        CALIFORNIA MUNICIPAL MONEY MARKET
                   (BNCXX)
TOTAL RETURNS:               AS OF 2/28/99
    6 Months                        1.35%*
    1 Year                           2.95%
NET ASSETS:                 $177.0 million
7-DAY CURRENT YIELD:                 2.41%
INCEPTION DATE:                   12/31/90

* Not annualized.

See  Total  Returns  on pages 4 and 12.  Investment  terms  are  defined  in the
Glossary on page 27.


2      1-800-345-2021


Money Market Funds--Frequently Asked Questions
- --------------------------------------------------------------------------------

CAN I MAKE DIRECT DEPOSITS INTO MY MONEY MARKET FUND ACCOUNT?

     Yes. You can arrange for direct deposit of your paycheck,  Social  Security
check,  Treasury Direct interest payment,  military allotment,  or payments from
other  government  agencies.  Give us a call, and we will send you the necessary
information to set it up.

WHAT IS THE HOLDING PERIOD ON NEW DEPOSITS INTO MY ACCOUNT?

     Generally,  there is an  eight-business-day  holding  period for  deposited
funds  (initial  investments  in a new account  are held for 15 calendar  days).
There is a  one-business-day  holding  period for U.S.  Treasury  checks,  money
orders, and travelers' checks.

IS THERE A LIMIT ON THE NUMBER OF CHECKS I CAN WRITE ON MY MONEY MARKET ACCOUNT?

     No. You can write as many checks as you like at no charge, as long as each
check is for $100 or more.

IS THERE AN EASY WAY TO MOVE  MONEY  FROM MY MONEY  MARKET  FUND INTO A STOCK OR
BOND FUND?

     Yes.  Moving money  between  funds is called an  exchange,  and there is no
limit  on the  number  of  exchanges  you can make  out of a money  market  fund
account.  However,  there is a limit of six  exchanges  per calendar year out of
stock and bond fund accounts.

     Exchanges can be made by:

*    visiting our Web site at www.americancentury.com*

*    using our Automated Information Line (1-800-345-8765)*

*    calling an Investor Relations Representative at 1-800-345-2021*

*    writing us a letter

HOW DO I DECIDE  WHETHER A TAXABLE MONEY MARKET FUND OR A TAX-FREE  MONEY MARKET
FUND IS RIGHT FOR ME?

     The most important  factor to consider is your tax bracket.  Tax-free money
market funds  typically  offer lower yields than taxable  funds,  but you pay no
federal income taxes on the income from a tax-free fund.

     If you are in one of the higher federal income tax brackets, taxes will eat
up a big part of your income from a taxable  money  market  fund,  so a tax-free
investment may be better for you. If you're in a lower tax bracket, then you can
usually earn more in a taxable fund even after taxes are deducted.

     We can help you  figure it out.  If you give us a call and tell us what tax
bracket  you're in, we can tell you whether you're likely to earn more after-tax
income in a tax-free or a taxable money market fund.

IF YOU HAVE ANY  QUESTIONS  ABOUT OUR MONEY MARKET  FUNDS,  CALL US TOLL FREE AT
1-800-345-2021 OR E-MAIL US AT OUR WEB SITE, WWW.AMERICANCENTURY.COM.


*  Before an  investor  can make an exchange  via calling an Investor  Relations
   Representative,  using our Automated  Information  Line, or via our Web site,
   the shareholder must have first provided us with  authorization,  in writing,
   to do so.

[right margin]

A FASTER AND EASIER WAY TO DEPOSIT MUTUAL FUND DISTRIBUTIONS

If you prefer to get your fund dividend or capital gains  distributions  sent to
you  instead of  reinvesting  them,  there are a couple of ways that you can get
access to this money faster than waiting for a check in the mail:

*    YOU CAN HAVE DISTRIBUTIONS DEPOSITED DIRECTLY INTO YOUR MONEY MARKET
     ACCOUNT. The money will be deposited the same day that the distributions
     are paid.

*    DISTRIBUTIONS CAN BE SENT ELECTRONICALLY TO YOUR BANK ACCOUNT. The money
     will be available in your bank account within three days.

Contact  our  Investor  Relations  Representatives  to set up  either  of  these
options.


                                                  www.americancentury.com      3


California Tax-Free Money Market--Performance
- --------------------------------------------------------------------------------

<TABLE>
TOTAL RETURNS AS OF FEBRUARY 28, 1999

                     CALIFORNIA TAX-FREE   CALIFORNIA TAX-EXEMPT MONEY MARKET FUNDS(2)
                        MONEY MARKET          AVERAGE RETURN       FUND'S RANKING
<S>                 <C>                      <C>                    <C>                      
6 MONTHS(1)                1.29%                  1.19%                  --
1 YEAR                     2.85%                  2.62%             10 OUT OF 55
===================================================================================
AVERAGE ANNUAL RETURNS
===================================================================================
3 YEARS                    3.02%                  2.82%             11 OUT OF 50
5 YEARS                    3.03%                  2.90%             10 OUT OF 43
10 YEARS                   3.36%                  3.34%              8 OUT OF 20
</TABLE>

The fund's inception date was 11/9/83.

(1) Returns for periods less than one year are not annualized.

(2) According to Lipper Inc., an independent mutual fund ranking service.

See pages 26-27 for more information about returns and Lipper fund rankings.

PORTFOLIO AT A GLANCE
                            2/28/99           8/31/98
NUMBER OF SECURITIES          94                91
WEIGHTED AVERAGE
   MATURITY                 26 DAYS           34 DAYS
EXPENSE RATIO                0.50%*            0.50%

* Annualized.

YIELDS AS OF FEBRUARY 28, 1999

  7-DAY CURRENT YIELD               2.31%

  7-DAY EFFECTIVE YIELD             2.33%

  7-DAY TAX-EQUIVALENT YIELDS
    34.70% TAX BRACKET              3.54%
    37.42% TAX BRACKET              3.69%
    41.95% TAX BRACKET              3.98%
    45.22% TAX BRACKET              4.22%

Past performance does not guarantee future results.

Money market funds are neither  insured nor  guaranteed by the FDIC or any other
government agency.

Yields will fluctuate, and although the fund seeks to preserve the value of your
investment  at $1 per share,  it is possible to lose money by  investing  in the
fund. The 7-day yield more closely reflects  earnings of the fund than the total
return.


4      1-800-345-2021


California Tax-Free Money Market--Q&A
- --------------------------------------------------------------------------------
/photo of Todd Pardula/

     An  interview  with Todd  Pardula,  a portfolio  manager on the  California
Tax-Free and Municipal funds investment team.

HOW DID  CALIFORNIA  TAX-FREE  MONEY MARKET  PERFORM DURING THE SIX MONTHS ENDED
FEBRUARY 28, 1999?

     The portfolio  performed  well,  producing a better return than the average
California  tax-free  money  market  fund,  according to Lipper Inc. For the six
months, the portfolio's total return was 1.29%,  compared with the 1.19% average
return of the 55 "California  Tax-Exempt  Money Market Funds" tracked by Lipper.
California Tax-Free Money Market's longer-term returns are similarly strong (see
the Total  Returns table on the previous page for  additional  fund  performance
comparisons).

WHY DID CALIFORNIA TAX-FREE MONEY MARKET OUTPERFORM ITS LIPPER GROUP?

     A  major  reason  for  the  fund's  strong  relative  performance  was  our
lower-than-average management fee. Other things being equal, lower expenses mean
higher yields and returns for our shareholders.

     Another reason we outperformed the Lipper group was our ability to purchase
the most attractively priced variable-rate notes, or "floaters." We work hard to
develop  excellent  relationships  with  dealers  that  offer the best  rates on
floaters.

     For the six-month period,  floaters made up about 80% of the portfolio,  so
if we can buy floaters with 10  additional  basis points of yield (a basis point
equals  0.01%,  so 10 basis points  equals  0.10%),  we can get an extra 8 basis
points of performance for the fund. That's a significant edge when total returns
are in the 2% range.

CALIFORNIA TAX-FREE MONEY MARKET'S RELATIVE PERFORMANCE WAS STRONG, BUT ITS
TOTAL RETURN SEEMS LOW. WHY?

     The  fund's  total  return is related to the  general  level of  short-term
interest  rates.  In the second  half of 1998,  the  Federal  Reserve  (the Fed)
lowered rates by 75 basis points  (0.75%)  because a series of global  financial
crises threatened U.S. economic growth.

     When interest rates are low,  municipalities  are inclined to lock in those
rates by issuing  more  long-term  bonds than  short-term  notes.  The supply of
short-term securities was also reduced by the excellent health of the California
economy,  which has diminished  municipal  borrowing needs.  While these factors
reduced supply,  demand for short-term tax-free securities surged. The imbalance
between supply and demand sent yields on tax-free money market funds in February
to their lowest levels since 1994.

YOU REDUCED THE PORTFOLIO'S WEIGHTED AVERAGE MATURITY FROM 34 DAYS TO  26 DAYS.
WHY?

     We allowed the average  maturity to shorten  because we didn't think yields
on one-year  municipal  securities were attractive enough to justify adding more
of them to the portfolio. Instead, we used new money and cash from

[right margin]

"The  portfolio  performed  well,  producing  a better  return  than the average
California tax-free money market fund, according to Lipper Inc."

[pie charts - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

AS OF FEBRUARY 28, 1999
Variable-Rate Notes     79%
Put Bonds                9%
Municipal Notes          5%
Bonds less than 1 Year   4%
Commercial Paper         3%

AS OF AUGUST 31, 1998
Variable-Rate Notes     78%
Put Bonds                9%
Municipal Notes          6%
Bonds less than 1 Year   3%
Commercial Paper         4%

Security types are defined on page 27.


                                                  www.americancentury.com      5


California Tax-Free Money Market--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

maturing securities to buy floaters, which have relatively short maturities.  We
were content to hold  floaters  even in a declining  interest  rate  environment
because their yields were virtually the same as those on one-year securities.

HOW DID YOU MANAGE THE FUND'S  CREDIT QUALITY?

     We continued to be very conservative  regarding credit  decisions,  keeping
the fund  fully  invested  in  first-tier  municipal  money  market  securities.
First-tier obligations have generally received the highest credit rating from at
least two nationally recognized  statistical rating organizations.  For example,
the SP1 rating  category  (which  includes  SP1+) is  Standard & Poor's  highest
rating for  short-term  municipal  debt. The SP2 rated  securities  shown in the
chart at left are  considered  first tier because they received top ratings from
Fitch and Moody's, two other ratings services.

     Those SP2 securities are backed by Union Bank of California, whose majority
owner is Bank of Tokyo  Mitsubishi.  We also believe Union Bank of California is
worthy of a higher  S&P rating  because  its  operations  are  governed  by U.S.
banking  regulations and are primarily  limited to California.  These securities
offer an additional  40-50 basis points in yield over  securities  rated SP1+ at
what we believe is minimal additional credit risk.

WHAT IS YOUR OUTLOOK FOR INTEREST RATES?

     The outlook for rates is uncertain.  On the one hand, it seems unlikely the
United  States  can  remain  an oasis of  prosperity  amid the  global  economic
slowdown.  That would  argue for further Fed  interest  rate cuts.  On the other
hand,  despite  global  turmoil,  the U.S.  economy has so far continued to grow
rapidly.  And although  inflation is dormant now, oil prices have  rebounded and
the  unemployment  rate remains very low.  Those factors would seem to argue for
higher interest rates.

AND WHAT'S YOUR OUTLOOK FOR THE FUND?

     We may increase the fund's average maturity in April and May, when seasonal
supply and demand factors  typically affect the tax-exempt money market.  That's
when many  shareholders  withdraw money from tax-free and municipal money market
funds to pay their  income  taxes.  Those  redemptions  mean less demand for and
greater  supply of tax-free money market  securities.  The net effect is often a
temporary  increase in yields on one-year  securities.  Despite  those  seasonal
factors,  yields and returns on tax-free money market funds are likely to remain
modest  as long as  inflation  is nearly  non-existent  and  interest  rates are
historically low.

[left margin]

"We continued to be very conservative  regarding credit  decisions,  keeping the
fund fully invested in first-tier municipal money market securities."

PORTFOLIO COMPOSITION BY CREDIT RATING
               % OF FUND INVESTMENTS
              AS OF             AS OF
             2/28/99           8/31/98
SP1+           79%               73%
SP1            11%               16%
SP2            10%               11%


Ratings provided by Standard & Poor's.  See Credit Rating  Guidelines on page 26
for more information.

"Yields and returns on tax-free  money market funds are likely to remain  modest
as long as inflation is nearly  non-existent and interest rates are historically
low."


6      1-800-345-2021


Cal. Tax-Free Money Market--Sch. of Investments
- --------------------------------------------------------------------------------

FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                     Value
- --------------------------------------------------------------------------------

SHORT-TERM MUNICIPAL SECURITES
             $  2,912,000  ABN Amro Munitops Certificates
                              Trust Receipts, Series 1998-17,
                              VRDN, 2.79%, 3/3/99 (FGIC)
                              (SBBPA: ABN Amro Bank
                              N.V.) (Acquired 11/18/98--
                              12/31/98, Cost $2,912,000)(1)      $  2,912,000
                2,500,000  ABN Amro Munitops Certificates
                              Trust Receipts, Series 1998-10,
                              VRDN, 2.79%, 3/3/99 (FGIC)
                              (SBBPA: ABN Amro Bank N.V.)
                              (Acquired 8/19/98, Cost
                              $2,500,000)(1)                        2,500,000
                6,500,000  ABN Amro Munitops Certificates
                              Trust Receipts, Series 1998-25,
                              VRDN, 3.10%, 6/2/99 (FGIC)
                              (SBBPA: ABN Amro Bank N.V.)
                              (Acquired 12/2/98, Cost
                              $6,500,000)(1)                        6,500,000
                2,325,000  Agoura Hills Multifamily  
                              Housing Rev.,  (Oakridge
                              Apartments), VRDN, 2.55%, 
                              3/3/99 (LOC:
                              Commerzbank A.G.)                     2,325,000
                2,000,000  Association of Bay Area
                              Governments Financing Auth.
                              Rev. COP, (Bentley School),
                              VRDN, 2.70%, 3/3/99 (LOC:
                              Banque Nationale de Paris S.A.)       2,000,000
               10,800,000  Avalon Community Improvement
                              Agency Tax Allocation Rev., 
                              (Community Improvement
                              Area), VRDN, 3.00%, 3/4/99 (LOC:
                              Union Bank of California, N.A.)      10,800,000
               10,300,000  Azusa Multifamily Housing Rev.,
                              (Pacific Glen Apartments),
                              VRDN, 2.60%, 3/4/99 (FNMA
                              Collateral Agreement)                10,300,000
                5,000,000  Bassett Unified School District
                              COP, (Capital  Improvement),  
                              VRDN, 3.20%, 3/4/99 (LOC:
                              Union Bank of California, N.A.)       5,000,000
                6,400,000  California Economic Development
                              Financing Auth. Rev., Series
                              1998 C, VRDN, 3.50%,
                              3/1/99 (LOC: Bank of America
                              N.T. & S.A.)                          6,400,000
                4,400,000  California Educational Facilities
                              Auth. Rev., (Mount St. Marys
                              College), VRDN, 2.40%,
                              3/3/99 (LOC: Allied Irish
                              Banks, PLC)                           4,400,000
                3,500,000  California Educational Facilities
                              Auth. Rev., Series 1998 A,
                              (University Judaism), VRDN,
                              2.70%, 3/4/99 (LOC: Allied
                              Irish Banks, PLC)                     3,500,000

Principal Amount                                                     Value
- --------------------------------------------------------------------------------

             $  4,700,000  California Health Facilities Auth.
                              Rev., (Episcopal Home), VRDN,
                              2.70%, 3/1/99 (LOC: Union
                              Bank of California, N.A.)          $  4,700,000
                  910,000  California Health Facilities
                              Financing Auth. Rev., (Little Co.
                              Mary Health Service), 3.50%,
                              10/1/99 (AMBAC)                         911,550
                  490,000  California Health Facilities 
                              Financing Auth. Rev.,
                              Series 1990 A, (Pooled Project), 
                              VRDN, 2.10%, 3/3/99 (LOC:
                              Rabobank Nederland)                     490,000
                3,500,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1995 C, (Catholic Healthcare
                              West), VRDN, 2.60%, 3/3/99
                              (MBIA) (SBBPA: Rabobank
                              Nederland)                            3,500,000
                2,500,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1998 A, (Catholic Healthcare
                              West), 4.50%, 7/1/99                  2,510,688
                3,290,000  California Housing Financing
                              Agency Rev., 3.60%, 4/8/99
                              (MBIA) (SBBPA: Credit Suisse
                              First Boston, Inc.) (Acquired
                              8/7/98, Cost $3,290,000)(1)           3,290,000
               10,500,000  California Pollution Control
                              Financing Auth. Rev., (Chevron
                              USA Inc.), 3.65%, 5/15/99
                              (Guaranteed: Chevron Corp.)          10,500,000
                1,000,000  California Pollution Control
                              Financing Auth. Rev., (Chevron
                              USA Inc.), 3.10%, 11/15/99
                              (Guaranteed: Chevron Corp.)           1,000,000
                3,000,000  California Pollution Control
                              Financing Auth. Rev., Series
                              1986 B, (Southern California
                              Edison), VRDN, 3.55%, 3/1/99
                              (Guaranteed: Southern
                              California Edison Company)            3,000,000
                1,700,000  California Pollution Control
                              Financing Auth. Rev., Series
                              1986 C, (Southern California
                              Edison), VRDN, 3.55%, 3/1/99
                              (Guaranteed: Southern
                              California Edison Company)            1,700,000
                5,000,000  California Public Capital
                              Improvements Financing Auth.
                              Rev., Series 1988 C, VRDN,
                              3.10%, 3/15/99 (LOC:
                              National Westminster Bank
                              PLC)                                  5,000,000
                4,000,000  California Rev. Anticipation Notes,
                              4.00%, 6/30/99                        4,010,873

See Notes to Financial Statements


                                                  www.americancentury.com      7


Cal. Tax-Free Money Market--Sch. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                     Value
- --------------------------------------------------------------------------------

              $10,000,000  California School Cash Reserve
                              Program Auth. Rev., Series
                              1998 A, 4.50%, 7/2/99 (GIC:
                              Trinity Funding Corporation)       $ 10,024,667
                5,000,000  California Statewide Communities
                              Apartment Development Auth.
                              Rev., (Whispering Winds
                              Apartments), VRDN, 2.70%,
                              3/3/99 (LOC: Continental
                              Casualty Co.)                         5,000,000
                1,905,000  California Statewide Communities
                              Development Auth. COP, 4.25%,
                              4/1/99 (MBIA)                         1,905,621
               22,000,000  California Statewide Community
                              Development Auth. Rev., Floating
                              Rate Trust Receipts, 2.95%,
                              3/3/99 (FSA) (SBBPA: Bank
                              of New York) (Acquired
                              7/2/98--8/12/98, Cost
                              $22,000,000)(1)(2)                   22,000,000
                7,700,000  California Statewide COP,
                              (Covenant Retirement
                              Community), VRDN, 2.75%,
                              3/4/99 (LOC: LaSalle National
                              Bank)                                 7,700,000
                2,500,000  Covina Redevelopment Agency
                              Multifamily Housing Rev.,
                              (Shadowhills Apartments),
                              VRDN, 2.60%, 3/4/99 (FNMA
                              Collateral Agreement)                 2,500,000
                6,500,000  East Bay Municipal Utility District
                              Commercial Paper, 3.00%,
                              3/9/99 (SBBPA: Westdeutsche
                              Landesbank Girozentrale)              6,500,000
                2,990,000  Fillmore Public Financing Auth.
                              Tax Allocation, Series 1998 B,
                              (Central City Redevelopment),
                              VRDN, 2.45%, 3/4/99 (LOC:
                              California State Teachers'
                              Retirement System)                    2,990,000
                  990,000  Fontana Special Tax, (Community
                              Facilities District No. 2-A),
                              4.00%, 9/1/99 (MBIA)                    991,941
                2,000,000  Fremont COP, (Family Resource
                              Center Financing), VRDN,
                              2.45%, 3/4/99 (LOC: KBC
                              Bank N.V.)                            2,000,000
                1,000,000  Fremont Unified High School
                              District Santa Clara County GO,
                              Series 1998 A, 7.00%, 9/1/99
                              (FGIC)                                1,019,661
                2,000,000  Glendale Industrial Development
                              Auth. Rev., (Reliance
                              Development), VRDN, 2.95%,
                              3/15/99 (LOC: Lloyds Bank
                              PLC)                                  2,000,000
                1,215,000  Hanford COP, (Public IMPC Corp.),
                              VRDN, 3.00%, 3/4/99 (LOC:
                              Union Bank of California, N.A.)       1,215,000

Principal Amount                                                     Value
- --------------------------------------------------------------------------------

             $  6,155,000  Hanford Sewer Rev., Series
                              1996 A, VRDN, 3.00%,
                              3/4/99 (LOC: Union Bank of
                              California, N.A.)                  $  6,155,000
                3,500,000  Hemet Multifamily Housing Auth.
                              Rev., (Sunwest Resort), VRDN,
                              2.60%, 3/4/99 (LOC: FHLB)             3,500,000
                4,200,000  Hemet Multifamily Housing Auth.
                              Rev., (West Acacia), VRDN,
                              2.55%, 3/4/99 (LOC: FHLB)             4,200,000
                2,200,000  Irvine Improvement Bond Act
                              1915, (Assessment District
                              No. 94-15), VRDN, 3.10%,
                              3/1/99 (LOC: Canadian
                              Imperial Bank of Commerce)            2,200,000
                4,200,000  Irvine Improvement Bond Act
                              1915, (Assessment District
                              No. 97-17), VRDN, 3.10%,
                              3/1/99 (LOC: Bayerische
                              Hypo-Und Vereinsbank A.G.)            4,200,000
                1,000,000  Irvine Ranch Water District GO,
                              Series 1988 A, (Improvement
                              District No. 284), VRDN, 3.00%,
                              3/3/99 (LOC: Landesbank
                              Hessen-Thuringen Girozentrale)        1,000,000
                1,700,000  Irvine Ranch Water District Rev.,
                              (Consolidated Bonds), VRDN,
                              3.10%, 3/3/99 (LOC:
                              Landesbank Hessen-Thuringen
                              Girozentrale)                         1,700,000
                3,400,000  Irvine Ranch Water District Rev.,
                              Series 1993 A, VRDN, 3.00%,
                              3/3/99 (LOC: Bank of America
                              N.T. & S.A.)                          3,400,000
               18,900,000  Kern County Superintendent of
                              Schools COP, Series 1996 A,
                              VRDN, 2.75%, 3/4/99 (LOC:
                              Anchor National Life Insurance
                              Company)                             18,900,000
                4,250,000  Lancaster Redevelopment Agency
                              Rev., Series 1996 C, (20th
                              Street Apartments), VRDN,
                              2.55%, 3/4/99 (LOC: FHLB)             4,250,000
                2,100,000  Lemore COP, (Golf Course),
                              VRDN, 3.30%, 3/4/99 (LOC:
                              Union Bank of California, N.A.)       2,100,000
                3,000,000  Loma Linda Water Rev., VRDN,
                              2.85%, 3/3/99 (LOC: Union
                              Bank of California, N.A.)             3,000,000
                4,680,000  Los Angeles Community
                              Redevelopment Agency Rev., 
                              VRDN, 2.60%, 3/4/99 (LOC:
                              Barclays Bank PLC)                    4,680,000
                2,000,000  Los Angeles Convention and
                              Exhibition Center Auth. COP,
                              Series 1989 A, 7.00%,
                              8/15/99, Prerefunded at
                              101.5% of Par(3)                      2,066,036

                                               See Notes to Financial Statements


8      1-800-345-2021


Cal. Tax-Free Money Market--Sch. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                     Value
- --------------------------------------------------------------------------------

             $  1,000,000  Los Angeles COP, (Municipal
                              Improvement Corp., Project H),
                              3.00%, 11/1/99 (AMBAC)             $  1,000,000
                1,000,000  Los Angeles County Metropolitan
                              Transportation Auth. Sales Tax
                              Rev., (Proposition A-2nd Tier),
                              5.50%, 7/1/99 (MBIA)                  1,008,291
                9,600,000  Los Angeles County Metropolitan
                              Transportation Auth. Sales Tax
                              Rev., Series 1993 A,
                              (Proposition C, Second Series),
                              VRDN, 2.60%, 3/4/99 (MBIA)
                              (SBBPA: Credit Locale de
                              France)                               9,600,000
                4,500,000  Los Angeles County Public Works
                              Financing Auth. Lease Rev.,
                              Floating Rate Trust Receipts,
                              Series 1998 A47, 3.35%,
                              3/1/99 (AMBAC) (Acquired
                              9/23/98--1/26/99, Cost
                              $4,500,000)(1)(2)                     4,500,000
               23,100,000  Los Angeles Multifamily Housing
                              Rev., Series 1985 K, VRDN,
                              2.40%, 3/2/99 (LOC: FHLB)            23,100,000
                3,000,000  Metropolitan Water District
                              Southern California Waterworks
                              Rev., Series 1998 C, VRDN,
                              2.40%, 3/4/99 (LOC: Bank of
                              America N.T. & S.A.)                  3,000,000
                1,835,000  Modesto Irrigation District COP, 
                              Series 1999 A,
                              4.25%, 7/1/99
                              (AMBAC)                               1,842,599
                2,000,000  Modesto Multifamily Housing Rev.,
                              Series 1996 A, (Shadowbrook), 
                              VRDN, 2.80%, 3/4/99 (LOC:
                              Bank of America N.T. & S.A.)          2,000,000
                2,025,000  Modesto Special Tax, (Community
                              Facilities District No. 98-1,
                              VRDN, 2.70%, 3/4/99 (LOC:
                              Wells Fargo Bank, N.A.)               2,025,000
                1,880,000  Moreno Valley COP, (City Hall
                              Refinancing), VRDN, 3.00%,
                              3/4/99 (LOC: Union Bank of
                              California, N.A.)                     1,880,000
                1,500,000  Oakland Economic Development
                              Rev., Series 1997 A, (Allen
                              Temple Family Life), VRDN,
                              2.60%, 3/4/99 (LOC: Wells
                              Fargo Bank, N.A.)                     1,500,000
               14,000,000  Oceanside Multifamily Housing
                              Rev., (Lakeridge Apartments), 
                              VRDN, 3.20%, 3/3/99 (LOC:
                              Continental Casualty Co.)            14,000,000
                8,380,000  Orange County Apartment
                              Development Rev., Series
                              1992 B, (Aliso Creek), VRDN,
                              3.00%, 3/4/99 (LOC: WFC
                              Holdings Corp.)                       8,380,000

Principal Amount                                                     Value
- --------------------------------------------------------------------------------

             $  5,000,000  Rancho Water District Financing
                              Auth. Rev., Series 1998 A,
                              VRDN, 2.60%, 3/3/99 (FGIC)
                              (SBBPA: General Electric
                              Capital Corp.)                     $  5,000,000
                9,445,000  Redlands COP, (Sewer Treatment
                              Facilities), VRDN, 2.55%, 
                              3/3/99 (FGIC) (SBBPA:
                              General Electric Capital Corp.)       9,445,000
                8,720,000  Redlands COP, (Water Treatment
                              Facilities), VRDN, 2.55%, 
                              3/3/99 (FGIC) (SBBPA:
                              General Electric Capital Corp.)       8,720,000
                2,500,000  Redwood City COP, (City Hall),
                              VRDN, 2.70%, 3/4/99 (LOC:
                              KBC Bank N.V.)                        2,500,000
                5,065,000  Rialto Public Financing Auth. Tax
                              Allocation, Series 1998 A, 
                              (Agua Mansa & Industrial), 
                              VRDN, 3.00%, 3/4/99 (LOC:
                              Union Bank of California, N.A.)       5,065,000
                3,580,000  Riverside County Asset Leasing
                              Corp. Leasehold Rev., Series
                              1989 A, (Riverside County
                              Hospital), 7.40%, 6/1/99,
                              Prerefunded at 102% of Par(3)         3,690,238
                3,420,000  Riverside County Multifamily
                              Housing Rev., (Ambergate
                              Apartments), VRDN, 2.55%,
                              3/4/99 (LOC: Union Bank of
                              California, N.A.)                     3,420,000
                4,500,000  Riverside County Teeter Notes
                              Commercial Paper, 3.10%,
                              4/7/99 (LOC: Westdeutsche
                              Landesbank Girozentrale)              4,500,000
                1,715,000  Rohnert Park Multifamily Housing
                              Rev., (Crossbrook Apartments),
                              VRDN, 2.60%, 3/3/99 (FNMA
                              Collateral Agreement)                 1,715,000
                5,920,000  Sacramento County Multifamily 
                              Housing Rev., (River
                              Oaks), VRDN, 2.70%, 3/4/99 (LOC:
                              Chase Manhattan Bank)                 5,920,000
                3,400,000  Sacramento County Multifamily
                              Housing Rev., Series 1996 A,
                              VRDN, 2.65%, 3/3/99 (LOC:
                              California State Teachers'
                              Retirement System)                    3,400,000
                2,000,000  San Bernardino County COP,
                              (Medical Center Financing),
                              VRDN, 2.50%, 3/3/99 (MBIA)
                              (SBBPA: Landesbank
                              Hessen-Thuringen Girozentrale)        2,000,000
               22,875,000  San Bernardino County COP,
                              VRDN, 2.75%, 3/4/99 (MBIA)
                              (SBBPA: Merrill Lynch & Co.,
                              Inc.) (Acquired 6/28/95--
                              2/4/98, Cost $22,875,000)(1)         22,875,000

See Notes to Financial Statements


                                                  www.americancentury.com      9


Cal. Tax-Free Money Market--Sch. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                     Value
- --------------------------------------------------------------------------------

            $  15,000,000  San Bernardino County Multifamily
                              Housing Auth. Rev., 5.45%,
                              5/1/99 (Put Agreement:
                              National Westminster Bank
                              PLC) (Acquired 5/8/98, Cost
                              $15,206,100)(1)                    $ 15,037,673
                3,350,000  San Bernardino County Multifamily
                              Housing Auth. Rev., Series
                              1992 A, (Arrowview Park
                              Apartments), VRDN, 2.55%,
                              3/4/99 (LOC: FHLB)                    3,350,000
                1,800,000  San Bernardino County Multifamily
                              Housing Auth. Rev., Series
                              1993 A, (Monterey Villas
                              Apartments), VRDN, 2.55%,
                              3/4/99 (LOC: FHLB)                    1,800,000
                2,800,000  San Bernardino County Multifamily
                              Housing Auth. Rev., Series
                              1997 A, (Mountain View),
                              VRDN, 2.55%, 3/4/99 (LOC:
                              FHLB)                                 2,800,000
                4,200,000  San Diego Multifamily Housing 
                              Rev., Series 1993 A,
                              (Coral Point Apartments), 
                              VRDN, 3.20%, 3/4/99 (LOC:
                              Continental Casualty Co.)             4,200,000
                5,000,000  San Francisco City and County
                              Redevelopment Agency
                              Multifamily Housing Rev., Series
                              1985 B, (Bayside Village),
                              VRDN, 2.40%, 3/4/99 (LOC:
                              Bank One Arizona, N.A.)               5,000,000
                3,285,000  San Francisco City and County
                              Redevelopment Financing Auth.
                              Rev., (Yerba Buena Garden),
                              VRDN, 2.55%, 3/3/99 (LOC:
                              National Westminster Bank
                              PLC)                                  3,285,000
                1,000,000  San Francisco City and County
                              Sewer Rev., 6.50%, 10/1/99,
                              Prerefunded at 102% of Par(3)         1,039,843
                2,400,000  San Francisco City and County
                              Unified School District Tax &
                              Rev. Anticipation Notes, 4.50%,
                              9/22/99                               2,414,437

Principal Amount                                                     Value
- --------------------------------------------------------------------------------

             $  2,945,000  San Jose Financing Auth. Rev.,
                              Series 1998 B, (Hayes Mansion
                              Improvement), VRDN, 2.55%,
                              3/3/99 (AMBAC) (SBBPA:
                              Bank of Nova Scotia)               $  2,945,000
               13,400,000  Santa Paula Public Financing
                              Auth. Lease Rev., (Water System
                              Acquisition), VRDN, 2.25%,
                              3/3/99 (LOC: California State
                              Teachers' Retirement System)         13,400,000
                2,575,000  Simi Valley Multifamily Housing
                              Rev., Series 1993 A, VRDN,
                              2.60%, 3/4/99 (LOC: FHLMC)            2,575,000
                5,000,000  South Coast Local Education
                              Agencies Tax & Rev. Anticipation
                              Notes, Series 1998 A, 4.50%,
                              6/30/99 (MBIA)                        5,020,882
                  525,000  South San Francisco COP,
                              (Quality Control Plant), VRDN,
                              2.55%, 3/4/99 (LOC: National
                              Westminster Bank PLC)                   525,000
                1,500,000  Triunfo Sanitation District Rev.,
                              VRDN, 2.20%, 3/3/99 (LOC:
                              Banque Nationale de Paris S.A.)       1,500,000
                1,900,000  West Hollywood COP, VRDN,
                              3.00%, 3/4/99 (LOC: Union
                              Bank of California, N.A.)             1,900,000
                4,500,000  Westminster COP, Series 1998 A,
                              (Civic Center), VRDN, 2.70%, 
                              3/4/99 (AMBAC) (SBBPA:
                              First Union National Bank)            4,500,000
                1,900,000  Westminster Redevelopment
                              Agency Tax Allocation Rev.,
                              (Commercial Redevelopment
                              Project No. 1), VRDN, 2.70%,
                              3/4/99 (AMBAC) (SBBPA:
                              Landesbank Hessen-Thuringen
                              Girozentrale)                         1,900,000
                                                                 ------------
TOTAL INVESTMENT SECURITIES--100.0%                              $449,727,000
                                                                 ============

                                               See Notes to Financial Statements


10      1-800-345-2021


Cal. Tax-Free Money Market--Sch. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

NOTES TO SCHEDULE OF INVESTMENTS

AMBAC = AMBAC Assurance Corporation

COP = Certificates of Participation

FGIC = Financial Guaranty Insurance Co.

FHLB = Federal Home Loan Bank

FHLMC = Federal Home Loan Mortgage Corp.

FNMA = Federal National Mortgage Association

FSA = Financial Security Assurance Inc.

GIC = Guaranteed Investment Contract

GO = General Obligation

LOC = Letter of Credit

MBIA = MBIA Insurance Corp.

SBBPA = Standby Bond Purchase Agreement

VRDN = Variable Rate Demand Note.  Interest  reset date is indicated and used in
calculating the weighted  average  portfolio  maturity.  Rate shown is effective
February 28, 1999.

(1)  Security was purchased  under Rule 144A of the Securities Act of 1933 or is
     a private  placement and, unless  registered under the Act or exempted from
     registration,  may only be sold to qualified institutional  investors.  The
     aggregate value of these  securities at February 28, 1999, was $79,614,673,
     which  represented  17.6%  of net  assets.  None of  these  securities  are
     considered to be illiquid.
(2)  Interest  reset date is  indicated  and used in  calculating  the  weighted
     average portfolio maturity. Rate shown is effective February 28, 1999.
(3)  Escrowed  to  maturity  in U.S.  government  securities  or state and local
     government securities.

- --------------------------------------------------------------------------------
UNDERSTANDING  THE  SCHEDULE  OF  INVESTMENTS--This  schedule  tells  you  which
investments your fund owned on the last day of the reporting period.

The schedule includes:

* a list of each investment

* the principal amount of each investment

* the amortized cost of each investment

See Notes to Financial Statements


                                                 www.americancentury.com      11


California Municipal Money Market--Performance
- --------------------------------------------------------------------------------

TOTAL RETURNS AS OF FEBRUARY 28, 1999

<TABLE>
                 CALIFORNIA MUNICIPAL   CALIFORNIA TAX-EXEMPT MONEY MARKET FUNDS(2)
                     MONEY MARKET          AVERAGE RETURN     FUND'S RANKING
<S>                 <C>                    <C>                   <C>                    
6 MONTHS(1)              1.35%                 1.19%                --
1 YEAR                   2.95%                 2.62%            5 OUT OF 55
=================================================================================
AVERAGE ANNUAL RETURNS
=================================================================================
3 YEARS                  3.08%                 2.82%            8 OUT OF 50
5 YEARS                  3.08%                 2.90%            7 OUT OF 43
LIFE OF FUND(3)          3.11%                 2.88%            6 OUT OF 35
</TABLE>

(1) Returns for periods less than one year are not annualized.

(2) According to Lipper Inc., an independent mutual fund ranking service.

(3) The fund's inception date was 12/31/90.

See pages 26-27 for more information about returns and Lipper fund rankings.

PORTFOLIO AT A GLANCE
                             2/28/99            8/31/98
NUMBER OF SECURITIES            59                58
WEIGHTED AVERAGE
   MATURITY                  15 DAYS            40 DAYS
EXPENSE RATIO                 0.50%*             0.50%

* Annualized.

YIELDS AS OF FEBRUARY 28, 1999

  7-DAY CURRENT YIELD           2.41%

  7-DAY EFFECTIVE YIELD         2.43%

  7-DAY TAX-EQUIVALENT YIELDS
    34.70% TAX BRACKET          3.69%
    37.42% TAX BRACKET          3.85%
    41.95% TAX BRACKET          4.15%
    45.22% TAX BRACKET          4.40%

Past performance does not guarantee future results.

Money market funds are neither  insured nor  guaranteed by the FDIC or any other
government agency.

Yields will fluctuate, and although the fund seeks to preserve the value of your
investment  at $1 per share,  it is possible to lose money by  investing  in the
fund. The 7-day yield more closely reflects  earnings of the fund than the total
return.


12      1-800-345-2021


California Municipal Money Market--Q&A
- --------------------------------------------------------------------------------

     An interview with Todd Pardula (pictured on page 5), a portfolio manager on
the California Tax-Free and Municipal funds investment team.

HOW DID  CALIFORNIA  MUNICIPAL  MONEY MARKET PERFORM DURING THE SIX MONTHS ENDED
FEBRUARY 28, 1999?

     The fund  performed  well,  producing  a  better  return  than the  average
California  tax-free  money  market  fund,  according to Lipper Inc. For the six
months, the portfolio's total return was 1.35%,  compared with the 1.19% average
return of the 55 "California  Tax-Exempt  Money Market Funds" tracked by Lipper.
California  Municipal Money Market's  longer-term returns are also quite strong,
consistently  placing in the top 20% of the Lipper group (see the Total  Returns
table on the previous page for additional fund performance comparisons.)

WHAT LED CALIFORNIA MUNICIPAL MONEY MARKET TO SUCH SOLID PERFORMANCE?

     A  major  reason  for  the  fund's  strong  relative  performance  was  our
lower-than-average management fee. Other things being equal, lower expenses mean
higher yields and returns for our shareholders.

     In addition,  California  Municipal Money Market  typically holds a greater
percentage of securities  subject to the federal  alternative  minimum tax (AMT)
than the other funds in the Lipper group. AMT securities  typically offer higher
yields than non-AMT notes because of their potential tax liability.

     Another reason we outperformed the Lipper group was our ability to purchase
the most attractively priced variable-rate notes, or "floaters." We work hard to
develop  excellent  relationships  with  dealers  that  offer the best  rates on
floaters.

     At the end of February,  floaters made up about 90% of the portfolio, so if
we can buy  floaters  with 10  additional  basis  points of yield (a basis point
equals  0.01%,  so 10 basis points  equals  0.10%),  we can get an extra 9 basis
points of performance for the fund. That's a significant edge when total returns
are in the 2% range.

YOUR  RELATIVE  PERFORMANCE  WAS STRONG,  BUT THE FUND'S TOTAL RETURN SEEMS LOW.
WHY?

     The  fund's  total  return is related to the  general  level of  short-term
interest  rates.  In the second  half of 1998,  the  Federal  Reserve  (the Fed)
lowered rates by 75 basis points  (0.75%)  because a series of global  financial
crises threatened U.S. economic growth.

     When interest rates are low,  municipalities  are inclined to lock in those
rates by issuing  more  long-term  bonds than  short-term  notes.  The supply of
short-term securities was also reduced by the excellent health of the California
economy,  which has diminished  municipal  borrowing needs.  While these factors
reduced supply,  demand for short-term tax-free securities surged. The imbalance
between supply and demand sent yields on tax-free money market funds in February
to their lowest levels since 1994.

[right margin]

"The fund performed well,  producing a better return than the average California
tax-free money market fund, according to Lipper Inc."

[pie charts - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

AS OF FEBRUARY 28, 1999
Variable-Rate Notes      89%
Put Bonds                11%

AS OF AUGUST 31, 1998
Variable-Rate Notes      79%
Put Bonds                15%
Bonds less than 1 Year    3%
Municipal Notes           3%

Security types are defined on page 27.


                                                 www.americancentury.com      13


California Municipal Money Market--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

YOU REDUCED THE PORTFOLIO'S  WEIGHTED  AVERAGE MATURITY FROM 40 DAYS TO 15 DAYS.
WHY?

     We allowed the average  maturity to shorten  because we didn't think yields
on one-year  municipal  securities were attractive enough to justify adding more
of  them  to the  portfolio.  Additionally,  it was  particularly  hard  to find
attractive  one-year AMT paper. As a result, we used any new money and cash from
maturing  securities  to buy  floaters  subject to AMT. We were  content to hold
floaters even in a declining interest rate environment because their yields were
virtually the same as those on one-year securities.

HOW DID YOU MANAGE THE FUND'S CREDIT QUALITY?

     We continued to be very conservative  regarding credit  decisions,  keeping
the fund  fully  invested  in  first-tier  municipal  money  market  securities.
First-tier obligations have generally received the highest credit rating from at
least two nationally recognized  statistical rating organizations.  For example,
the SP1 rating  category  (which  includes  SP1+) is Standard and Poor's highest
rating for  short-term  municipal  debt. The SP2 rated  securities  shown in the
chart at left are  considered  first tier because they received top ratings from
Fitch & Moody's, two other rating services.

     However, at the end of February, 14% of assets were in securities rated SP2
by Standard & Poor's. Those SP2 securities are primarily backed by Union Bank of
California,  whose majority owner is Bank of Tokyo  Mitsubishi.  We also believe
Union Bank of California is worthy of a higher S&P rating because its operations
are  governed  by  U.S.  banking   regulations  and  are  primarily  limited  to
California.  These  securities  offer an additional  40-50 basis points in yield
over securities rated SP1+ at what we believe is minimal additional credit risk

WHAT IS YOUR OUTLOOK FOR INTEREST RATES?

     The outlook for rates is uncertain.  On the one hand, it seems unlikely the
United  States  can  remain  an oasis of  prosperity  amid the  global  economic
slowdown.  That would  argue for further Fed  interest  rate cuts.  On the other
hand,  despite  global  turmoil,  the U.S.  economy has so far continued to grow
rapidly.  And although  inflation is dormant now, oil prices have  rebounded and
the  unemployment  rate remains very low.  Those  factors  would seem to suggest
interest rates could go higher.

AND WHAT'S YOUR OUTLOOK FOR THE FUND?

     We may increase the fund's average maturity in April and May, when seasonal
supply and demand factors  typically affect the tax-exempt money market.  That's
when many  shareholders  withdraw money from tax-free and municipal money market
funds to pay their  income  taxes.  Those  redemptions  mean less demand for and
greater  supply of tax-free money market  securities.  The net effect is often a
temporary  increase in yields on one-year  securities.  Despite  those  seasonal
factors,  yields and returns on tax-free money market funds are likely to remain
modest  as long as  inflation  is nearly  non-existent  and  interest  rates are
historically low.

[left margin]

"We continued to be very conservative  regarding credit  decisions,  keeping the
fund fully invested in first-tier municipal money market securities."

PORTFOLIO COMPOSITION BY CREDIT RATING
              % OF FUND INVESTMENTS
             AS OF             AS OF
            2/28/99           8/31/98
SP1+          72%               71%
SP1           14%               15%
SP2           14%               14%

Ratings provided by Standard & Poor's.  See Credit Rating  Guidelines on page 26
for more information.

"Yields and returns on tax-free  money market funds are likely to remain  modest
as long as inflation is nearly  non-existent and interest rates are historically
low."


14      1-800-345-2021


Cal. Municipal Money Market--Sch. of Investments
- --------------------------------------------------------------------------------

FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
SHORT-TERM MUNICIPAL SECURITIES
              $1,000,000   ABN Amro Munitops Certificates
                              Trust Receipts, Series 1998-17,
                              VRDN, 2.79%, 3/3/99 (FGIC)
                              (SBBPA: ABN Amro Bank N.V.)
                              (Acquired 11/18/98, Cost
                              $1,000,000)(1)                       $  1,000,000
               4,500,000   ABN Amro Munitops Certificates
                              Trust Receipts, Series 1998-10,
                              VRDN, 2.79%, 3/3/99 (FGIC)
                              (SBBPA: ABN Amro Bank N.V.)
                              (Acquired 8/19/98--1/6/99,
                              Cost $4,500,000)(1)                     4,500,000
               2,500,000   ABN Amro Munitops Certificates
                              Trust Receipts, Series 1998-25,
                              3.10%, 6/2/99 (FGIC)
                              (SBBPA: ABN Amro Bank N.V.)
                              (Acquired 12/2/98, Cost
                              $2,500,000)(1)                          2,500,000
               3,000,000   Alameda County Industrial
                              Development Auth. Rev., (Bat
                              Properties), VRDN, 2.60%,
                              3/4/99 (LOC: Wells Fargo
                              Bank, N.A.)                             3,000,000
               1,800,000   Alameda County Industrial
                              Development Auth. Rev., Series
                              1994 A, (Scientific Technology),
                              VRDN, 2.75%, 3/3/99 (LOC:
                              Banque Nationale de Paris
                              S.A.)                                   1,800,000
                 700,000   Alameda County Industrial
                              Development Auth. Rev., Series
                              1996 A, (Edward L. Shimmon
                              Inc.), VRDN, 2.80%, 3/4/99
                              (LOC: Banque Nationale de
                              Paris S.A.)                               700,000
               1,685,000   Alameda County Industrial
                              Development Auth. Rev., Series
                              1997 A, (Adeline Association),
                              VRDN, 2.80%, 3/4/99 (LOC:
                              Wells Fargo Bank, N.A.)                 1,685,000
               1,350,000   Alameda County Industrial
                              Development Auth. Rev., Series
                              1997 A, (Plyproperties), VRDN,
                              2.80%, 3/4/99 (LOC: Wells
                              Fargo Bank, N.A.)                       1,350,000
               2,200,000   Association of Bay Area
                              Governments  Multifamily 
                              Housing Rev., Series 1997
                              A, (Mountain View Apartments), 
                              VRDN, 2.95%, 3/4/99 (LOC:
                              Comerica Bank, N.A.)                    2,200,000
               2,000,000   California Economic Development
                              Financing Auth. Industrial
                              Development Rev., (Provena
                              Foods Inc.), VRDN, 2.75%,
                              3/3/99 (LOC: Comerica
                              Bank-CA)                                2,000,000

Principal Amount                                                       Value
- --------------------------------------------------------------------------------

              $3,100,000   California Health Facilities Auth.
                              Rev., (Episcopal Home), VRDN,
                              2.70%, 3/1/99 (LOC: Union
                              Bank of California, N.A.)            $  3,100,000
               6,100,000   California Housing Financing
                              Agency Rev., Series 1996 A,
                              Class A, VRDN, 2.77%,
                              3/4/99 (LOC: Caisse Des
                              Depots et Consignations)
                              (Acquired 2/4/98, Cost
                              $6,100,000)(1)                          6,100,000
                 900,000   California Housing Financing
                              Agency Rev., Series 1998 E,
                              3.55%, 3/12/99                            900,000
               2,500,000   California Pollution Control
                              Financing Auth. Rev., Series
                              1986 A, (Southern California
                              Edison), VRDN, 3.55%, 3/1/99
                              (Guaranteed: Southern
                              California Edison Company)              2,500,000
               1,200,000   California Pollution Control
                              Financing Auth. Rev., Series
                              1986 B, (Southern California
                              Edison), VRDN, 3.55%, 3/1/99
                              (Guaranteed: Southern
                              California Edison Company)              1,200,000
               2,800,000   California Pollution Control
                              Financing Auth. Rev., Series
                              1986 D, (Southern California
                              Edison), VRDN, 3.55%, 3/1/99
                              (Guaranteed: Southern
                              California Edison Company)              2,800,000
               7,000,000   California Pollution Control
                              Financing Auth. Solid Waste
                              Disposal Rev., Series 1994 A,
                              (Western Waste Industries),
                              VRDN, 2.90%, 3/4/99 (LOC:
                              Union Bank of California, N.A.)         7,000,000
               2,300,000   California Public Capital
                              Improvements Financing Auth.
                              Rev., Series 1988 C, 3.10%,
                              3/15/99 (LOC: National
                              Westminster Bank PLC)                   2,300,000
               6,100,000   California State Economic
                              Development Financing Auth.
                              Industrial Development Rev.,
                              (Applied Aerospace), VRDN,
                              2.75%, 3/3/99 (LOC:
                              American National Bank and
                              Trust Company of Chicago)               6,100,000
               1,200,000   California State Economic
                              Development Financing Auth.
                              Industrial Development Rev.,
                              (CALCO), VRDN, 3.05%,
                              3/3/99 (LOC: Wells Fargo
                              Bank, N.A.)                             1,200,000

See Notes to Financial Statements


                                                 www.americancentury.com      15


Cal. Municipal Money Market--Sch. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                       Value
- --------------------------------------------------------------------------------

              $3,750,000   California State Economic
                              Development Financing Auth.
                              Industrial Development Rev.,
                              (Coast Grain Co.), VRDN,
                              2.70%, 3/4/99 (LOC: Bank of
                              America N.T. & S.A.)                 $  3,750,000
               2,000,000   California State Economic
                              Development Financing Auth.
                              Industrial Development Rev.,
                              (River Ranch Fresh Foods),
                              VRDN, 2.70%, 3/4/99 (LOC:
                              NationsBank, N.A.)                      2,000,000
               2,400,000   California State Economic
                              Development Financing Auth.
                              Industrial Development Rev.,
                              (Scientific Specialties), VRDN,
                              2.75%, 3/3/99 (LOC: Bank of
                              America N.T. & S.A.)                    2,400,000
               3,040,000   California State Economic
                              Development Financing Auth.
                              Industrial Development Rev.,
                              (Vortech Engineering Inc.),
                              VRDN, 3.30%, 3/3/99 (LOC:
                              Bank of Hawaii)                         3,040,000
               1,468,364   California State Economic
                              Development Financing Auth.
                              Industrial Development Rev.,
                              (Wesflex Pipe Manufacturing),
                              VRDN, 2.95%, 3/4/99 (LOC:
                              Wells Fargo Bank, N.A.)                 1,468,364
               3,000,000   California State GO, Series 1997
                              BJ, 4.125%, 6/1/99                      3,000,176
               5,000,000   California State Veterans GO,
                              VRDN, 2.77%, 3/4/99 (FSA)
                              (SBBPA: Merrill Lynch & Co.,
                              Inc.) (Acquired 12/30/97, Cost
                              $5,000,000)(1)                          5,000,000
               1,000,000   California Statewide Communities
                              Development Auth. Industrial
                              Rev., Series 1998 C, (Nichols
                              Pistachio), VRDN, 2.70%,
                              3/4/99 (LOC: Bank of America
                              N.T. & S.A.)                            1,000,000
               8,500,000   California Statewide Communities
                              Development Auth. Lease Rev.,
                              Floating Rate Trust Receipts,
                              3.00%, 3/4/99 (LOC: Merrill
                              Lynch & Co., Inc.) (Acquired
                              2/16/99, Cost $8,500,000)(1)(2)         8,500,000
               5,900,000   California Statewide Communities
                              Development Auth. Multifamily
                              Housing Rev., Series 1997 A,
                              (Plaza Club Apartments), VRDN,
                              3.00%, 3/3/99 (LOC:
                              Comerica Bank, N.A.)                    5,900,000
               1,200,000   California Statewide Communities
                              Development Auth. Multifamily
                              Housing Rev., Series 1997 G,
                              (Sunrise of Moraga), VRDN,
                              2.85%, 3/4/99 (LOC:
                              Commerzbank A.G.)                       1,200,000
              $1,225,000   California Statewide Communities
                              Development Auth. Rev., Series
                              1996 G, (Lansmont Property),
                              VRDN, 2.70%, 3/3/99 (LOC:
                              Wells Fargo Bank, N.A.)              $  1,225,000
               1,600,000   California Statewide Communities
                              Development Corp. Rev., (Tri H
                              Foods), VRDN, 3.75%, 3/3/99
                              (LOC: Union Bank of California,
                              N.A.)                                   1,600,000
               5,560,000   California Statewide Communities
                              Development Corp. Rev., Series
                              1998 B, (DIX Metals), VRDN,
                              2.70%, 3/3/99 (LOC:
                              California State Teachers'
                              Retirement System)                      5,560,000
               3,465,000   Contra Costa County COP,
                              (Concord Healthcare  Center),  
                              VRDN, 2.35%, 3/3/99 (LOC:
                              NationsBank, N.A.)                      3,465,000
               1,600,000   Fowler Industrial Development
                              Auth. Rev., (Bee Sweet Citrus
                              Inc.), VRDN, 2.85%, 3/4/99
                              (LOC: Bank of America N.T. &
                              S.A.)                                   1,600,000
               1,700,000   Irvine Ranch Water District GO,
                              Series 1988 A, (Improvement
                              District No. 284), VRDN, 3.00%,
                              3/3/99 (LOC: Landesbank
                              Hessen-Thuringen Girozentrale)          1,700,000
               2,500,000   Kern County Superintendent of
                              Schools COP, Series 1996 A,
                              VRDN, 2.75%, 3/4/99 (LOC:
                              Anchor National Life Insurance
                              Company)                                2,500,000
               3,000,000   La Verne Industrial Development
                              Auth. Rev., Series 1998 A,
                              VRDN, 2.65%, 3/4/99 (LOC:
                              Fleet Bank, N.A.) (Acquired
                              12/21/98, Cost $3,000,000)(1)           3,000,000
               2,200,000   Lassen Municipal Utility District
                              Rev., Series 1996 A, VRDN, 3.00%, 
                              3/4/99 (FSA) (SBBPA:
                              Credit Local de France)                 2,200,000
               3,340,000   Los Angeles County Industrial
                              Development Auth. Rev., (Caitac
                              & Jae Co., Inc.), VRDN, 3.75%,
                              3/3/99 (LOC: Union Bank of
                              California, N.A.)                       3,340,000
               1,450,000   Los Angeles Industrial
                              Development Auth. Rev.,
                              (Firstclass Foods-Trojan), VRDN,
                              2.75%, 3/3/99 (LOC: California
                              State Teachers' Retirement
                              System)                                 1,450,000
               2,065,000   Los Angeles Industrial
                              Development Auth. Rev., (Kairak
                              Inc.), VRDN, 3.25%, 3/3/99
                              (LOC: Bank of Hawaii)                   2,065,000

                        See Notes to Financial Statements


16      1-800-345-2021


Cal. Municipal Money Market--Sch. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                       Value
- --------------------------------------------------------------------------------

              $1,260,000   Los Angeles Industrial
                              Development Auth. Rev.,
                              (Keystone Engineering
                              Company), VRDN, 3.25%,
                              3/3/99 (LOC: Bank of Hawaii)         $  1,260,000
               3,500,000   Los Angeles Multifamily Housing
                              Rev., Series 1997 D, (Mission
                              Village Terrace), VRDN, 2.70%,
                              3/4/99 (LOC: FHLB)                      3,500,000
               3,600,000   Oxnard Industrial Development
                              Auth. Rev., (Western Saw
                              Manufacturers), VRDN, 2.75%,
                              3/3/99 (LOC: California State
                              Teachers' Retirement System)            3,600,000
               2,500,000   Oxnard Industrial Development
                              Financing Auth. Rev., (Accurate
                              Engineering), VRDN, 2.75%,
                              3/3/99 (LOC: California State
                              Teachers' Retirement System)            2,500,000
               2,400,000   Pinole Redevelopment Agency,
                              Series 1998 A, (East Bluff
                              Apartments), VRDN, 2.95%,
                              3/4/99 (LOC: Comerica
                              Bank-CA)                                2,400,000
               2,565,000   Pleasant Hill Redevelopment
                              Agency Multifamily Housing
                              Rev., Series 1996 A,
                              (Chateau III), VRDN, 2.85%,
                              3/4/99 (LOC: Commerzbank
                              A.G.)                                   2,565,000
               3,000,000   Rialto Public Financing Auth. Tax 
                              Allocation, Series 1998 A, 
                              (Agua Mansa & Industrial), VRDN,
                              3.00%, 3/4/99 (LOC:
                              Union Bank of California, N.A.)         3,000,000
               2,205,000   Riverside County Industrial
                              Development Auth. Rev.,
                              (Merrick Engineering Inc.),
                              VRDN, 3.05%, 3/3/99 (LOC:
                              Wells Fargo Bank, N.A.)
                              (Acquired 3/14/97, Cost
                              $2,205,000)(1)                          2,205,000

Principal Amount                                                       Value
- --------------------------------------------------------------------------------

              $9,500,000   Sacramento County Housing
                              Auth. Rev., Issue 1992 A,
                              (Shadowood Apartments),
                              VRDN, 2.80%, 3/3/99 (LOC:
                              General Electric Capital Corp.)      $  9,500,000
               3,400,000   Sacramento County Multifamily
                              Housing Rev., Series 1996 A,
                              VRDN, 2.65%, 3/3/99 (LOC:
                              California State Teachers'
                              Retirement System)                      3,400,000
               2,500,000   Sacramento County Special
                              Facilities Airport Rev., (Cessna
                              Aircraft Co.), VRDN, 2.75%,
                              3/4/99 (LOC: Bank of America
                              N.T. & S.A.)                            2,500,000
               1,600,000   San Bernardino County Industrial
                              Development Auth. Rev., (Master
                              Halco Inc.), VRDN, 2.30%,
                              3/2/99 (LOC: California State
                              Teachers' Retirement System)            1,600,000
               9,840,000   San Bernardino County Single
                              Family Mortgage Rev., Series
                              1998 A, 4.00%, 5/1/99 (GIC:
                              Transamerica Life Insurance and
                              Annuity Company)                        9,840,000
                 900,000   San Diego Industrial Development 
                              Rev., Series 1987
                              A, (Kaiser Aerospace and Electricity), VRDN,
                              2.75%, 3/4/99 (LOC:
                              ABN Amro Bank N.V.)                       900,000
               2,800,000   San Francisco City & County
                              Airport Rev., (Community
                              International Airport, SGA 50),
                              VRDN, 2.85%, 3/3/99 (MBIA)
                              (SBBPA: Societe Generale)
                              (Acquired 7/8/97, Cost
                              $2,800,000)(1)                          2,800,000
               3,000,000   San Jose Multifamily Housing
                              Rev., Series 1998 A, (Carlton
                              Plaza), VRDN, 2.80%, 3/4/99
                              (LOC: Commerzbank A.G.)                 3,000,000
                                                                  --------------
TOTAL INVESTMENT SECURITIES--100.0%                                $175,468,540
                                                                  ==============

See Notes to Financial Statements


                                                 www.americancentury.com      17


Cal. Municipal Money Market--Sch. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)

FEBRUARY 28, 1999 (UNAUDITED)

NOTES TO SCHEDULE OF INVESTMENTS

COP = Certificates of Participation

FGIC = Financial Guaranty Insurance Co.

FHLB = Federal Home Loan Bank

FSA = Financial Security Assurance Inc.

GIC = Guaranteed Investment Contract

GO = General Obligation

LOC = Letter of Credit

MBIA = MBIA Insurance Corp.

SBBPA = Standby Bond Purchase Agreement

VRDN = Variable Rate Demand Note.  Interest  reset date is indicated and used in
calculating the weighted  average  portfolio  maturity.  Rate shown is effective
February 28, 1999.

(1)  Security was purchased  under Rule 144A of the Securities Act of 1933 or is
     a private  placement,  and unless registered under the Act or exempted from
     registration,  may only be sold to qualified institutional  investors.  The
     aggregate value of these  securities at February 28, 1999, was $35,605,000,
     which  represented  20.1%  of net  assets.  None of  these  securities  are
     considered to be illiquid.

(2)  Interest  reset date is  indicated  and used in  calculating  the  weighted
     average portfolio maturity. Rate shown is effective February 28, 1999.

- --------------------------------------------------------------------------------
UNDERSTANDING  THE  SCHEDULE  OF  INVESTMENTS--This  schedule  tells  you  which
investments your fund owned on the last day of the reporting period.

The schedule includes:

* a list of each investment

* the principal amount of each investment

* the amortized cost of each investment

                                               See Notes to Financial Statements


18      1-800-345-2021


Statements of Assets and Liabilities
- --------------------------------------------------------------------------------

FEBRUARY 28, 1999 (UNAUDITED)
                                                    TAX-FREE        MUNICIPAL
                                                  MONEY MARKET     MONEY MARKET
ASSETS
Investment securities, at value
  (amortized cost and cost
  for federal income tax purposes) .........    $ 449,727,000     $ 175,468,540
Cash .......................................          366,394         1,046,488
Interest receivable ........................        2,888,382           603,504
                                                -------------     -------------
                                                  452,981,776       177,118,532
                                                -------------     -------------

LIABILITIES
Disbursements in excess of
  demand deposit cash ......................          566,225              --
Payable for capital shares redeemed ........          120,137             8,238
Accrued management fees (Note 2) ...........          171,374            66,740
Payable for trustees' fees and expenses ....            1,046               407
Dividends payable ..........................           56,707            23,242
                                                -------------     -------------
                                                      915,489            98,627
                                                -------------     -------------
Net Assets .................................    $ 452,066,287     $ 177,019,905
                                                =============     =============

CAPITAL SHARES
Outstanding (unlimited number
  of shares authorized) ....................      452,066,287       177,056,747
                                                =============     =============
Net Asset Value Per Share ..................    $        1.00     $        1.00
                                                =============     =============

NET ASSETS CONSIST OF:
Capital paid in ............................    $ 452,066,287     $ 177,056,747
Undistributed net investment income ........          299,123           122,436
Accumulated net realized loss
  on investment transactions ...............         (299,123)         (159,278)
                                                -------------     -------------
                                                $ 452,066,287     $ 177,019,905
                                                =============     =============

- --------------------------------------------------------------------------------
UNDERSTANDING THE STATEMENTS OF ASSETS AND  LIABILITIES--This  statement details
what the fund owns (assets),  what it owes (liabilities),  and its net assets as
of the last day of the period.  If you subtract  what the fund owes from what it
owns, you get the fund's net assets.  The net assets divided by the total number
of fund shares  outstanding  gives you the price of an individual  share, or the
net asset value per share.

NET ASSETS are also broken down by capital (money invested by shareholders); net
investment income not yet paid to shareholders or net investment losses; and net
gains earned on investments  but not yet paid to  shareholders  or net losses on
investments  (known as realized gains or losses).  This breakdown  tells you the
value of net assets that are  performance-related,  such as investment  gains or
losses, and the value of net assets that are not related to performance, such as
shareholder investments and redemptions.

See Notes to Financial Statements


                                                 www.americancentury.com      19


Statements of Operations
- --------------------------------------------------------------------------------

FOR THE SIX MONTHS ENDED FEBRUARY 28, 1999 (UNAUDITED)

                                                     TAX-FREE         MUNICIPAL
                                                   MONEY MARKET     MONEY MARKET
INVESTMENT INCOME
Income:
Interest .................................         $7,037,083         $2,797,839
                                                   ----------         ----------
Expenses (Note 2):
Management fees ..........................          1,122,231            430,088
Trustees' fees and expenses ..............              7,605              3,554
                                                   ----------         ----------
                                                    1,129,836            433,642
                                                   ----------         ----------
Net investment income ....................         $5,907,247         $2,364,197
                                                   ==========         ==========

- --------------------------------------------------------------------------------
UNDERSTANDING THE STATEMENTS OF OPERATIONS--This  statement breaks down how each
fund's  net  assets  changed  during  the  period  as a  result  of  the  fund's
operations.  It tells you how much money the fund made or lost after taking into
account income,  fees and expenses,  and investment gains or losses. It does not
include shareholder transactions and distributions.

Fund OPERATIONS include:

* income earned from investments

* management fees and other expenses

                        See Notes to Financial Statements


20      1-800-345-2021


<TABLE>
<CAPTION>
Statements of Changes in Net Assets
- --------------------------------------------------------------------------------

SIX MONTHS ENDED FEBRUARY 28, 1999 (UNAUDITED) AND YEAR ENDED AUGUST 31, 1998

                                                  TAX-FREE                         MUNICIPAL
                                                MONEY MARKET                      MONEY MARKET
Increase (Decrease) in Net Assets         1999              1998             1999              1998

OPERATIONS
<S>                                   <C>              <C>              <C>              <C>          
Net investment income .............   $   5,907,247    $  13,370,351    $   2,364,197    $   5,404,285
Net realized loss on investments ..            --               (580)            --               (669)
                                      -------------    -------------    -------------    -------------
Net increase in net assets
  resulting from operations .......       5,907,247       13,369,771        2,364,197        5,403,616
                                      -------------    -------------    -------------    -------------

DISTRIBUTIONS TO SHAREHOLDERS
From net investment income ........      (5,907,244)     (13,369,357)      (2,364,200)      (5,398,614)
                                      -------------    -------------    -------------    -------------

CAPITAL SHARE TRANSACTIONS
Proceeds from shares sold .........     152,776,889      434,812,626       73,054,594      153,582,331
Proceeds from reinvestment
  of distributions ................       5,611,276       12,745,632        2,231,655        5,174,073
Payments for shares redeemed ......    (162,315,441)    (409,349,170)     (70,857,963)    (156,647,128)
                                      -------------    -------------    -------------    -------------
Net increase (decrease) in
  net assets from capital
  share transactions ..............      (3,927,276)      38,209,088        4,428,286        2,109,276
                                      -------------    -------------    -------------    -------------
Net increase (decrease)
  in net assets ...................      (3,927,273)      38,209,502        4,428,283        2,114,278

NET ASSETS
Beginning of period ...............     455,993,560      417,784,058      172,591,622      170,477,344
                                      -------------    -------------    -------------    -------------
End of period .....................   $ 452,066,287    $ 455,993,560    $ 177,019,905    $ 172,591,622
                                      =============    =============    =============    =============
Undistributed net investment
  income ..........................   $     299,123    $     299,086    $     122,436    $     122,436
                                      =============    =============    =============    =============

TRANSACTIONS IN SHARES OF THE FUNDS
Sold ..............................     152,776,889      434,812,626       73,054,594      153,582,331
Issued in reinvestment
  of distributions ................       5,611,276       12,745,632        2,231,655        5,174,073
Redeemed ..........................    (162,315,441)    (409,349,170)     (70,857,963)    (156,647,128)
                                      -------------    -------------    -------------    -------------
Net increase (decrease) ...........      (3,927,276)      38,209,088        4,428,286        2,109,276
                                      =============    =============    =============    =============
</TABLE>

- --------------------------------------------------------------------------------
UNDERSTANDING THE STATEMENTS OF CHANGES IN NET ASSETS--These statements show how
each fund's net assets changed over the past two reporting  periods.  It details
how much a fund grew or shrank as a result of:

* operations--a summary of the Statement of Operations from the previous page
  for the most recent period

* distributions--income distributed to shareholders

* share transactions--shareholders' purchases, reinvestments, and redemptions

Net  assets  at the  beginning  of  the  period  plus  the  sum  of  operations,
distributions  to  shareholders  and capital  share  transactions  result in net
assets at the end of the period.

See Notes to Financial Statements


                                                 www.americancentury.com      21


Notes to Financial Statements
- --------------------------------------------------------------------------------

FEBRUARY 28, 1999 (UNAUDITED)

1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     ORGANIZATION -- American  Century  California  Tax-Free and Municipal Funds
(the  trust)  is  registered  under  the  Investment  Company  Act of 1940 as an
open-end management  investment  company.  California Tax-Free Money Market Fund
(Tax-Free  Money Market) and California  Municipal  Money Market Fund (Municipal
Money  Market)  (the  funds)  are two of the seven  funds  issued by the  trust.
Tax-Free   Money  Market  is   diversified   and   Municipal   Money  Market  is
non-diversified  under the 1940 Act.  The funds seek  income that is exempt from
federal and California  income taxes.  Tax-Free Money Market and Municipal Money
Market seek to obtain as high a level of interest  income as is consistent  with
prudent  investment  management and conservation of shareholders'  capital.  The
funds  concentrate  their  investments  in a single state and therefore may have
more exposure to credit risk related to the state of California than a fund with
a broader geographical  diversification.  The following  significant  accounting
policies are in accordance with generally accepted accounting principles;  these
principles may require the use of estimates by fund management.

     SECURITY  VALUATIONS -- Portfolio  securities are valued at amortized cost,
which  approximates  current  market  value.  When  valuations  are not  readily
available,  securities are valued at fair value as determined in accordance with
procedures adopted by the Board of Trustees.

     SECURITY  TRANSACTIONS -- Security transactions are accounted for as of the
trade date. Net realized gains and losses are determined on the identified  cost
basis, which is also used for federal income tax purposes.

     INVESTMENT  INCOME -- Interest  income is recorded on the accrual basis and
includes accretion of discounts and amortization of premiums.

     INCOME  TAX  STATUS  -- It is the  funds'  policy  to  distribute  all  net
investment  income  and net  realized  gains to  shareholders  and to  otherwise
qualify as a regulated  investment  company under the provisions of the Internal
Revenue  Code.  Accordingly,  no  provision  has been made for  federal or state
income taxes.

     DISTRIBUTIONS TO SHAREHOLDERS  --Distributions  from net investment  income
are declared and credited daily and distributed monthly. The funds do not expect
to realize any long-term  capital gains, and  accordingly,  do not expect to pay
any capital gains distributions.

     At August 31, 1998,  accumulated  net realized  capital loss carryovers for
Tax-Free Money Market of approximately  $289,123 (expiring in 1999 through 2006)
and for  Municipal  Money  Market of  approximately  $159,278  (expiring in 2003
through 2006) may be used to offset future taxable gains.

     The  character of  distributions  made during the year from net  investment
income or net realized gains may differ from their ultimate characterization for
federal income tax purposes.  These differences  reflect the differing character
of certain income items and net capital gains and losses for financial statement
and tax  purposes  and may  result in  reclassification  among  certain  capital
accounts.

     ADDITIONAL  INFORMATION  -- Funds  Distributor,  Inc.  (FDI) is the trust's
distributor. Certain officers of FDI are also officers of the trust.


22      1-800-345-2021


Notes to Financial Statements
- --------------------------------------------------------------------------------

FEBRUARY 28, 1999 (UNAUDITED)

- --------------------------------------------------------------------------------
2. TRANSACTIONS WITH RELATED PARTIES

     The trust has entered into a Management  Agreement  with  American  Century
Investment  Management,  Inc.  (ACIM) that  provides  each fund with  investment
advisory and management  services in exchange for a single,  unified  management
fee.  Expenses  excluded from this  agreement are  brokerage,  taxes,  portfolio
insurance,  interest,  fees and expenses of the Trustees who are not  considered
"interested persons" as defined in the Investment Company Act of 1940 (including
counsel fees) and extraordinary  expenses.  The fee is calculated daily and paid
monthly.  It consists  of an  Investment  Category  Fee based on the average net
assets of the funds in a specific fund's  investment  category and a Complex Fee
based on the average net assets of all the funds managed by ACIM.  The rates for
the Investment  Category Fee range from 0.1570% to 0.2700% and the rates for the
Complex Fee range from 0.2900% to 0.3100%. For the six months ended February 28,
1999, the effective annual management fee for both funds was 0.50%.

     Certain  officers  and  Trustees  of the  trust  are also  officers  and/or
directors,  and,  as a  group,  controlling  stockholders  of  American  Century
Companies,  Inc., the parent of the trust's  investment  manager,  ACIM, and the
trust's transfer agent, American Century Services Corporation.

- --------------------------------------------------------------------------------
3. SUBSEQUENT EVENTS

   The following name changes became effective March 1, 1999:

              ==================================================================
               NEW NAME                  FORMER NAME
              ==================================================================
   FUND:       California Tax-Free       American Century - Benham California
               Money Market Fund         Tax-Free Money Market Fund

   FUND:       California Municipal      American Century - Benham California
               Money Market Fund         Municipal Money Market Fund


                                                 www.americancentury.com      23


<TABLE>
<CAPTION>
Cal. Tax-Free Money Market--Financial Highlights
- --------------------------------------------------------------------------------

FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED AUGUST 31 (EXCEPT AS NOTED)

                                     1999(1)               1998            1997            1996            1995            1994
PER-SHARE DATA
Net Asset Value,
<S>                              <C>                <C>             <C>             <C>             <C>             <C>        
Beginning of Period ..........   $      1.00        $      1.00     $      1.00     $      1.00     $      1.00     $      1.00
                                 -----------        -----------     -----------     -----------     -----------     -----------
Income From Investment
Operations
  Net Investment Income ......          0.01               0.03            0.03            0.03            0.03            0.02
                                 -----------        -----------     -----------     -----------     -----------     -----------
Distributions
  From Net Investment Income .         (0.01)             (0.03)          (0.03)          (0.03)          (0.03)          (0.02)
                                 -----------        -----------     -----------     -----------     -----------     -----------
Net Asset Value, End of Period   $      1.00        $      1.00     $      1.00     $      1.00     $      1.00     $      1.00
                                 ===========        ===========     ===========     ===========     ===========     ===========
  Total Return(2) ............          1.29%              3.12%           3.17%           3.12%           3.31%           2.09%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ........          0.50%(3)           0.50%           0.49%           0.49%           0.52%           0.50%
Ratio of Net Investment Income
to Average Net Assets ........          2.59%(3)           3.07%           3.10%           3.12%           3.28%           2.07%
Net Assets, End of Period
(in thousands) ...............   $   452,066        $   455,994     $   417,784     $   425,846     $   414,099     $   371,074
</TABLE>

(1) Six months ended February 28, 1999 (unaudited).

(2) Total  return   assumes   reinvestment   of  dividends   and  capital  gains
    distributions,  if any. Total returns for periods less than one year are not
    annualized.

(3) Annualized.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL  HIGHLIGHTS--This  statement itemizes current period
activity and  statistics and provides  comparison  data for the last five fiscal
years.

On a per-share basis, it includes:

* share price at the beginning of the period

* investment income

* income paid to shareholders

* share price at the end of the period

It also includes some key statistics for the period:

* total return--the overall percentage return of the fund, assuming reinvestment
  of all distributions

* expense ratio--operating expenses as a percentage of average net assets

* net income ratio--net investment income as a percentage of average net assets

                                               See Notes to Financial Statements


24      1-800-345-2021


<TABLE>
<CAPTION>
Cal. Municipal Money Market--Financial Highlights
- --------------------------------------------------------------------------------

FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED AUGUST 31 (EXCEPT AS NOTED)

                                     1999(1)               1998            1997            1996            1995            1994
PER-SHARE DATA
Net Asset Value,
<S>                              <C>                <C>             <C>             <C>             <C>             <C>        
Beginning of Period .............$      1.00        $      1.00     $      1.00     $      1.00     $      1.00     $      1.00
                                 -----------        -----------     -----------     -----------     -----------     -----------
Income From Investment
Operations
  Net Investment Income .........       0.01               0.03            0.03            0.03            0.03            0.02
                                 -----------        -----------     -----------     -----------     -----------     -----------
Distributions
  From Net Investment Income ....      (0.01)             (0.03)          (0.03)          (0.03)          (0.03)          (0.02)
                                 -----------        -----------     -----------     -----------     -----------     -----------
Net Asset Value, End of Period ..$      1.00        $      1.00     $      1.00     $      1.00     $      1.00     $      1.00
                                 ===========        ===========     ===========     ===========     ===========     ===========
  Total Return(2) ...............       1.35%              3.20%           3.15%           3.23%           3.35%           2.15%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ...........       0.50%(3)           0.50%           0.52%           0.53%           0.53%           0.51%
Ratio of Net Investment Income
to Average Net Assets ...........       2.71%(3)           3.16%           3.10%           3.20%           3.31%           2.13%
Net Assets, End of Period
(in thousands) ..................$   177,020        $   172,592     $   170,477     $   196,520     $   191,722     $   243,701
</TABLE>

(1) Six months ended February 28, 1999 (unaudited).

(2) Total  return   assumes   reinvestment   of  dividends   and  capital  gains
    distributions,  if any. Total returns for periods less than one year are not
    annualized.

(3) Annualized.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL  HIGHLIGHTS--This  statement itemizes current period
activity and  statistics and provides  comparison  data for the last five fiscal
years.

On a per-share basis, it includes:

* share price at the beginning of the period

* investment income

* income paid to shareholders

* share price at the end of the period

It also includes some key statistics for the period:

* total return--the overall percentage return of the fund, assuming reinvestment
  of all distributions

* expense ratio--operating expenses as a percentage of average net assets

* net income ratio--net investment income as a percentage of average net assets

See Notes to Financial Statements


                                                 www.americancentury.com      25


Background Information
- --------------------------------------------------------------------------------

INVESTMENT PHILOSOPHY AND POLICIES

     American  Century offers 38 fixed-income  funds,  ranging from money market
portfolios  to long-term  bond funds and including  both taxable and  tax-exempt
funds.  Each is  managed to  provide a "pure  play" on a specific  sector of the
fixed-income market. To ensure adherence to this principle,  the basic structure
of each portfolio is tied to a specific market index.  Fund managers  attempt to
add value by making  modest  portfolio  adjustments  based on their  analysis of
prevailing market conditions. Investment decisions are made by management teams,
which meet regularly to discuss market analysis and investment strategies.

     In addition to these principles, each fund has its own investment policies:

     CALIFORNIA TAX-FREE MONEY MARKET and CALIFORNIA MUNICIPAL MONEY MARKET seek
to provide  interest income exempt from both federal and California state income
taxes while  maintaining a stable share price.  The funds invest in high-quality
California  municipal money market  securities  with remaining  maturities of 13
months or less.

     An investment in these funds is neither  insured nor guaranteed by the FDIC
or any other government  agency.  Yields will fluctuate,  and although the funds
seek to preserve the value of your investment at $1 per share, it is possible to
lose money by investing in the funds.

LIPPER RANKINGS

     LIPPER INC. is an independent mutual fund ranking service that groups funds
according to their investment objectives. Rankings are based on average annual
returns for each fund in a given category for the periods indicated. Rankings
are not included for periods less than one year.

     The Lipper category for the California  Tax-Free Money Market and Municipal
Money Market is:

     CALIFORNIA   TAX-EXEMPT   MONEY  MARKET   FUNDS   --funds  that  invest  in
high-quality  California  municipal  obligations  with  dollar-weighted  average
maturities of less than 90 days.

CREDIT RATING GUIDELINES

     Credit  quality (the  issuer's  financial  strength and the  likelihood  of
timely  payment of  interest  and  principal)  is a key  factor in  fixed-income
investment  analysis.  Credit ratings issued by independent  rating and research
companies such as Standard & Poor's help quantify credit  quality--the  stronger
the issuer,  the higher the credit rating.  In turn,  credit quality and ratings
greatly  influence bond prices and  yields--high  ratings mean higher prices and
less current income (yield) as compensation for risk.

     But credit ratings are subjective.  They reflect the opinions of the rating
agencies that issue them and are not absolute standards of quality. Furthermore,
high credit ratings do not guarantee good  investment  performance.  They do not
reflect the price  stability  of a municipal  security  when  economic or market
conditions change.

[left margin]

INVESTMENT TEAM LEADERS

  PORTFOLIO MANAGER
     TODD PARDULA

  CREDIT RESEARCH MANAGER
     STEVEN PERMUT


26      1-800-345-2021


Glossary
- --------------------------------------------------------------------------------

RETURNS

* TOTAL  RETURN  figures  show the overall  percentage  change in the value of a
hypothetical  investment  in  the  fund  and  assume  that  all  of  the  fund's
distributions are reinvested.

* AVERAGE ANNUAL RETURNS  illustrate the annually  compounded returns that would
have produced the fund's cumulative total returns if the fund's  performance had
been  constant  over the  entire  period.  Average  annual  returns  smooth  out
variations  in a fund's  return;  they are not the same as  fiscal  year-by-year
results.  For  fiscal  year-by-year  returns,  please  refer  to the  "Financial
Highlights" on pages 24-25.

YIELDS

* 7-DAY  CURRENT  YIELD  is  calculated  based  on the  income  generated  by an
investment  in the fund over a seven-day  period and is  expressed  as an annual
percentage rate.

* 7-DAY  EFFECTIVE  YIELD is  calculated  similarly,  although  this  figure  is
slightly  higher than the fund's 7-Day  Current  Yield because of the effects of
compounding.  The 7-Day  Effective  Yield  assumes  that income  earned from the
fund's investments is reinvested and generating additional income.

* 7-DAY  TAX-EQUIVALENT  YIELDS show the  taxable  yields  that  investors  in a
combined  California  and federal  income tax bracket  would have to earn before
taxes to equal the fund's 7-Day Current Yield.

INVESTMENT TERMS

* BASIS POINT--a basis point equals one  one-hundredth of a percentage point (or
0.01%). Therefore, 100 basis points equal one percentage point (or 1%).

STATISTICAL TERMINOLOGY

* NUMBER OF SECURITIES--the  number of entities that issued securities held by a
fund on a given date.

*  WEIGHTED  AVERAGE   MATURITY   (WAM)--a  measure  of  the  sensitivity  of  a
fixed-income  portfolio to interest rate changes. WAM indicates the average time
until the securities in the portfolio mature, weighted by dollar amount.

* EXPENSE RATIO--the  operating expenses of the fund,  expressed as a percentage
of average net assets.  Shareholders pay an annual fee to the investment manager
for  investment  advisory  and  management  services.  The expenses and fees are
deducted from fund income, not from each shareholder account. (See Note 2 in the
Notes to Financial Statements.)

TYPES OF MUNICIPAL SECURITIES

* AMT PAPER--instruments  with income subject to the federal alternative minimum
tax.

* MUNICIPAL COMMERCIAL PAPER (CP)--high-grade  short-term securities backed by a
line of credit from a bank.

* MUNICIPAL NOTES--securities with maturities of two years or less.

* PUT  BONDS--long-term  securities  that can be "put back" (i.e.,  sold at face
value) to a specified buyer at a prearranged date.

* VARIABLE-RATE NOTES--securities that track market interest rates and stabilize
their market values using periodic (daily or weekly) interest rate adjustments.


                                                 www.americancentury.com      27


Glossary
- --------------------------------------------------------------------------------
                                                                    (Continued)

FUND CLASSIFICATIONS

INVESTMENT OBJECTIVE

The investment  objective may be based on the fund's  objective as stated in its
prospectus or fund profile,  or the fund's  categorization by independent rating
organizations based on its management style.

* CAPITAL  PRESERVATION--Offers  taxable and  tax-free  money  market  funds for
relative  stability of  principal  and  liquidity,  allowing  maximum  portfolio
diversification.

* INCOME--Offers  funds that can provide current income and competitive  yields,
as well as a strong and stable  foundation and generally lower volatility levels
than stock funds.

*  GROWTH  &  INCOME--Offers  funds  that  emphasize  both  growth  and  income,
diversification,  varying  capitalization sizes, and different investment styles
and strategies.

*  GROWTH--Offers  funds  with a focus on  capital  appreciation  and  long-term
growth,  generally providing high return potential with corresponding high price
fluctuation risk.

RISK

The classification of funds by risk category is based on quantitative historical
measures as well as qualitative prospective measures. It is not intended to be a
precise  indicator  of future risk or return  levels.  The degree of risk within
each category can vary  significantly,  and some fund returns have  historically
been higher than more aggressive  funds or lower than more  conservative  funds.
Please be aware that the fund's category may change over time. Therefore,  it is
important  that you read a fund's  prospectus or fund profile  carefully  before
investing to ensure its  objectives,  policies and risk potential are consistent
with your needs.

* CONSERVATIVE--these funds generally provide lower return potential with either
low or minimal price fluctuation risk.

* MODERATE--  these funds  generally  provide  moderate  return  potential  with
moderate price fluctuation risk.

*  AGGRESSIVE--  these  funds  generally  provide  high  return  potential  with
corresponding high price fluctuation risk.


28      1-800-345-2021


[inside back cover]

===============================================================================
INVESTMENT OBJECTIVE - CAPITAL PRESERVATION
===============================================================================

                  RISK LEVEL - CONSERVATIVE

TAXABLE MONEY MARKETS           TAX-FREE MONEY MARKETS

Premium  Capital Reserve        FL Municipal Money Market
Prime Money Market              CA Municipal Money Market
Premium Government Reserve      CA Tax-Free Money Market
Government Agency               Tax-Free Money Market
   Money Market
Capital Preservation

===============================================================================
INVESTMENT OBJECTIVE - INCOME
===============================================================================

                   RISK LEVEL - AGGRESSIVE

TAXABLE BONDS                   TAX-FREE BONDS

Target 2025*                    CA High-Yield Municipal
Target 2020*                    High-Yield Municipal
Target 2015*
Target 2010*
High-Yield
International Bond

                    RISK LEVEL - MODERATE

TAXABLE BONDS                   TAX-FREE BONDS

Long-Term Treasury              CA Long-Term Tax-Free
Target 2005*                    Long-Term Tax-Free
Bond                            CA Insured Tax-Free
Premium Bond

                   RISK LEVEL - CONSERVATIVE

TAXABLE BONDS                   TAX-FREE BONDS

Intermediate-Term Bond          CA Intermediate-Term Tax-Free
Intermediate-Term Treasury      AZ Intermediate-Term Municipal
GNMA                            FL Intermediate-Term Municipal
Inflation-Adjusted Treasury     Intermediate-Term  Tax-Free
Limited-Term Bond               CA Limited-Term  Tax-Free
Target 2000*                    Limited-Term Tax-Free
Short-Term Government
Short-Term Treasury

===============================================================================
INVESTMENT OBJECTIVE - GROWTH AND INCOME
===============================================================================

                     RISK LEVEL - AGGRESSIVE

DOMESTIC EQUITY

Small Cap Quantitative
Small Cap Value

                      RISK LEVEL - MODERATE

ASSET ALLOCATION/BALANCED       DOMESTIC EQUITY        SPECIALTY

Strategic Allocation --         Equity Growth          Utilities
   Aggressive                   Equity Index           Real Estate
Balanced                        Tax-Managed Value
Strategic Allocation --         Income & Growth
   Moderate                     Value
Strategic Allocation --         Equity Income
   Conservative

===============================================================================
INVESTMENT OBJECTIVE - GROWTH
===============================================================================

                      RISK LEVEL - AGGRESSIVE

DOMESTIC EQUITY                 SPECIALTY              INTERNATIONAL

New Opportunities               Global Gold            Emerging Markets
Giftrust(reg.tm)                                       International Discovery
Vista                                                  International Growth
Heritage                                               Global Growth
Growth
Ultra
Select

                       RISK LEVEL - MODERATE

SPECIALTY

Global Natural Resources


The investment  objective may be based on the fund's  objective as stated in its
prospectus or fund profile,  or the fund's  categorization by independent rating
organizations based on its management style.

The classification of funds by risk category is based on quantitative historical
measures as well as qualitative prospective measures. It is not intended to be a
precise  indicator  of future risk or return  levels.  The degree of risk within
each category can vary  significantly,  and some fund returns have  historically
been higher than more aggressive  funds or lower than more  conservative  funds.
Please be aware that a fund's  category may change over time.  Therefore,  it is
important  that you read a fund's  prospectus or fund profile  carefully  before
investing to ensure its  objectives,  policies and risk potential are consistent
with your needs.

For a definition of fund categories, see the Glossary.

*  While listed within the Income investment objective,  the Target funds do not
   pay current dividend income.  Income dividends are distributed once a year in
   December. The Target funds are listed in all three risk categories due to the
   dramatic  price  volatility  investors may  experience  during certain market
   conditions.  If held  to  their  target  dates,  however,  they  can  offer a
   conservative, dependable way to invest for a specific time horizon.

Please call for a prospectus  or profile on any  American  Century  fund.  These
documents contain important information including charges and expenses,  and you
should read them carefully before you invest or send money.


[back cover]

[american century logo(reg.sm)]
American
Century

P.O. BOX 419200
KANSAS CITY, MISSOURI 64141-6200

WWW.AMERICANCENTURY.COM

INVESTOR RELATIONS
1-800-345-2021 OR 816-531-5575

AUTOMATED INFORMATION LINE
1-800-345-8765

FAX: 816-340-7962

TELECOMMUNICATIONS DEVICE FOR THE DEAF
1-800-634-4113 OR 816-444-3485

BUSINESS, NOT-FOR-PROFIT, EMPLOYER-SPONSORED RETIREMENT PLANS
1-800-345-3533

AMERICAN CENTURY CALIFORNIA TAX-FREE AND MUNICIPAL FUNDS

INVESTMENT MANAGER
AMERICAN CENTURY INVESTMENT MANAGEMENT, INC.
KANSAS CITY, MISSOURI

THIS REPORT AND THE STATEMENTS IT CONTAINS ARE SUBMITTED FOR THE GENERAL
INFORMATION OF OUR SHAREHOLDERS. THE REPORT IS NOT AUTHORIZED FOR DISTRIBUTION
TO PROSPECTIVE INVESTORS UNLESS PRECEDED OR ACCOMPANIED BY AN EFFECTIVE
PROSPECTUS.


American Century Investments                                      BULK RATE
P.O. Box 419200                                               U.S. POSTAGE PAID
Kansas City, MO 64141-6200                                    AMERICAN CENTURY
www.americancentury.com                                           COMPANIES

9904                                                    Funds Distributor, Inc.
SH-BKT-15978                      (c)1999 American Century Services Corporation
<PAGE>
[front cover]
                                                              FEBRUARY 28, 1999

SEMIANNUAL REPORT
- -----------------
AMERICAN CENTURY

[graphic of stairs]

AMERICAN CENTURY
- ---------------------------------
CALIFORNIA LIMITED-TERM TAX-FREE
CALIFORNIA INTERMEDIATE-TERM TAX-FREE
CALIFORNIA LONG-TERM TAX-FREE

                                                 [american century logo(reg.sm)]
                                                                        American
                                                                         Century


[inside front cover]

AMERICAN CENTURY KEEPS WITH TRADITION
- --------------------------------------------------------------------------------

FOLLOWING BENHAM'S FOOTSTEPS

On March 1, we made it easier for you to do business with us. We simplified  our
organizational  structure by  eliminating  the  venerable  Benham and  Twentieth
Century names, and putting all our funds under American Century. The name change
will not affect your funds' investment  management--the proven Benham investment
philosophy, experienced portfolio management teams, and legacy of innovation and
high-quality performance remain.

CONSISTENT,  SOLID  PERFORMANCE--We'll  continue  to  adhere  to the  investment
practices  that have  helped  our  fixed-income  funds  perform so well over the
years. In 1998,  two-thirds of American Century bond funds beat their peer group
average, according to Lipper, Inc.

CONSISTENT  INVESTMENT  PHILOSOPHY--American  Century  fixed-income  funds  will
continue to offer a "pure play" on their sector of the market, as they did under
Benham.

CONTINUITY  OF THE  MANAGEMENT  TEAM--The  investment  process  is not all  that
remains  the same;  we've  retained  our core team of  experienced  fixed-income
portfolio managers.

    *  Experience--The  more than 35 fixed-income  investment  professionals  at
       American  Century have an average of nine years of investment  management
       experience.

    *  Bigger and better--Since  American Century was formed,  we've doubled the
       size  of the  original  Benham  management  team  in our  Mountain  View,
       California office.

TRADITION OF INNOVATION--Like  Benham before it, American Century is a leader in
fixed-income  fund  innovation.  For example,  we introduced a total of four new
fixed-income  funds  in the  last  three  years,  including  the  first  no-load
inflation-adjusted bond fund.

We continue to run our fixed-income operation from our offices in Mountain View,
California, which is also home to our walk-in Investor Center.

We look forward to continuing to meet your fixed-income  investment needs in the
Benham tradition.

WHAT'S NEW . . .

     We now classify our funds in easy-to-remember categories based on objective
and risk. The four  objective  categories  are:  CAPITAL  PRESERVATION,  INCOME,
GROWTH AND INCOME,  and GROWTH.  The three risk  categories  are:  CONSERVATIVE,
MODERATE,  and AGGRESSIVE.  This new  classification  system makes it easier for
investors to identify which funds are right for them.

     Turn to the  inside  back  cover of this  report to see a list of the funds
classified by objective and risk. For  definitions of the fund  categories,  see
the Glossary.

Past performance is no guarantee of future results.

[left margin]

CALIFORNIA LIMITED-TERM TAX-FREE
(BCSTX)
- --------------------------------------

CALIFORNIA INTERMEDIATE-TERM TAX-FREE
(BCITX)
- --------------------------------------

CALIFORNIA LONG-TERM TAX-FREE
(BCLTX)
- --------------------------------------


Our Message to You
- --------------------------------------------------------------------------------
/photo of James E. Stowers III and James E. Stowers, Jr./
James E. Stowers III, seated, with James E. Stowers, Jr.

     During the six-month period ended February 28, 1999, the financial  markets
experienced  a dramatic  shift in  expectations.  Six months ago,  the  economic
outlook appeared grim--financial problems in Asia, Russia, and Latin America led
to expectations of an impending U.S. economic  slowdown.  That sent the domestic
stock market reeling and pushed U.S. bond yields to record lows.

     But expectations began to change in the fourth quarter of 1998. The Federal
Reserve cut interest  rates three times in six weeks,  bolstering  confidence in
the economy.  That, in turn, brought greater stability to U.S. financial markets
and eventually produced a stock market rebound.

     By early 1999,  reports of the strongest  quarterly  economic  surge in two
years caught  investors by surprise.  Bond yields rose  reflexively  amid higher
inflation  expectations,  but productivity gains and competitive  pressures kept
inflation at its lowest level in a dozen years.

     The resiliency of California's economy was especially surprising. With many
Asian  economies--including  six of the state's ten biggest export markets--at a
standstill,  there were  concerns that the economic  stagnation  would spread to
California.  However,  the state's  economy  hardly  missed a beat and is now as
healthy as it has been in a decade.

     This economic environment has been positive for California municipal bonds.
All seven of American Century's  California  municipal funds, ranging from money
market funds to long-term  and  high-yield  bond funds,  produced  above-average
returns  during  the  past  six  months,  as well as over  longer  time  periods
(according to Lipper Inc.).  We've been  investing in the  California  municipal
market for more than 15 years, and the consistent  performance of our California
funds reflects that experience.

     At American  Century,  we've  recently  made some changes that we hope will
make it easier  for you to  identify  and  select  the funds that best meet your
investment  needs.  We  reorganized  our family of 71 funds based on  investment
goals and risk level (see the front and back  inside  covers of this  report for
more details).

     In  addition,  California  municipal  fund  shareholders  were the first to
receive  our  new  simplified  prospectus.   This  document  provides  the  fund
information  you need in clear and  straightforward  language,  and it  includes
helpful tips and definitions of investment terms.

     We want your  experience  with  American  Century to be  rewarding,  and we
appreciate your continued confidence in us.

Sincerely,

/s/James E. Stowers, Jr.                 /s/James E. Stowers III
James E. Stowers, Jr.                    James E. Stowers III
Chairman of the Board and Founder        Chief Executive Officer

[right margin]

                 Table of Contents
   Report Highlights ......................................................    2
   Market Perspective .....................................................    3
CALIFORNIA LIMITED-TERM TAX-FREE
   Performance Information ................................................    4
   Management Q&A .........................................................    5
   Portfolio at a Glance ..................................................    5
   Schedule of Investments ................................................    8
CALIFORNIA INTERMEDIATE-TERM TAX-FREE
   Performance Information ................................................   12
   Management Q&A .........................................................   13
   Portfolio at a Glance ..................................................   13
   Schedule of Investments ................................................   16
CALIFORNIA LONG-TERM TAX-FREE
   Performance Information ................................................   22
   Management Q&A .........................................................   23
   Portfolio at a Glance ..................................................   23
   Schedule of Investments ................................................   26
FINANCIAL STATEMENTS
   Statements of Assets and
      Liabilities .........................................................   30
   Statements of Operations ...............................................   31
   Statements of Changes
      in Net Assets .......................................................   32
   Notes to Financial
      Statements ..........................................................   33
   Financial Highlights ...................................................   36
OTHER INFORMATION
   Background Information
      Investment Philosophy
         and Policies .....................................................   39
      Comparative Indices .................................................   39
      Lipper Rankings .....................................................   39
      Investment Team
         Leaders ..........................................................   39
      Credit Rating
         Guidelines .......................................................   39
   Glossary ...............................................................   40


                                                  www.americancentury.com      1


Report Highlights
- --------------------------------------------------------------------------------

MARKET PERSPECTIVE

*   Municipal bonds posted modestly positive returns during the six months ended
    February 28, 1999.

*   Short- and intermediate-term  municipal bonds produced modest price gains as
    their yields fell slightly.  They outperformed  long-term municipals,  whose
    yields rose a little.

*   Bond  yields  fell and  prices  rose in the  fourth  quarter  of 1998 as the
    Federal Reserve cut short-term  interest rates three times,  but yields rose
    in early 1999 as the U.S. economy surged.

*   Municipal bonds outperformed  Treasury securities thanks to improving supply
    and  demand  conditions.  However,  municipal  yields  are still  attractive
    relative to Treasury yields.

CALIFORNIA LIMITED-TERM TAX-FREE

*   The fund outperformed the average California  short-intermediate  fund while
    offering a significantly higher yield.

*   A longer-than-average  duration and the addition of several higher-yielding,
    out-of-favor bonds helped boost fund performance.

*   The  credit  quality of the  portfolio  improved  as we  reduced  the fund's
    exposure to lower-rated bonds.

*   The healthy economic  environment in California is favorable for the state's
    municipal  bonds,  so we expect to maintain our longer  duration and current
    positioning.

CALIFORNIA INTERMEDIATE-TERM  TAX-FREE

*   The  fund  outperformed  the  average  California  intermediate  fund  while
    offering an attractive yield.

*   We lengthened the fund's duration by buying  long-term Puerto Rico municipal
    bonds, which provide tax-exempt income in all states.

*   We added yield to the  portfolio by taking  advantage of  differences  among
    short-term municipal bonds.

*   The  portfolio's  credit quality  remained high,  reflecting our belief that
    higher-quality bonds will outperform lower-rated bonds going forward.

*   We're  optimistic  about the outlook for longer-term  municipal bonds, so we
    plan to maintain the fund's longer duration in the coming months.

CALIFORNIA LONG-TERM TAX-FREE

*   The fund  outperformed  the  average  California  municipal  debt fund while
    offering a higher yield.

*   Because of our  expectations  for lower interest rates,  the portfolio had a
    longer-than-average  duration  and  focused on  discount  bonds  (bonds with
    lower-than-prevailing interest rates).

*   We invested mainly in high-quality bonds because we were getting very little
    extra yield for lower- quality bonds.

*   Market  conditions  remain  favorable  for  municipal  bonds,  so we plan to
    maintain the fund's current positioning going forward.

[left margin]

           CALIFORNIA LIMITED-TERM
              TAX-FREE (BCSTX)
TOTAL RETURNS:               AS OF 2/28/99
    6 Months                        2.27%*
    1 Year                           4.86%
NET ASSETS:                 $151.0 million
30-DAY SEC YIELD:                    3.03%
INCEPTION DATE:                     6/1/92

        CALIFORNIA INTERMEDIATE-TERM
              TAX-FREE  (BCITX)
TOTAL RETURNS:               AS OF 2/28/99
    6 Months                        2.51%*
    1 Year                           5.46%
NET ASSETS:                 $490.1 million
30-DAY SEC YIELD:                    3.46%
INCEPTION DATE:                    11/9/83

             CALIFORNIA LONG-TERM
              TAX-FREE  (BCLTX)
TOTAL RETURNS:               AS OF 2/28/99
    6 Months                        2.20%*
    1 Year                           6.17%
NET ASSETS:                 $348.1 million
30-DAY SEC YIELD:                    4.17%
INCEPTION DATE:                    11/9/83

* Not annualized.

See Total  Returns on pages 4, 12, and 22.  Investment  terms are defined in the
Glossary on pages 40-41.


2      1-800-345-2021


Market Perspective from Randall W. Merk
- --------------------------------------------------------------------------------
/photo of Randall W. Merk/
Randall W. Merk, chief investment officer of fixed income

MUNICIPAL BOND PERFORMANCE

     Amid several  powerful  shifts in market  sentiment,  municipal  securities
posted modestly  positive returns during the six months ended February 28, 1999.
Their performance was primarily  dictated by changing interest rates. Rates fell
in September  and October but crept higher  during much of the  remainder of the
period.

     Short-  and  intermediate-term   municipal  bonds  outperformed   long-term
municipals  during  the  period  (see  the  accompanying   table).   Short-  and
intermediate-term yields fell slightly overall,  producing modest price gains in
these sectors of the market.  In contrast,  long-term  municipal yields actually
rose a little.

STRONGER-THAN-EXPECTED  ECONOMIC CONDITIONS

     Despite initial fears to the contrary,  the U.S. economy  continued to grow
at a healthy pace during the past six months.  At the start of the period,  bond
investors were  optimistic  because they felt that the Federal Reserve (the Fed)
would need to lower interest rates to stimulate U.S.  economic growth and combat
a slowing global economy.  Those  expectations,  and the three Fed interest rate
cuts  that  followed,   supported  a  bond  market  rally  that  lasted  through
mid-October.

     By November,  however,  the factors that had driven the bond rally began to
unwind.  The Fed's actions helped  restore  confidence in the U.S. stock market,
and investors  began to gravitate away from bonds. In early 1999, bond investors
worried that the U.S. economy's impressive  growth--which climbed to a 6% annual
rate during the final three months of  1998--could  ignite  inflation and prompt
the Fed to reverse course.

MUNICIPALS GAIN GROUND

     In 1998, municipal bonds underperformed  Treasury bonds,  primarily because
of supply and demand  factors.  In the  municipal  market,  demand was sporadic,
while supply  increased as many issuers took  advantage of the low interest rate
environment.  In contrast,  Treasurys benefited from strong demand amid a global
flight to safety,  and supply shrank as the federal budget  surplus  reduced the
government's borrowing needs. By October,  municipal and Treasury yields were as
tight as they had been in a decade (see the chart at right).

     In the first two months of this year, however,  the tide turned in favor of
municipal  bonds,  thanks to  diminished  supply and firmer  demand.  Meanwhile,
flight-to-quality  demand in the  Treasury  market began to dry up. As the chart
illustrates, Treasury and municipal yields widened out quite a bit at the end of
the period.

     Even after outperforming Treasurys in recent months,  municipal bonds still
offer  attractive  yields  on a  tax-equivalent  basis.  As of  February  28, an
investor in the highest  federal tax bracket  (39.6%) could earn a  tax-adjusted
yield of nearly 7% on a AAA-rated  10-year  municipal bond, well above the 5.24%
yield on a 10-year U.S. Treasury bond.

[right margin]

"EVEN AFTER OUTPERFORMING TREASURYS IN RECENT MONTHS, MUNICIPAL BONDS STILL
OFFER ATTRACTIVE YIELDS ON A TAX-EQUIVALENT BASIS."

MUNICIPAL BOND INDEX RETURNS
FOR THE SIX MONTHS ENDED FEBRUARY 28, 1999
   LEHMAN THREE-YEAR
      MUNICIPAL INDEX              2.53%
   LEHMAN FIVE-YEAR GENERAL
      OBLIGATION INDEX             2.72%
   LEHMAN LONG-TERM
      MUNICIPAL INDEX              2.24%

Source: Lipper Inc., Frank Russell Co.

[line graph - data below]

10-YEAR TREASURY YIELDS VS.
10-YEAR AAA MUNICIPAL YIELDS
                    10-Year            10-Year
                 AAA Municipal         Treasury
8/31/98              4.27%              4.96%
9/15/98              4.23%              4.84%
9/30/98              4.14%              4.37%
10/15/98             4.02%              4.32%
10/31/98             4.10%              4.54%
11/15/98             4.22%              4.80%
11/30/98             4.16%              4.71%
12/15/98             4.10%              4.62%
12/31/98             4.14%              4.63%
1/15/99              4.15%              4.68%
1/31/99              4.05%              4.63%
2/15/99              4.08%              5.05%
2/28/99              4.15%              5.24%

Source: Bloomberg Financial Markets


                                                  www.americancentury.com      3


California Limited-Term Tax-Free--Performance
- --------------------------------------------------------------------------------

<TABLE>
TOTAL RETURNS AS OF FEBRUARY 28, 1999

                 CALIFORNIA LIMITED-   LEHMAN 3-YEAR    CALIF. SHORT-INTERM. MUNICIPAL DEBT FUNDS(2)
                   TERM TAX-FREE      MUNICIPAL INDEX      AVERAGE RETURN        FUND'S RANKING
<S>                 <C>                 <C>                 <C>                <C>                       
6 MONTHS(1)            2.27%               2.53%              2.16%                   --
1 YEAR                 4.86%               5.24%              4.41%               5 OUT OF 13
=================================================================================================
AVERAGE ANNUAL RETURNS
=================================================================================================
3 YEARS                4.72%               5.08%              4.31%               4 OUT OF 10
5 YEARS                4.59%               5.12%              4.58%               4 OUT OF 6
LIFE OF FUND(3)        4.83%               5.36%              5.04%(4)            2 OUT OF 2(4)
</TABLE>

(1) Returns for periods less than one year are not annualized. 

(2) According to Lipper Inc., an independent mutual fund ranking service.

(3) The fund's inception date was 6/1/92.

(4) Since  6/30/92,  the date  nearest the fund's  inception  for which data are
    available.

See pages 39-40 for more information about returns,  the comparative  index, and
Lipper fund rankings.

[mountain graph - data below]

GROWTH OF $10,000  OVER LIFE OF FUND Value on 2/28/99  Lehman  3-Year  Municipal
Index $14,163 California Limited-Term Tax-Free $13,747

                   California
                  Limited-Term         Lehman 3-Year
                    Tax-Free          Municipal Index
DATE                  VALUE                VALUE
6/1/92               $10,000              $10,000
6/30/92              $10,074              $10,122
9/30/92              $10,277              $10,357
12/31/92             $10,413              $10,451
3/31/93              $10,616              $10,662
6/30/93              $10,754              $10,822
9/30/93              $10,913              $10,976
12/31/93             $11,029              $11,100
3/31/94              $10,880              $10,951
6/30/94              $10,941              $11,070
9/30/94              $11,036              $11,175
12/31/94             $10,961              $11,176
3/31/95              $11,289              $11,489
6/30/95              $11,517              $11,732
9/30/95              $11,682              $11,982
12/31/95             $11,872              $12,167
3/31/96              $11,902              $12,235
6/30/96              $11,993              $12,334
9/30/96              $12,161              $12,497
12/31/96             $12,339              $12,708
3/31/97              $12,383              $12,759
6/30/97              $12,626              $12,995
9/30/97              $12,842              $13,217
12/31/97             $12,997              $13,405
3/31/98              $13,127              $13,543
6/30/98              $13,247              $13,696
9/30/98              $13,573              $13,967
12/31/98             $13,636              $14,035
2/28/99              $13,747              $14,163

$10,000 investment made 6/1/92

The graph at left shows the growth of a $10,000  investment over the life of the
fund,  while the graph  below  shows the fund's  year-by-year  performance.  The
Lehman  3-Year  Municipal  Bond Index is provided for  comparison in each graph.
California  Limited-Term  Tax-Free's  total returns include  operating  expenses
(such as transaction  costs and management fees) that reduce returns,  while the
total returns of the index do not. Past  performance  does not guarantee  future
results.  Investment  return and principal value will fluctuate,  and redemption
value may be more or less than original cost.

[bar graph - data below]

ONE-YEAR RETURNS OVER LIFE OF FUND (PERIODS ENDED FEBRUARY 28)
                  California
                 Limited-Term       Lehman 3-Year
                    Tax-Free       Municipal Index
DATE                 RETURN             RETURN
2/28/93*             6.73%              6.94%
2/28/94              2.93%              3.67%
2/28/95              2.00%              2.72%
2/29/96              6.82%              7.71%
2/28/97              3.90%              4.56%
2/28/98              5.40%              5.42%
2/28/99              4.86%              5.24%

* From 6/1/92 (the fund's inception date) to 2/28/93.


4      1-800-345-2021


California Limited-Term Tax-Free--Q&A
- --------------------------------------------------------------------------------
/photo of Joel Silva/

     An  interview  with Joel  Silva,  a  portfolio  manager  on the  California
Tax-Free and Municipal funds investment team.

HOW DID  CALIFORNIA  LIMITED-TERM  TAX-FREE  PERFORM DURING THE SIX MONTHS ENDED
FEBRUARY 28, 1999?

     The fund  continued to  outperform  its peers.  For the  six-month  period,
California Limited-Term Tax-Free returned 2.27%, compared with the 2.16% average
return of the 13 "California Short-Intermediate Municipal Debt Funds" tracked by
Lipper Inc.

     The  fund's   longer-term   returns  also  consistently  beat  the  average
California  short-intermediate  municipal fund. (See the previous page for other
fund performance comparisons.)

WHAT WAS BEHIND THE FUND'S  OUTPERFORMANCE?

     One  reason is that we were  better  positioned  to  benefit  from  falling
interest  rates  than  our  peers  were.  We  extended  California  Limited-Term
Tax-Free's  duration  from 3.0 years to 3.3 years during the  six-month  period.
(Duration measures the portfolio's sensitivity to changes in interest rates. The
longer the fund's duration, the greater the share price fluctuates when interest
rates change.) As short-term  municipal  bond yields fell,  our longer  duration
helped the fund generate more gains on its bonds.

     Another important factor was our focus on adding yield, which resulted in a
fund  yield  that  was  well  above  average.  As  of  February  28,  California
Limited-Term  Tax-Free's  30-day  SEC yield was 3.03%,  compared  with the 2.77%
yield of the average California  short-intermediate municipal fund (according to
Lipper).

WHY IS YIELD IMPORTANT?

     For one thing, we try to provide  shareholders with as much tax-free income
as we can,  within  our  investment  constraints.  But  yield is also  important
because, in shorter-term funds like this, interest income makes up a significant
portion of the total  return.  So,  we're  always  looking to maximize our yield
whenever possible.

WHAT DID YOU DO TO BOOST THE  FUND'S YIELD?

     We purchased some put bonds,  which are  longer-term  municipal  securities
that can be "put  back"--that  is, sold at face value to a specific  dealer at a
prearranged  date.  These bonds gave us an extra 10-40  basis  points  (0.10% to
0.40%--a basis point equals 0.01%) in yield,  even though they were high-quality
bonds. The only drawback is that they are a little less liquid (harder to sell),
but that's not really a problem for us because we have plenty of liquid bonds in
the portfolio.

     We also took  advantage  of types of bonds  that were out of favor with the
retail sector of the market.

WHO MAKES UP THE RETAIL SECTOR?

     It's basically  individual  investors,  as opposed to mutual funds or other
institutions.  Individuals make up a big part of the municipal market,  and they
tend to invest in bonds with specific characteristics--shorter-term bonds

[right margin]

"YIELD IS IMPORTANT BECAUSE, IN SHORTER-TERM FUNDS LIKE THIS, INTEREST INCOME
MAKES UP A SIGNIFICANT PORTION OF THE TOTAL RETURN."

YIELDS AS OF FEBRUARY 28, 1999

  30-DAY SEC YIELD                 3.03%

  30-DAY TAX-EQUIVALENT YIELDS
    34.70% TAX BRACKET             4.64%
    37.42% TAX BRACKET             4.84%
    41.95% TAX BRACKET             5.22%
    45.22% TAX BRACKET             5.53%

PORTFOLIO AT A GLANCE
                            2/28/99            8/31/98
NUMBER OF SECURITIES          90                86
WEIGHTED AVERAGE
  MATURITY                  4.0 YRS           3.6 YRS
AVERAGE DURATION            3.3 YRS           3.0 YRS
EXPENSE RATIO               0.51%*             0.52%

* Annualized.

Investment terms are defined in the Glossary on page 40.


                                                  www.americancentury.com      5


California Limited-Term Tax-Free--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

that are  non-callable  (meaning they can't be paid off early) and that they can
buy at par (a price equal to the face value).

     Retail  investors  typically  buy newly issued  bonds,  but new issuance in
California has been very limited so far in 1999. Instead,  individuals have been
buying  existing  bonds,  and  that  demand  has  brought  down  the  yields  of
non-callable par bonds.

     As a result,  we sold some of our par bonds at a profit and  replaced  them
with bonds that  individual  investors  were  avoiding,  like callable bonds and
non-par bonds. And the best part about these trades is that we were able to pick
up a little yield while improving the fund's overall credit quality.

DOES THAT EXPLAIN WHY THE FUND OWNS MORE AAA-RATED  BONDS THAN IT DID SIX MONTHS
AGO (SEE THE TABLE AT LEFT)?

     That's  part of it.  Most of the bonds we bought for yield were rated AA or
better.

     But we also  made a  conscious  choice to trade up in  credit  quality.  By
November,  credit spreads--the differences in yield between municipal bonds with
different  credit  ratings--had  narrowed   considerably,   largely  because  of
increased credit upgrades and wider use of bond insurance.

     We felt that credit  spreads had gotten  about as narrow as they would get,
so we reduced our exposure to lower-rated bonds. Right now, more than two-thirds
of the  portfolio is rated AA or AAA. If credit  spreads  widen back out to more
normal levels,  our  higher-rated  bonds would likely  outperform  lower-quality
ones.

HAVE YOU SEEN ANY EVIDENCE OF WIDENING CREDIT SPREADS?

     Yes. One prominent  municipal bond insurer recently  indicated that it will
be more  selective  about the bonds it insures going  forward.  This is a change
from the past couple of years,  when it seemed  like  insurers  were  willing to
insure almost any municipal bond.

     As a result,  we could see more bonds  coming to market with  lower-quality
ratings. And a greater supply of lower-rated bonds means wider credit spreads.

     But  it's  too  early  to  tell  whether  this is an  isolated  case or the
beginning of a trend among bond insurers.  The California  economy  remains very
healthy, and that's generally positive for credit quality.

WHAT EFFECT DOES THE STRONG STATE ECONOMY HAVE ON CALIFORNIA MUNICIPAL BOND
YIELDS?

     In general,  a strong economy tends to bring  municipal  yields down.  It's
partly because of improving credit  quality--increased  economic growth leads to
higher tax revenues,  which strengthen the ability of  municipalities to pay off
their debt. Credit quality goes up, and yields come down correspondingly.

     In  California,  one side  effect of the robust  economy  has been less new
issuance of municipal  bonds.  Budget surpluses at most  municipalities  reduced
their need to borrow,  so they've issued less debt. As I mentioned  before,  the
lack of new supply had a significant  impact on the California  municipal market
during the past six months and helped bring short-term yields down.

[left margin]

"WE FELT THAT CREDIT SPREADS HAD GOTTEN ABOUT AS NARROW AS THEY WOULD GET, SO WE
REDUCED OUR EXPOSURE TO LOWER-RATED BONDS. RIGHT NOW, MORE THAN TWO-THIRDS OF
THE PORTFOLIO IS RATED AA OR AAA."

PORTFOLIO COMPOSITION BY
CREDIT RATING
              % OF FUND INVESTMENTS
             AS OF             AS OF
            2/28/99           8/31/98
AAA           53%               43%
AA            15%               14%
A             27%               36%
BBB            5%                7%

Ratings provided by Standard & Poor's.  See Credit Rating  Guidelines on page 39
for more information.


6      1-800-345-2021


California Limited-Term Tax-Free--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

DO YOU EXPECT LOWER MUNICIPAL YIELDS GOING FORWARD?

     We think California municipal yields are in a "trading range," meaning that
we expect yields to fluctuate  within a fairly narrow range for the  foreseeable
future.  Right now,  yields are near the top of the range,  so we may see yields
decline in the coming months.

     We also  expect to see the  economy  slow  down a bit in 1999.  In the last
couple  of years,  there's  been a  pattern  in the U.S.  economy--unsustainably
strong  growth in the fourth  quarter,  and then slower  growth as the  consumer
takes a breather in the first part of the following year. We anticipate the same
modest slowing pattern in the first half of this year,  which would be favorable
for bonds in general.

     It's worth noting that  short-term  municipal  yields are still  attractive
compared with short-term  Treasury  yields,  so municipal bonds could also get a
boost from increased investor demand.

WHAT ARE YOUR  PLANS  FOR  CALIFORNIA  LIMITED-TERM  TAX-FREE  OVER THE NEXT SIX
MONTHS?

     For now, we'll maintain the fund's longer-than-average duration, which will
enhance returns if short-term  municipal yields fall. In addition,  we intend to
stick with higher-quality bonds until we see wider credit spreads.

     We're also  positioning  the fund to take  advantage  of a narrowing  trend
among short-term  municipal yields.  During the past six months,  the difference
between the yields of one- and five-year  municipal bonds widened out from about
45 basis points to 75 basis points (0.45% to 0.75%).  That's about as wide as we
think that gap will get, so we're in the process of repositioning  the portfolio
to benefit if that gap shrinks.

[right margin]

"SHORT-TERM MUNICIPAL YIELDS ARE STILL ATTRACTIVE COMPARED WITH SHORT-TERM
TREASURY YIELDS, SO MUNICIPAL BONDS COULD ALSO GET A BOOST FROM INCREASED
INVESTOR DEMAND."

TOP FIVE SECTORS (AS OF 2/28/99)
                            % OF FUND INVESTMENTS
COPS/LEASES                           34%
HOSPITAL REVENUE                      13%
GO                                    10%
ELECTRIC REVENUE                       9%
SALES TAX REVENUE                      7%

TOP FIVE SECTORS (AS OF 8/31/98)
                            % OF FUND INVESTMENTS
COPS/LEASES                           27%
HOSPITAL REVENUE                      12%
ELECTRIC REVENUE                      11%
HOUSING REVENUE                        9%
GO                                     9%

Security types are defined on pages 40-41.


                                                  www.americancentury.com      7


Cal. Limited-Term Tax-Free--Sch. of Investments
- --------------------------------------------------------------------------------

FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

MUNICIPAL SECURITIES--99.5%
CALIFORNIA--98.1%
               $1,235,000  Association of Bay Area
                              Governments Finance Auth.
                              COP, (Episcopal Homes
                              Foundation), 4.50%, 7/1/03            $  1,264,060
                2,450,000  Association of Bay Area
                              Governments Finance Auth.
                              Rev. COP, (Episcopal Homes
                              Foundation), 4.80%, 7/1/06               2,536,485
                1,245,000  Association of Bay Area
                              Governments Finance Auth.
                              COP, (Rhoda Haas Goldman
                              Plaza), 5.00%, 5/15/07
                              (California Mortgage Insurance)          1,309,566
                  565,000  California Educational Facilities
                              Auth. Rev., (Los Angeles
                              College Chiropractic), 4.45%,
                              11/1/99                                    569,819
                  590,000  California Educational Facilities
                              Auth. Rev., (Los Angeles
                              College Chiropractic), 4.60%,
                              11/1/00                                    598,797
                1,145,000  California Educational Facilities
                              Auth. Rev., (Pepperdine
                              University), 5.125%, 1/15/02
                              (AMBAC)                                  1,195,769
                1,080,000  California Educational Facilities
                              Auth. Rev., Series 1995 A,
                              (Pooled College & University
                              Project), 4.95%, 12/1/02                 1,129,486
                  395,000  California Educational Facilities
                              Auth. Rev., Series 1997 B,
                              (Pooled College & University
                              Projects), 5.45%, 4/1/02                   414,154
                  420,000  California Educational Facilities
                              Auth. Rev., Series 1997 B,
                              (Pooled College & University
                              Projects), 5.55%, 4/1/03                   446,401
                  440,000  California Educational Facilities
                              Auth. Rev., Series 1997 B,
                              (Pooled College & University
                              Projects), 5.65%, 4/1/04                   473,686
                  465,000  California Educational Facilities
                              Auth. Rev., Series 1997 B,
                              (Pooled College & University
                              Projects), 5.75%, 4/1/05                   506,655
                1,140,000  California Educational Facilities
                              Auth. Rev., Series 1995 A,
                              (University Project), 4.55%,
                              12/1/99                                  1,153,418
                1,710,000  California Educational Facilities
                              Auth. Rev., Series 1997 A,
                              (University of Southern
                              California), 5.60%, 10/1/01              1,807,282

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $1,910,000  California Educational Facilities
                              Auth. Rev., Series 1997 A,
                              (University of Southern
                              California), 5.60%, 10/1/03           $  2,072,560
                1,445,000  California Health Facilities
                              Financing Auth. Rev., (Little Co.
                              Mary Health Service), 4.25%,
                              10/1/03 (AMBAC)                          1,476,125
                1,000,000  California Health Facilities
                              Financing Auth. Rev., (Sisters
                              Providence), 5.25%, 10/1/01              1,044,700
                1,180,000  California Health Facilities
                              Financing Auth. Rev., (Valley
                              Presbyterian Hospital), 5.25%,
                              5/1/02 (MBIA)                            1,239,590
                1,750,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1993 A, (St. Francis Memorial
                              Hospital), 5.50%, 11/1/01(1)             1,848,595
                1,000,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1998 A, (Casa De Las
                              Campanas), 5.00%, 8/1/04
                              (California Mortgage Insurance)          1,053,590
                1,245,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1998 A, (Kaiser Permanente),
                              5.00%, 6/1/06 (FSA)                      1,316,700
                1,600,000  California Public Works Board
                              Lease Rev., Series 1995 A,
                              (Department of Justice
                              Building), 5.50%, 5/1/00                 1,644,576
                3,000,000  California Public Works Board
                              Lease Rev., Series 1997 A,
                              (California Community Colleges),
                              5.00%, 4/1/02                            3,125,970
                1,065,000  California Public Works Board
                              Lease Rev., Series 1997 A,
                              (California Science Center),
                              4.50%, 10/1/04                           1,104,139
                1,025,000  California Special Districts
                              Association Finance Corp. COP,
                              Series 1998 GG, (Special
                              Districts Financing), 4.25%,
                              9/1/02 (FSA)                             1,053,454
                1,000,000  California State GO, 5.00%,
                              10/1/06                                  1,067,960
                2,325,000  California State GO, 6.10%,
                              2/1/02 (AMBAC)                           2,493,586
                1,500,000  California State GO, 6.25%,
                              9/1/04                                   1,687,215
                1,600,000  California State GO, 6.70%,
                              10/1/01                                  1,731,744
                1,965,000  California Statewide Communities
                              Development Auth. COP, (St.
                              Joseph Health System
                              Obligation Group), 5.00%,
                              7/1/06                                   2,065,294

                                               See Notes to Financial Statements


8      1-800-345-2021


Cal. Limited-Term Tax-Free--Sch. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $1,000,000  California Statewide Community
                              Development Auth. Rev., Series
                              1998 A, (Sherman Oaks),
                              5.00%, 8/1/05 (AMBAC and
                              California Mortgage Insurance)        $  1,062,300
                4,825,000  Central Valley Financing Auth.
                              Cogeneration Project Rev.,
                              (Carson Ice General), 4.50%,
                              7/1/01 (MBIA)                            4,951,801
                3,000,000  Central Valley Schools Financing
                              Auth. Tax and Rev. Anticipation
                              Notes, 3.50%, 1/27/00                    3,015,630
                3,175,000  City of Whittier Health Rev.,
                              (Presbyterian Intercommunity
                              Hospital), 5.50%, 6/1/02
                              (MBIA)                                   3,363,532
                1,100,000  Clovis Unified School District
                              COP, (Stadium & Relocatables
                              Financing), 4.375%, 7/1/04               1,128,424
                1,270,000  Contra Costa County Public Lease
                              Financing Rev., Series 1999 A,
                              4.00%, 6/1/03 (MBIA)                     1,290,104
                1,000,000  Encinitas Unified School District
                              COP, 5.00%, 9/1/01                       1,035,350
                1,775,000  Irvine Unified School District
                              Special Tax, (Community
                              Facilities District No. 86-1),
                              5.25%, 11/1/01 (AMBAC)                   1,863,253
                1,400,000  Irvine Unified School District
                              Special Tax, (Community
                              Facilities District No. 86-1),
                              5.25%, 11/1/05 (AMBAC)                   1,519,126
                2,955,000  Los Angeles Building Auth. Lease
                              Rev., Series 1995 A, 5.30%,
                              5/1/01                                   3,072,018
                1,000,000  Los Angeles Building Auth. Lease
                              Rev., Series 1995 A, 4.90%,
                              5/1/03                                   1,044,650
                1,600,000  Los Angeles Building Auth. Lease
                              Rev., Series 1995 A, 5.60%,
                              5/1/04                                   1,731,440
                1,230,000  Los Angeles Community
                              Redevelopment Agency
                              Financing Auth. Rev., Series
                              1998 E, (Pooled Financing-
                              Monterey), 4.50%, 9/1/02
                              (FSA)                                    1,268,487
                2,100,000  Los Angeles Community
                              Redevelopment Agency Tax
                              Allocation, Series 1997 I,
                              (Central Business District),
                              5.00%, 11/15/01                          2,165,499
                1,800,000  Los Angeles Convention and
                              Exhibition Center COP, 6.60%,
                              8/15/99 (AMBAC)                          1,831,374
                5,000,000  Los Angeles COP, (Equipment &
                              Real Estate Acquisition Program
                              AC), 4.25%, 10/1/01                      5,097,150

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $1,000,000  Los Angeles COP, (Equipment &
                              Real Estate Acquisition Program
                              AC), 4.50%, 10/1/04                   $  1,033,180
                2,500,000  Los Angeles COP, (Equipment and
                              Real Property Acquisition
                              Program AE), 4.00%, 12/1/03
                              (AMBAC)                                  2,529,650
                1,750,000  Los Angeles County Capital Asset
                              Leasing Corp. Rev., Series
                              1998 B, 4.00%, 12/1/00                   1,762,023
                1,265,000  Los Angeles County Capital Asset
                              Leasing Corp. Rev., 5.625%,
                              12/1/03 (AMBAC)                          1,368,376
                1,000,000  Los Angeles County Metropolitan
                              Transportation Auth. Sales Tax
                              Rev., Series 1995 A,
                              (Proposition C), 5.90%, 7/1/02
                              (AMBAC)                                  1,076,210
                1,000,000  Los Angeles County Metropolitan
                              Transportation Auth. Sales Tax
                              Rev., Series 1995 A,
                              (Proposition C), 5.90%, 7/1/05
                              (AMBAC)                                  1,117,450
                2,645,000  Los Angeles County Metropolitan 
                              Transportation Auth. Sales Tax 
                              Rev., Series 1997 A, (Proposition
                              A), 5.50%, 7/1/02
                              (MBIA)                                   2,813,592
                2,360,000  Los Angeles County Public Works
                              Financing Auth. Lease Rev.,
                              Series 1996 A, 6.00%, 9/1/04
                              (MBIA)                                   2,625,382
                1,500,000  Los Angeles County Public Works
                              Financing Auth. Lease Rev.,
                              Series 1997 A, (Master
                              Reference), 4.50%, 3/1/05
                              (FSA)                                    1,553,925
                5,000,000  Los Angeles County Public Works
                              Financing Auth. Rev., Series
                              1997 A, (Regional Park &
                              Open Space District), 5.00%,
                              10/1/01                                  5,206,600
                1,950,000  Los Angeles County Public Works
                              Financing Auth. Rev., Series
                              1997 A, (Regional Park and
                              Open Space District), 6.00%,
                              10/1/02                                  2,113,020
                1,015,000  Los Angeles County Schools
                              Regionalized Business Services
                              COP, Series 1997 C, 4.35%,
                              10/1/04 (FSA)                            1,041,075
                3,000,000  Los Angeles GO, Series 1994 A,
                              5.40%, 9/1/03 (MBIA)                     3,226,350
                3,100,000  Los Angeles Unified School
                              District GO, Series 1997 A,
                              5.00%, 7/1/04 (FGIC)                     3,291,425
                1,000,000  Los Angeles Wastewater System
                              Rev., 6.70%, 2/1/00                      1,031,740

See Notes to Financial Statements


                                                  www.americancentury.com      9


Cal. Limited-Term Tax-Free--Sch. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $1,250,000  Los Angeles Wastewater System
                              Rev., Series 1990 A, 6.80%,
                              2/1/01                                $  1,311,250
                1,000,000  Los Angeles Wastewater System
                              Rev., Series 1996 A, 6.00%,
                              2/1/03 (FGIC)                            1,087,780
                1,000,000  Metropolitan Water District of
                              Southern California Waterworks
                              Rev., 6.375%, 7/1/02                     1,083,100
                2,000,000  Modesto, Stockton, Redding
                              Public Power Agency San Juan
                              Project Rev., Series 1997 G,
                              5.50%, 7/1/01 (MBIA)                     2,098,740
                4,000,000  Northern California Power Agency
                              Public Power Rev., Series
                              1998 A, (Geothermal Project
                              No. 3), 4.75%, 7/1/03
                              (AMBAC)                                  4,182,600
                1,365,000  Ontario Redevelopment Financing
                              Auth. Rev., (Center City
                              Cimarron), 5.70%, 8/1/01
                              (MBIA)                                   1,440,061
                1,500,000  Orange County Transportation
                              Sales Tax Rev., 5.50%, 2/15/01
                              (AMBAC)                                  1,562,265
                1,160,000  Oroville Hospital Rev., Series
                              1997 A, (Oroville Hospital),
                              4.75%, 12/1/04 (California
                              Mortgage Insurance)                      1,213,743
                1,000,000  Riverside County Asset Leasing
                              Corporation Leasehold Rev.,
                              Series 1993 A, (Riverside
                              County Hospital), 5.90%,
                              6/1/02                                   1,066,960
                1,185,000  Riverside County Transportation
                              Commission Sales Tax Rev.,
                              Series 1993 A, 5.30%, 6/1/02
                              (AMBAC)                                  1,251,490
                2,000,000  Riverside Unified School District
                              COP, (School Facility Boarding
                              Refunding Program),  3.85%,
                              9/1/01 (FSA) (SBBPA: First
                              Union National Bank)                     2,016,560
                1,000,000  Sacramento County Multifamily
                              Housing Rev., Issue 1985 B,
                              (Parcwood Apartments), 4.80%,
                              9/1/02 (Guarantee:
                              Connecticut General Life
                              Insurance)                               1,020,720
                1,000,000  Sacramento Redevelopment
                              Agency Tax Allocation, Series
                              1998 A, (Merged Downtown
                              Redevelopment), 4.40%,
                              11/1/07 (FSA)                            1,025,280
                1,360,000  Sacramento Schools Insurance
                              Auth. Rev., Series 1993 C,
                              (Workers Compensation
                              Program), 5.75%, 6/1/03(1)               1,422,886

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $2,450,000  San Bernardino County COP,
                              (Medical Center Financing),
                              5.25%, 8/1/05 (MBIA)                  $  2,647,299
                2,000,000  San Bernardino County COP,
                              Series 1995 A, (Medical Center
                              Financing), 5.20%, 8/1/04
                              (MBIA)                                   2,134,660
                1,600,000  San Bernardino County
                              Transportation Auth. Sales Tax
                              Rev., Series 1993 A, 5.10%,
                              3/1/05 (MBIA)                            1,695,328
                2,000,000  San Diego Unified School District
                              COP, Series 1997 A, (Capital),
                              5.00%, 7/1/00                            2,048,740
                1,000,000  San Francisco City and County
                              Airport Commission International
                              Airport Rev., Issue 4, 5.625%,
                              5/1/05 (MBIA)                            1,087,160
                2,930,000  San Francisco Port Commission
                              Rev., 5.25%, 7/1/99                      2,953,294
                1,000,000  San Jacinto Unified School
                              District COP, (School Facilities
                              Bridge Funding),  3.875%,
                              10/1/02 (FSA) (SBBPA: First
                              Union National Bank)                     1,000,310
                1,085,000  Santa Barbara County COP,
                              4.90%, 3/1/01                            1,116,584
                  800,000  South San Francisco Capital
                              Improvements Financing Auth.
                              Rev., Series 1999 A, 4.10%,
                              9/1/05 (ACA)                               797,736
                1,000,000  Southern California Public Power
                              Auth. Electric Rev., 6.75%,
                              7/1/99                                   1,012,970
                1,000,000  Southern California Public Power
                              Auth. Power Project Rev., Series
                              1997 A, (Palo Verde), 5.00%,
                              7/1/04 (FSA)                             1,061,750
                1,075,000  Stockton Health Facilities Auth.
                              Rev., Series 1997 A, (Dameron
                              Hopital Association), 4.80%,
                              12/1/02                                  1,099,875
                1,040,000  Victor Valley Joint Union High
                              School District GO, 5.60%,
                              9/1/04 (MBIA)                            1,138,550
                                                                   -------------
                                                                     148,239,203
                                                                   -------------
PUERTO RICO--0.7%
                1,000,000  Puerto Rico Commonwealth
                              Highway and Transportation
                              Auth. Rev., Series 1996 Y,
                              6.00%, 7/1/03 (MBIA)                     1,093,830
                                                                   -------------
VIRGIN ISLANDS--0.7%
                1,000,000  Virgin Islands Water and Power
                              Auth. Electric System Rev.,
                              5.00%, 7/1/02                            1,034,630
                                                                   -------------
TOTAL MUNICIPAL SECURITIES                                           150,367,663
                                                                   -------------
   (Cost $147,046,249)

                                               See Notes to Financial Statements


10      1-800-345-2021


Cal. Limited-Term Tax-Free--Sch. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------
SHORT-TERM MUNICIPAL SECURITIES--0.5%
              $   800,000  California State Economic
                              Development Financing Auth.
                              Rev., Series 1998 C, VRDN,
                              3.50%, 3/1/99 (LOC: Bank of
                              America  N.T. & S.A.)                 $    800,000
                                                                   -------------
   (Cost $800,000)

TOTAL INVESTMENT SECURITIES--100.0%                                 $151,167,663
                                                                   =============
   (Cost $147,846,249)

NOTES TO SCHEDULE OF INVESTMENTS

ACA = American Capital Access Financial Guaranty Corp.

AMBAC = AMBAC Assurance Corporation

COP = Certificates of Participation

FGIC = Financial Guaranty Insurance Co.

FSA = Financial Security Assurance Inc.

GO = General Obligation

LOC = Letter of Credit

MBIA = MBIA Insurance Corp.

SBBPA = Standby Bond Purchase Agreement

VRDN = Variable Rate Demand Note.  Interest  reset date is indicated and used in
calculating the weighted  average  portfolio  maturity.  Rate shown is effective
February 28, 1999.

(1)  Escrowed  to  maturity  in U.S.  Government  or state and local  government
     securities.

- --------------------------------------------------------------------------------
UNDERSTANDING  THE  SCHEDULE  OF  INVESTMENTS--This  schedule  tells  you  which
investments your fund owned on the last day of the reporting period.

The schedule includes:

* a list of each investment

* the principal amount of each investment

* the market value of each investment

See Notes to Financial Statements


                                                 www.americancentury.com      11


California Int.-Term Tax-Free--Performance
- --------------------------------------------------------------------------------

<TABLE>
TOTAL RETURNS AS OF FEBRUARY 28, 1999

                 CALIFORNIA INT.-TERM   LEHMAN 5-YEAR   CALIF. INTERMEDIATE MUNICIPAL DEBT FUNDS(2)
                      TAX-FREE            GO INDEX          AVERAGE RETURN    FUND'S RANKING
<S>                      <C>             <C>                <C>                  <C>                   
6 MONTHS(1)             2.51%              2.72%                2.37%               --
1 YEAR                  5.46%              5.72%                5.16%          15 OUT OF 29
================================================================================================
AVERAGE ANNUAL RETURNS
================================================================================================
3 YEARS                 5.75%              5.66%                5.62%           9 OUT OF 21
5 YEARS                 5.73%              5.74%                5.56%           6 OUT OF 15
10 YEARS                6.98%              7.04%                6.98%           1 OUT OF 1
</TABLE>

The fund's inception date was 11/9/83.

(1) Returns for periods less than one year are not annualized.

(2) According to Lipper Inc., an independent mutual fund ranking service.

See pages 39-40 for more information about returns,  the comparative  index, and
Lipper fund rankings.

[mountain graph - data below]

GROWTH OF $10,000 OVER 10 YEARS
Value on 2/28/99
Lehman 5-Year GO Index                    $19,739
California Intermediate-Term Tax-Free     $19,643

                    California
                Intermediate-Term       Lehman 5-Year
                     Tax-Free             GO Index
DATE                  VALUE                VALUE
2/28/89              $10,000              $10,000
2/28/90              $10,858              $10,921
2/28/91              $11,787              $11,898
2/29/92              $12,690              $12,961
2/28/93              $14,297              $14,405
2/28/94              $14,870              $14,932
2/28/95              $15,073              $15,226
2/29/96              $16,614              $16,735
2/28/97              $17,314              $17,532
2/28/98              $18,630              $18,671
2/28/99              $19,643              $19,739

$10,000 investment made 2/28/89

The graph at left shows the growth of a $10,000  investment  in the fund over 10
years,  while the graph below  shows the fund's  year-by-year  performance.  The
Lehman 5-Year General Obligation Index is provided for comparison in each graph.
California Intermediate-Term Tax-Free's total returns include operating expenses
(such as transaction  costs and management fees) that reduce returns,  while the
total returns of the index do not. Past  performance  does not guarantee  future
results.  Investment  return and principal value will fluctuate,  and redemption
value may be more or less than original cost.

[bar graph - data below]

ONE-YEAR RETURNS OVER 10 YEARS (PERIODS ENDED FEBRUARY 28)
                  California
               Intermediate-Term    Lehman 5-Year
                   Tax-Free           GO Index
DATE                RETURN             RETURN
2/28/90              8.58%              8.35%
2/28/91              8.56%              8.96%
2/29/92              7.66%              8.92%
2/28/93             12.66%             11.12%
2/28/94              4.01%              3.67%
2/28/95              1.36%              1.97%
2/29/96             10.23%              9.91%
2/28/97              4.21%              4.76%
2/28/98              7.60%              6.50%
2/28/99              5.46%              5.72%


12      1-800-345-2021


California Intermediate-Term Tax-Free--Q&A
- --------------------------------------------------------------------------------
/photo of Colleen Denzler/

     An interview with Colleen  Denzler,  a portfolio  manager on the California
Tax-Free and Municipal funds investment team.

HOW DID  CALIFORNIA  INTERMEDIATE-TERM  TAX-FREE  PERFORM  DURING THE SIX MONTHS
ENDED FEBRUARY 28, 1999?

     The fund  continued to  outperform  its peers.  For the  six-month  period,
California  Intermediate-Term  Tax-Free returned 2.51%,  compared with the 2.37%
average return of the 29 "California  Intermediate Municipal Debt Funds" tracked
by Lipper Inc.

     The  fund's   longer-term   returns  also  consistently  beat  the  average
California  intermediate  municipal  fund. (See the previous page for other fund
performance comparisons.)

WHY DID THE FUND OUTPERFORM ITS PEER GROUP AVERAGE?

     We had a longer duration than many of our peers, which meant we were better
positioned  to benefit  from  falling  interest  rates.  (Duration  measures the
portfolio's  sensitivity  to changes in  interest  rates.  The longer the fund's
duration, the greater the share price fluctuates when interest rates change.)

     Municipal  yields were  fairly  volatile  over the past six months,  so our
longer  duration  helped  when  yields  fell and hurt when they  rose.  Overall,
though,  intermediate-term municipal yields declined, so the fund generated more
gains on its bonds.

     California  Intermediate-Term Tax-Free's duration lengthened from 5.6 years
to 6.0 years during the six-month  period.  We accomplished  this by adding some
bonds with maturities of 15-20 years to the portfolio,  including several Puerto
Rico bonds.

DO PUERTO RICO BONDS HAVE TAX-EXEMPT STATUS IN CALIFORNIA?

     Yes. Municipal bonds issued by United States  territories--including Puerto
Rico,  Guam, and the Virgin  Islands--have  the unique  distinction of providing
federal  and  state  tax-free  income  for  investors  in  all 50  states.  That
distinction makes them very desirable  investments,  especially for investors in
high-tax  states  like  California  and New York.  Heavy  demand from around the
country means that Puerto Rico municipal  yields are typically 5-10 basis points
(0.05% to 0.10%--a  basis point equals  0.01%) lower than  California  municipal
yields.

WHY DID YOU BUY THESE PUERTO RICO BONDS?

     They just  happened to fit our needs at the time. We were looking to extend
the fund's  duration by buying some bonds in the 15- to 20-year  maturity range,
but the limited supply  available in California  depressed yields and made those
bonds very expensive.

[right margin]

"THE FUND'S LONGER-TERM RETURNS CONSISTENTLY BEAT THE AVERAGE CALIFORNIA
INTERMEDIATE MUNICIPAL FUND."

YIELDS AS OF FEBRUARY 28, 1999

  30-DAY SEC YIELD                3.46%

  30-DAY TAX-EQUIVALENT YIELDS
    34.70% TAX BRACKET            5.30%
    37.42% TAX BRACKET            5.53%
    41.95% TAX BRACKET            5.96%
    45.22% TAX BRACKET            6.31%

PORTFOLIO AT A GLANCE
                            2/28/99            8/31/98
NUMBER OF SECURITIES          145               151
WEIGHTED AVERAGE
MATURITY                    9.1 YRS           8.6 YRS
   AVERAGE DURATION         6.0 YRS           5.6 YRS
EXPENSE RATIO               0.51%*             0.51%

* Annualized.

Investment terms are defined in the Glossary on page 40.


                                                 www.americancentury.com      13


California Intermediate-Term Tax-Free--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

     Instead,  we found what we were looking for in Puerto Rico. We were able to
get insured,  AAA-rated  Puerto Rico bonds in the maturity range we wanted while
picking up a few basis points in yield over comparable California securities.

     This was a key theme to the changes we made to the portfolio  over the past
six   months--trying   to  add  yield  whenever  possible  while  maintaining  a
longer-than-average duration.

WHAT ELSE DID YOU DO TO BOOST CALIFORNIA INTERMEDIATE-TERM TAX-FREE'S YIELD?

     We were able to trade up in yield among the fund's  short-term  securities.
We own a number of shorter-term bonds because they help balance out the duration
of the longer-term bonds we added.

     During the past six months,  short-term  California municipal yields spread
out quite a bit--you  could  pick up an extra  75-100  basis  points in yield by
moving  from a one-year to a four-year  security,  compared  with maybe 35 basis
points six months ago.

     So we sold some  securities  maturing in less than a year and replaced them
with three- and four-year bonds.  This gave us a nice yield pick-up while having
little effect on the fund's duration or overall positioning.

     We also got some extra yield by investing in premium callable bonds.

WHAT ARE THOSE?

     Premium  bonds  trade at a price  above face value,  mainly  because  their
interest coupons are higher than prevailing market rates.

     Callable  bonds  allow the  municipality  that  issued them to pay back the
principal  early,  kind of like a homeowner  does when  refinancing  a mortgage.
Typically,  the issuer can only  "refinance"  the bonds on a specific call date.
The municipality  usually issues new bonds at a lower rate and uses the proceeds
to pay off the older bonds.

     As you might expect,  the higher interest rates of premium bonds means they
are more likely to be called.

HOW DID THESE SECURITIES PROVIDE  EXTRA YIELD?

     Instead of buying ordinary 10-year  municipal bonds, we bought  longer-term
premium callable bonds. Although these bonds had maturities of 15-20 years, they
had call dates of around 10 years.

     Because of their high interest  coupons,  the premium  callable  bonds were
priced in the  marketplace as if they would be called in 10 years.  As a result,
we got the price  volatility of a 10-year  bond,  but with the higher yield of a
15- to 20-year bond.

     The risk of this  approach  is that  interest  rates will rise to the point
where these  premium  bonds begin to trade based on their  maturity  date rather
than their call date. That would lead to greater price volatility at a time when
bond prices are falling. However, yields would have had to rise substantially to
affect the bonds we held.

[left margin]

"INSURED BONDS STILL MAKE UP TWO-THIRDS OF THE PORTFOLIO, AND MORE THAN 80% OF
THE FUND'S BONDS ARE RATED AA OR AAA. THIS REFLECTS OUR BELIEF THAT CREDIT
SPREADS--THE DIFFERENCES IN YIELD BETWEEN MUNICIPAL BONDS WITH DIFFERENT CREDIT
RATINGS --ARE ABOUT AS NARROW AS THEY'RE GOING TO GET."

PORTFOLIO COMPOSITION BY
CREDIT RATING
              % OF FUND INVESTMENTS
             AS OF             AS OF
            2/28/99           8/31/98
AAA          65%                64%
AA           17%                14%
A            17%                21%
BBB          1%                  1%

Ratings provided by Standard & Poor's.  See Credit Rating  Guidelines on page 39
for more information.


14      1-800-345-2021


California Intermediate-Term Tax-Free--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

DID THE PORTFOLIO'S CREDIT QUALITY CHANGE  AT ALL?

     No. Insured bonds still make up two-thirds of the portfolio, and more than
80% of the fund's bonds are rated AA or AAA.

     This  reflects  our belief that credit  spreads--the  differences  in yield
between  municipal bonds with different credit  ratings--are  about as narrow as
they're  going to get.  We expect to see credit  spreads  widen back out at some
point going  forward.  If that happens,  our  higher-rated  bonds will more than
likely outperform lower-quality ones.

     But it may be a while before that  happens.  The  California  economy is in
excellent shape, and that's usually good news for municipal credit quality.

DOES THAT ALSO MEAN GOOD NEWS FOR THE  CALIFORNIA  MUNICIPAL  BOND MARKET  GOING
FORWARD?

     The  resiliency of the  California  economy is definitely  positive for the
state's  municipal bonds. Six months ago, there were fears that the recession in
many Asian  economies  would have a negative  impact on  California  because the
state does a lot of business with that region.

     But the Asian slowdown had virtually no effect on the  California  economy.
Continued healthy economic growth leads to higher tax revenues, which strengthen
the ability of municipalities to pay off their debt. Credit quality goes up, and
so do bond prices as yields come down correspondingly.

     In addition to the favorable  economic  conditions,  longer-term  municipal
bonds are still fairly  attractive,  especially  relative to Treasury bonds. For
much of 1998,  municipal  bond  yields  were very high  compared  with  Treasury
yields.  In recent months,  short- and  intermediate-term  municipal yields have
fallen, but longer-term yields remained relatively high.

     We think this represents the best value in the municipal  market right now,
and that's one reason why we've added longer-term  municipal bonds to California
Intermediate-Term Tax-Free's portfolio over the past six months.

DO YOU PLAN TO MAINTAIN THIS POSITION GOING FORWARD?

     For the time  being.  If  longer-term  municipal  yields fall in the coming
months, we may look to trim our duration back toward a neutral  position.  Other
than that, though, we're pretty comfortable with our current position.

     We'll  continue  to look for  opportunities  to boost the level of tax-free
income in the portfolio,  and we also intend to stick with higher-quality  bonds
until we see wider credit spreads.

[right margin]

"LONGER-TERM MUNICIPAL BONDS ARE STILL FAIRLY ATTRACTIVE, ESPECIALLY RELATIVE TO
TREASURY BONDS. WE THINK THIS REPRESENTS THE BEST VALUE IN THE MUNICIPAL MARKET
RIGHT NOW."

TOP FIVE SECTORS (AS OF 2/28/99)
                           % OF FUND INVESTMENTS
COPS/LEASES                          26%
GO                                   20%
SALES TAX REVENUE                    12%
WATER AND SEWER REVENUE              11%
ELECTRIC REVENUE                      8%

TOP FIVE SECTORS (AS OF 8/31/98)
                           % OF FUND INVESTMENTS
COPS/LEASES                          27%
SALES TAX REVENUE                    13%
GO                                   13%
WATER AND SEWER REVENUE              11%
PREREFUNDED/ETM                      11%

Security types are defined on pages 40-41.


                                                 www.americancentury.com      15


Cal. Int.-Term Tax-Free--Schedule of Investments
- --------------------------------------------------------------------------------

FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

MUNICIPAL SECURITIES--99.0%
CALIFORNIA--90.0%
             $  8,845,000  Alameda County COP, (Santa Rita
                              Jail), 5.375%, 6/1/09 (MBIA)          $  9,607,616
                2,450,000  Association of Bay Area
                              Governments Financing Auth.
                              COP, (Episcopal Homes
                              Foundation), 4.80%, 7/1/06               2,536,485
                4,060,000  Burbank Redevelopment Agency
                              Tax Allocation, (West Olive),
                              6.50%, 12/1/01 (AMBAC)                   4,398,563
                1,335,000  California Community College
                              Financing Auth. Lease Rev.,
                              Series 1999 A, 4.20%,
                              10/1/10 (MBIA)                           1,316,030
                1,210,000  California Community College
                              Financing Auth. Lease Rev.,
                              Series 1999 A, 4.30%,
                              10/1/11 (MBIA)                           1,190,652
                1,175,000  California Educational Facility
                              Auth. Rev., (Santa Clara
                              University), 5.25%, 9/1/10
                              (MBIA)                                   1,249,131
                2,145,000  California Educational Facility Auth. 
                              Rev., (University of San Diego), 
                              6.75%, 10/1/00,
                              Prerefunded at 102% of Par
                              (MBIA)(1)                                2,308,964
                1,045,000  California Health Facilities
                              Financing Auth. Rev., (Valley
                              Presbyterian Hospital), 5.25%,
                              5/1/03 (MBIA)                            1,108,609
                1,500,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1989 A, (Kaiser Permanente),
                              6.70%, 10/1/99                           1,532,865
                1,745,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1993 A, (St. Francis Memorial
                              Hospital), 5.625%, 11/1/02(1)            1,871,600
                1,560,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1993 A, (St. Francis Memorial
                              Hospital), 5.75%, 11/1/03,
                              Prerefunded at 102% of Par(1)            1,729,244
                3,145,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1995 A, (Insured Health
                              Facility), 6.00%, 7/1/04
                              (AMBAC)                                  3,467,992
                1,000,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1998 A, (Casa De Las
                              Campanas), 5.50%, 8/1/12
                              (California Mortgage Insurance)          1,059,950

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

             $  3,250,000  California Public Works Board
                              Energy Efficiency Rev., Series
                              1991 A, (Pooled Project),
                              6.00%, 9/1/99                         $  3,301,480
                1,320,000  California Public Works Board
                              Energy Efficiency Rev., Series
                              1998 A, 5.00%, 10/1/11
                              (AMBAC)                                  1,388,508
                2,000,000  California Public Works Board
                              Lease Rev. COP, Series
                              1990 A, (University of
                              California), 6.90%, 9/1/00(2)            1,901,280
                4,520,000  California Public Works Board
                              Lease Rev. COP, Series
                              1992 A, (Archives Building
                              Project), 6.20%, 12/1/05
                              (AMBAC)                                  5,148,370
                1,000,000  California Public Works Board
                              Lease Rev. COP, Series
                              1992 A, (Various University of
                              California Projects), 5.90%,
                              12/1/03 (AMBAC)                          1,097,450
                3,700,000  California Public Works Board
                              Lease Rev. COP, Series
                              1993 D, (California State
                              Prisons), 5.25%, 6/1/08                  3,917,190
                3,000,000  California Public Works Board
                              Lease Rev. COP, Series
                              1994 A, (Various University of
                              California Projects), 6.15%,
                              11/1/04, Prerefunded at 102%
                              of Par(1)                                3,427,800
                1,010,000  California Public Works Board
                              Lease Rev. COP, Series
                              1997 A, (California Science
                              Center), 4.60%, 10/1/05                  1,052,238
                1,000,000  California Public Works Board
                              Lease Rev. COP, Series
                              1997 D, (Department of
                              Corrections), 5.75%, 9/1/06
                              (MBIA)                                   1,115,690
                1,470,000  California Public Works Board
                              Lease Rev. COP, Series
                              1996 C, (Department of
                              Corrections), 5.125%, 9/1/11
                              (MBIA)                                   1,555,157
                4,795,000  California State Department Water
                              Resource Rev., (Central Valley
                              Project), Series 1992 J-2,
                              (Water System), 5.80%,
                              12/1/04                                  5,317,032
                7,000,000  California State GO, 4.50%,
                              12/1/21 (FGIC)                           6,531,490
                5,925,000  California State GO, 4.75%,
                              9/1/11                                   6,137,352
                5,250,000  California State GO, 5.00%,
                              10/1/06                                  5,606,790
                6,460,000  California State GO, 5.00%,
                              10/1/07                                  6,899,151

                                               See Notes to Financial Statements


16      1-800-345-2021


Cal. Int.-Term Tax-Free--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

             $  4,700,000  California State GO, 5.00%,
                              10/1/11                               $  4,930,535
                5,860,000  California State GO, 5.75%,
                              10/1/08                                  6,608,146
                4,270,000  California State GO, 6.30%,
                              9/1/08 (MBIA)                            4,998,377
                2,500,000  California State GO, 6.50%,
                              10/1/05                                  2,883,425
               10,000,000  California State GO, 6.50%,
                              3/1/02 (AMBAC)                          10,855,500
                1,855,000  California State GO, 7.00%,
                              11/1/06 (FGIC)                           2,219,062
                3,000,000  California State Universities and
                              Colleges Rev., 5.75%, 11/1/15
                              (FGIC)                                   3,254,130
                8,000,000  California Statewide Communities
                              Development Auth. COP,
                              (California Lutheran Homes),
                              5.375%, 11/15/06                         8,682,400
                2,500,000  California Statewide Communities
                              Development Auth. COP, (St.
                              Joseph Health System
                              Obligation Group), 5.25%,
                              7/1/11                                   2,629,750
                2,385,000  California Statewide Communities
                              Development Auth. COP, (St.
                              Joseph Health System), 6.50%,
                              7/1/03(1)                                2,664,450
                2,545,000  Capistrano Unified Public
                              Financing Auth. Special Tax
                              Rev., Series 1996 A, (First
                              Lien), 6.00%, 9/1/06
                              (AMBAC)                                  2,876,919
                2,075,000  Chabot Las Positas Community
                              College District COP, 5.50%,
                              12/1/10 (FSA)                            2,310,990
                1,065,000  Contra Costa County Water
                              District Rev., Series 1990 A,
                              7.00%, 10/1/00, Prerefunded
                              at 102% of Par(1)                        1,148,432
                7,935,000  Contra Costa Transportation Auth.
                              Sales Tax Rev., Series 1993 A,
                              6.00%, 3/1/05 (FGIC)                     8,858,872
                1,220,000  Coronado Community
                              Development Agency Tax
                              Allocation, 6.00%, 9/1/08
                              (FSA)                                    1,374,306
                2,570,000  East Bay Municipal Utility District
                              Water System Rev., 6.00%,
                              6/1/05                                   2,803,330
                3,590,000  East Bay Municipal Utility District
                              Water System Rev., 4.50%,
                              6/1/12                                   3,594,488
                3,000,000  Fremont Unified School District
                              Alameda County GO, 5.25%,
                              9/1/16 (MBIA)                            3,126,780

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

             $  4,230,000  Fresno Special Tax, (Community
                              Facilities District No. 3), 4.75%,
                              9/1/05 (LOC:  Rabobank
                              International)                        $  4,315,446
                1,285,000  Garden Grove Agency Community
                              Development Tax Allocation,
                              (Garden Grove Community),
                              5.30%, 10/1/02                           1,346,988
                7,350,000  Imperial Irrigation District COP,
                              (Electrical System), 6.50%,
                              11/1/07 (MBIA)                           8,659,329
                1,225,000  Imperial Irrigation District COP,
                              (Electrical System), 5.20%,
                              11/1/09 (AMBAC)                          1,331,134
                2,715,000  Irvine Unified School District
                              Special Tax, (Community
                              Facilities District No. 86-1),
                              5.50%, 11/1/10 (AMBAC)                   2,999,885
                1,750,000  Loma Linda Hospital Rev.,
                              (University Medical Center),
                              6.95%, 12/1/05 (AMBAC)                   1,836,118
                2,300,000  Los Angeles Airport Rev., Series
                              1995 A, 6.00%, 5/15/05
                              (FGIC)                                   2,571,699
                4,000,000  Los Angeles Capital Asset Lease
                              Rev. COP, 5.875%, 12/1/05
                              (AMBAC)                                  4,454,120
                1,155,000  Los Angeles Convention and
                              Exhibition Center Auth. Lease
                              Rev. COP, Series 1993 A,
                              6.00%, 8/15/10 (MBIA)                    1,335,261
                4,315,000  Los Angeles COP, (Equipment &
                              Real Estate Acquisition
                              Program), 4.60%, 10/1/05                 4,480,178
                2,625,000  Los Angeles County Metropolitan
                              Transportation Auth. Rev., Series
                              1996 A, (Union Station), 5.10%,
                              7/1/10 (FSA)                             2,779,403
                1,000,000  Los Angeles County Metropolitan
                              Transportation Auth. Sales Tax
                              Rev., Series 1995 A,
                              (Proposition C), 5.90%, 7/1/06
                              (AMBAC)                                  1,124,670
                6,175,000  Los Angeles County Metropolitan
                              Transportation Auth. Sales Tax
                              Rev., Series 1997 A,
                              (Proposition A), 5.25%, 7/1/12
                              (MBIA)                                   6,551,428
                1,000,000  Los Angeles County Public
                              Properties COP, 6.25%,
                              4/1/00 (BIGI)                            1,034,620
                3,500,000  Los Angeles County Public Works
                              Financing Auth. Lease Rev.,
                              Series 1997 B, (Multiple Capital
                              Facilities), 5.125%, 12/1/17
                              (AMBAC)                                  3,570,000
                2,625,000  Los Angeles County Sanitation
                              Districts Financing Auth. Rev.,
                              Series 1993 A, (Capital),
                              5.20%, 10/1/05                           2,823,319

See Notes to Financial Statements


                                                 www.americancentury.com      17


Cal. Int.-Term Tax-Free--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

             $  2,900,000  Los Angeles County
                              Transportation Commission
                              COP, Series 1992 B, 6.00%,
                              7/1/01                                $  3,063,531
                4,665,000  Los Angeles County
                              Transportation Commission
                              COP, Series 1992 B, 6.20%,
                              7/1/03                                   5,101,504
                2,000,000  Los Angeles County
                              Transportation Commission
                              COP, Series 1992 B, 6.25%,
                              7/1/04                                   2,193,780
                2,500,000  Los Angeles County
                              Transportation Commission
                              Sales Tax Rev., Series 1991 A,
                              (Proposition A), 6.40%, 7/1/01,
                              Prerefunded at 102% of Par(1)            2,724,900
                3,515,000  Los Angeles County
                              Transportation Commission
                              Sales Tax Rev., Series 1992 A,
                              (Proposition C), 6.20%, 7/1/04           3,908,223
                3,765,000  Los Angeles County
                              Transportation Commission
                              Sales Tax Rev., Series 1992 A,
                              (Proposition C), 6.40%, 7/1/06           4,315,744
                4,780,000  Los Angeles County Wastewater
                              System Rev., Series 1992 B,
                              6.20%, 6/1/02, Prerefunded at
                              102% of Par (AMBAC)(1)                   5,271,575
                1,000,000  Los Angeles Department of Water
                              and Power Waterworks Rev.,
                              6.30%, 4/15/06 (FGIC)                    1,085,540
                8,490,000  Los Angeles Department of Water
                              and Power Waterworks Rev.,
                              5.00%, 10/15/14 (FGIC)                   8,697,241
                1,000,000  Los Angeles Unified School
                              District GO, Series 1997 A,
                              6.00%, 7/1/10 (FGIC)                     1,151,810
                2,900,000  Los Angeles Unified School
                              District GO, Series 1997 A,
                              6.00%, 7/1/11 (FGIC)                     3,345,701
                1,000,000  Los Angeles Unified School
                              District GO, Series 1997 A,
                              6.00%, 7/1/15 (FGIC)                     1,145,240
                4,150,000  Los Gatos-Saratoga Joint Unified
                              School District, Series 1998 A,
                              4.375%, 10/1/18                          3,825,719
                1,000,000  Metropolitan Water District of
                              Southern California Waterworks
                              Rev., 6.625%, 7/1/01,
                              Prerefunded at 102% of Par(1)            1,094,290
                5,000,000  Metropolitan Water District of
                              Southern California Waterworks
                              Rev., Series 1996 C, 5.00%,
                              7/1/10                                   5,288,600
                1,100,000  Mojave Water Agency
                              Improvement District GO,
                              (Morongo Basin), 5.40%,
                              9/1/08 (FGIC)                            1,206,007

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

             $  1,000,000  Morgan Hill Redevelopment
                              Agency Tax Allocation, (Ojo De
                              Agua Community Development),
                              5.50%, 3/1/99                         $  1,000,350
                1,130,000  Ontario Redevelopment Financing
                              Auth. Local Agency Rev., Series
                              1995 A, 5.80%, 9/2/06 (FSA)              1,234,389
                3,000,000  Orange County Water District
                              COP, Series 1997 A, 5.00%,
                              8/15/14 (MBIA)                           3,072,450
                1,330,000  Oxnard Harbor District Rev.,
                              7.00%, 8/1/04 (FSA)                      1,534,554
                1,000,000  Ramona Municipal Water District
                               COP, 6.90%, 10/1/01
                              (AMBAC)                                  1,073,540
                1,060,000  Redding Joint Powers Financing
                              Auth. Electric System Rev.,
                              Series 1996 A, 6.25%, 6/1/07
                              (MBIA)                                   1,222,721
                1,010,000  Richmond Joint Powers Financing
                              Auth. Rev. COP, Series 1995 A,
                              5.30%, 5/15/06                           1,079,478
                2,080,000  Riverside County Public Financing
                              Auth. Special Tax Rev., Series
                              1995 A, 5.25%, 9/1/04 (MBIA)             2,241,075
                1,225,000  Riverside County Transportation
                              Commission Sales Tax Rev.,
                              Series 1993 A, 5.60%, 6/1/05
                              (AMBAC)                                  1,347,169
                2,900,000  Riverside County Transportation
                              Commission Sales Tax Rev.,
                              Series 1993 A, 5.70%, 6/1/06
                              (AMBAC)                                  3,222,393
                1,025,000  Rocklin Unified School District
                              Community Facility Special Tax
                              Rev., (No. 1), 5.20%, 9/1/09
                              (MBIA)                                   1,105,955
                2,600,000  Sacramento County Multifamily
                              Housing Rev., Issue 1985 B,
                              (Parcwood Apartments), 4.80%,
                              9/1/02 (Guaranteed:
                              Connecticut General Life
                              Insurance)                               2,653,872
                1,000,000  Sacramento Municipal Utility
                              District Electric Rev., Series
                              1992 A, 6.25%, 8/15/10
                              (MBIA)                                   1,178,560
                5,710,000  Sacramento Municipal Utility
                              District Electric Rev., Series
                              1992 C, 5.75%, 11/15/07
                              (MBIA)                                   6,220,931
                3,500,000  Sacramento Municipal Utility
                              District Electric Rev., Series
                              1994 H, 5.75%, 1/1/11
                              (MBIA)                                   3,831,520
                4,230,000  Sacramento Municipal Utility
                              District Electric Rev., Series
                              1997 L, 5.00%, 7/1/10
                              (AMBAC)                                  4,484,054

                                               See Notes to Financial Statements


18      1-800-345-2021


Cal. Int.-Term Tax-Free--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

             $  1,205,000  Saddleback Valley Unified School
                              District Public Financing Special
                              Tax Rev., 6.00%, 9/1/11 (FSA)         $  1,395,944
                5,000,000  San Bernardino County COP,
                              Series 1995 A, (Medical
                              Center), 5.75%, 8/1/07 (MBIA)            5,611,300
                2,000,000  San Diego County COP, (Central
                              Jail), 5.00%, 10/1/10
                              (AMBAC)                                  2,096,360
                7,200,000  San Diego County Water Auth.
                              Rev. COP, Series 1991 A,
                              6.125%, 5/1/03                           7,734,456
                2,000,000  San Diego County Water Auth.
                              Rev. COP, Series 1998 A,
                              4.50%, 5/1/24 (FGIC)                     1,856,200
                3,505,000  San Diego Regional
                              Transportation Commission
                              Sales Tax Rev., Series 1992 A,
                              5.50%, 4/1/04 (FGIC)                     3,798,053
                5,175,000  San Diego Regional
                              Transportation Commission
                              Sales Tax Rev., Series 1992 A,
                              5.50%, 4/1/05 (FGIC)                     5,651,048
                4,000,000  San Diego Regional
                              Transportation Commission
                              Sales Tax Rev., Series 1994 A,
                              6.00%, 4/1/04 (FGIC)                     4,424,640
                1,000,000  San Francisco Bay Area Rapid
                              Transit District Sales Tax Rev.,
                              5.35%, 7/1/07 (FGIC)                     1,074,880
                2,200,000  San Francisco City and County
                              Airport Commission International
                              Airport Rev., Issue 20, 4.50%,
                              5/1/17 (MBIA)                            2,098,580
                3,000,000  San Francisco City and County
                              Airport Commission International
                              Airport Rev., Issue 20, 4.50%,
                              5/1/19 (MBIA)                            2,823,270
                7,000,000  San Francisco City and County GO, 
                              Series 1, 4.50%, 6/15/05
                              (FGIC)                                   7,273,980
                1,605,000  San Francisco City and County
                              Public Utilities Commission
                              Water Rev., Series 1996 A,
                              5.00%, 11/1/11                           1,683,372
                3,405,000  San Francisco Port Commission
                              Rev., 5.625%, 7/1/02                     3,614,373
                1,000,000  San Jacinto Unified School
                              District COP, 3.875%, 10/1/02
                              (FSA) (SBBPA: First Union
                              National Bank)                             998,010
                3,950,000  San Jose Financing Auth. Rev.
                              COP, (Convention Center),
                              6.00%, 9/1/05                            4,248,107
                4,580,000  San Jose Financing Auth. Rev.
                              COP, Series 1993 A,
                              (Convention Center), 6.10%,
                              9/1/06                                   4,936,553

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

             $  3,875,000  San Jose Redevelopment Agency
                              Tax Allocation, Series 1992 A,
                              (Merged Area Redevelopment),
                              6.00%, 8/1/02 (MBIA)(1)               $  4,158,108
                1,620,000  San Mateo County Joint Powers
                              Auth. Lease Rev., Series
                              1997 A, 4.875%, 7/15/11
                              (FSA)                                    1,683,115
                4,585,000  San Mateo County Transportation
                              District Sales Tax Rev., Series
                              1993 A, 5.00%, 6/1/11 (MBIA)             4,867,895
                1,750,000  San Mateo County Transportation
                              District Sales Tax Rev., Series
                              1993 A, 5.25%, 6/1/15 (MBIA)             1,857,433
                1,015,000  Santa Ana Police Administration
                              COP, Series 1994 A, 5.50%,
                              7/1/07 (MBIA)                            1,101,194
                3,610,000  Santa Clara County Financing
                              Auth. Lease Rev., Series
                              1994 A, (VMC Facility
                              Replacement), 6.75%,
                              11/15/04, Prerefunded at
                              102% of Par (AMBAC)(1)                   4,246,551
                1,510,000  Santa Clara County Financing
                              Auth. Lease Rev., Series
                              1997 A, 6.00%, 11/15/12
                              (AMBAC)                                  1,752,506
                4,000,000  Santa Clara County Financing
                              Auth. Lease Rev., Series
                              1998 A, (Multiple Facilities),
                              4.125%, 5/15/07 (AMBAC)                  4,030,360
                3,440,000  Santa Clara County Financing
                              Auth. Lease Rev., Series
                              1998 A, (Multiple Facilities),
                              4.30%, 5/15/09 (AMBAC)                   3,474,710
                5,255,000  Santa Clara County Financing
                              Auth. Lease Rev., Series
                              1998 A, (Multiple Facilities),
                              4.50%, 5/15/11 (AMBAC)                   5,303,136
                1,785,000  South Sutter Water District
                              Hydroelectric Rev., 6.80%,
                              8/1/01 (FGIC)                            1,849,563
                3,090,000  Southern California Public Power
                              Auth. Rev., (Transmission),
                              5.625%, 7/1/03 (MBIA)                    3,338,930
                2,000,000  Southern California Public Power
                              Auth. Rev., 6.75%, 7/1/00                2,090,760
                3,000,000  Southern California Public Power
                              Auth. Rev., 6.75%, 7/1/01                3,183,270
                4,065,000  Southern California Rapid Transit
                              District COP, (Workers
                              Compensation), 6.20%, 7/1/02
                              (MBIA)                                   4,354,387
                5,000,000  Southern California Rapid Transit
                              District COP, (Workers
                              Compensation), 6.40%, 7/1/04
                              (MBIA)                                   5,379,800

See Notes to Financial Statements


                                                 www.americancentury.com      19


Cal. Int.-Term Tax-Free--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

             $  1,500,000  Southern California Rapid Transit
                              District COP, (Workers
                              Compensation), 6.50%, 7/1/07
                              (MBIA)                                $  1,616,595
                2,000,000  Stanislaus County COP, 5.50%,
                              5/1/06 (MBIA)                            2,191,400
                1,150,000  Taft Public Financing Auth. Lease
                              Rev. COP, Series 1997 A,
                              (Community Correctional
                              Facility), 5.50%, 1/1/06                 1,235,261
                1,510,000  Tulare County COP, 5.00%,
                              8/15/10 (MBIA)                           1,597,172
                1,950,000  University of California Rev.,
                              (University of California Medical
                              Center), 5.60%, 7/1/09
                              (AMBAC)                                  2,128,191
                2,510,000  Watsonville Hospital Insured Rev.,
                              Series 1996 A, (Watsonville
                              Community Hospital), 5.45%,
                              7/1/03 (California Mortgage
                              Insurance)(1)                            2,688,411
                3,980,000  Whittier Health Facility Rev.,
                              (Presbyterian Intercommunity),
                              6.00%, 6/1/06 (MBIA)                     4,470,535
                1,465,000  Woodland Wastewater System
                              COP, 6.00%, 3/1/06 (AMBAC)               1,647,891
                                                                   -------------
                                                                     436,296,885
                                                                   -------------
PUERTO RICO--9.0%
               14,150,000  Puerto Rico Commonwealth GO,
                              4.50%, 7/1/23                           13,019,132
                3,655,000  Puerto Rico Commonwealth GO,
                              6.00%, 7/1/16 (MBIA)                     4,202,300
                3,000,000  Puerto Rico Commonwealth
                              Highway and Transportation
                              Auth. Rev., Series 1993 X,
                              5.10%, 7/1/03 (MBIA)                     3,176,370
                3,500,000  Puerto Rico Commonwealth
                              Infrastructure Financing Auth.
                              Special Tax Rev., Series
                              1998 A, 5.50%, 7/1/08
                              (AMBAC)                                  3,884,265

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

             $  5,000,000  Puerto Rico Electric Power Auth.
                              Rev., Series 1995 W, 6.00%,
                              7/1/03 (MBIA)                         $  5,462,850
                5,790,000  Puerto Rico Electric Power Auth.
                              Rev., Series 1998 DD, 4.50%,
                              7/1/19 (FSA)                             5,518,623
                3,090,000  Puerto Rico Public Buildings Auth.
                              Rev., Series 1995 A, 6.25%,
                              7/1/09 (AMBAC)                           3,629,760
                4,500,000  Puerto Rico Public Finance Corp.,
                              Series 1998 A, 5.375%,
                              6/1/11 (AMBAC)                           4,927,770
                                                                   -------------
                                                                      43,821,070
                                                                   -------------
TOTAL MUNICIPAL SECURITIES                                           480,117,955
                                                                   -------------
   (Cost $458,492,713)

SHORT--TERM MUNICIPAL SECURITIES--1.0%
                1,600,000  California State Economic
                              Development Financing Auth.
                              Rev., Series 1998 C, VRDN,
                              3.50%, 3/1/99 (LOC: Bank of
                              America  N.T. & S.A.)                    1,600,000
                3,100,000  California Statewide Community
                              Development Auth. Rev.,
                              Floating Rate Trust Receipts,
                              2.95%, 3/3/99 (FSA) (SBBPA:
                              Bank of New York) (Acquired
                              2/16/99, Cost $3,100,000)(3)(4)          3,100,000
                                                                   -------------
TOTAL SHORT-TERM MUNICIPAL SECURITIES                                  4,700,000
                                                                   -------------
   (Cost $4,700,000)

TOTAL INVESTMENT SECURITIES--100.0%                                 $484,817,955
                                                                   =============
   (Cost $463,192,713)

                                               See Notes to Financial Statements


20      1-800-345-2021


Cal. Int.-Term Tax-Free--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

NOTES TO SCHEDULE OF INVESTMENTS

AMBAC = AMBAC Assurance Corporation

BIGI = Bond Investor's Guaranty Inc.

COP = Certificates of Participation

FGIC = Financial Guaranty Insurance Co.

FSA = Financial Security Assurance Inc.

GO = General Obligation

LOC = Letter of Credit

MBIA = MBIA Insurance Corp.

SBBPA = Standby Bond Purchase Agreement

VRDN = Variable Rate Demand Note.  Interest  reset date is indicated and used in
calculating the weighted  average  portfolio  maturity.  Rate shown is effective
February 28, 1999.

(1)  Escrowed  to  maturity  in U.S.  Government  securities  or state and local
     government securities.
(2)  Security is a zero-coupon municipal bond. The yield to maturity at purchase
     is  indicated.  Zero-coupon  securities  are  purchased  at  a  substantial
     discount from their value at maturity.
(3)  Security was purchased  under Rule 144A of the Securities Act of 1933 or is
     a private  placement,  and unless registered under the Act or exempted from
     registration,  may only be sold to qualified institutional  investors.  The
     value  of  the  security  at  February  28,  1999  was  $3,100,000,   which
     represented 0.6% of net assets.
(4)  Interest  reset date is  indicated  and used in  calculating  the  weighted
     average portfolio maturity. Rate shown is effective February 28, 1999.

- --------------------------------------------------------------------------------
UNDERSTANDING  THE  SCHEDULE  OF  INVESTMENTS--This  schedule  tells  you  which
investments your fund owned on the last day of the reporting period.

The schedule includes:

* a list of each investment

* the principal amount of each investment

* the market value of each investment

See Notes to Financial Statements


                                                 www.americancentury.com      21


California Long-Term Tax-Free--Performance
- --------------------------------------------------------------------------------

<TABLE>
TOTAL RETURNS AS OF FEBRUARY 28, 1999

                CALIFORNIA LONG-TERM   LEHMAN LONG-TERM   CALIFORNIA MUNICIPAL DEBT FUNDS(2)
                     TAX-FREE          MUNICIPAL INDEX     AVERAGE RETURN   FUND'S RANKING
<S>                 <C>            <C>                 <C>                 <C>                  
6 MONTHS(1)            2.20%               2.24%               2.09%              --
1 YEAR                 6.17%               6.40%               5.43%         10 OUT OF 107
==========================================================================================
AVERAGE ANNUAL RETURNS
==========================================================================================
3 YEARS                6.93%               7.99%               6.49%         28 OUT OF 91
5 YEARS                6.58%               7.43%               6.04%         13 OUT OF 65
10 YEARS               8.04%               9.11%               7.58%          7 OUT OF 33
</TABLE>

The fund's inception date was 11/9/83.

(1) Returns for periods less than one year are not annualized.

(2) According to Lipper Inc., an independent mutual fund ranking service.

See pages 39-40 for more information about returns,  the comparative  index, and
Lipper fund rankings.

[mountain graph - data below]

GROWTH OF $10,000 OVER 10 YEARS
Value on 2/28/99
Lehman Long-Term Municipal Index      $23,922
California Long-Term Tax-Free         $21,621

                    California
                    Long-Term         Lehman Long-Term
                     Tax-Free         Municipal Index
DATE                  VALUE                VALUE
2/28/89              $10,000              $10,000
2/28/90              $10,841              $11,108
2/28/91              $11,764              $12,141
2/29/92              $12,923              $13,521
2/28/93              $14,791              $15,730
2/28/94              $15,754              $16,716
2/28/95              $15,781              $16,876
2/29/96              $17,715              $18,996
2/28/97              $18,603              $20,170
2/28/98              $20,402              $22,483
2/28/99              $21,621              $23,922

$10,000 investment made 2/28/89

The graph at left shows the growth of a $10,000  investment  in the fund over 10
years,  while the graph below  shows the fund's  year-by-year  performance.  The
Lehman Long-Term  Municipal Bond Index is provided for comparison in each graph.
California  Long-Term  Tax-Free's total returns include operating expenses (such
as transaction  costs and management fees) that reduce returns,  while the total
returns of the index do not. Past performance does not guarantee future results.
Investment  return and principal value will fluctuate,  and redemption value may
be more or less than original cost.

[bar graph - data below]

ONE-YEAR RETURNS OVER 10 YEARS (PERIODS ENDED FEBRUARY 28)
                   California
                   Long-Term       Lehman Long-Term
                   Tax-Free         Municipal Index
DATE                RETURN             RETURN
2/28/90              8.41%             11.08%
2/28/91              8.51%              9.30%
2/29/92              9.86%             11.37%
2/28/93             14.45%             16.33%
2/28/94              6.51%              6.27%
2/28/95              0.17%              0.96%
2/29/96             12.26%             12.56%
2/28/97              5.01%              6.18%
2/28/98              9.67%             11.47%
2/28/99              6.17%              6.40%


22      1-800-345-2021


California Long-Term Tax-Free--Q&A
- --------------------------------------------------------------------------------
/photo of Dave MacEwen/

     An  interview  with Dave  MacEwen,  a portfolio  manager on the  California
Tax-Free and Municipal funds investment team.

HOW DID THE FUND PERFORM DURING THE SIX MONTHS ENDED FEBRUARY 28, 1999?

     California  Long-Term  Tax-Free  posted a total return of 2.20%,  which was
better than the 2.09%  average total return of its peer  group--108  "California
Municipal  Debt Funds"  tracked by Lipper Inc.  (See the previous page for other
fund performance comparisons.)

       The fund also  produced  more  tax-free  income  than its peers did.  The
fund's  30-day SEC yield as of  February 28 was 4.17%,  compared  with the 3.75%
yield of the average California municipal fund, according to Lipper.

WHAT WAS YOUR INVESTMENT APPROACH DURING THE PERIOD?

     Given our view that  interest  rates would  decline due to global  economic
weakness, we kept California Long-Term Tax-Free's duration a bit longer than the
average  duration of its  benchmark  (a group of funds with  similar  investment
objectives).  Duration measures how sensitive a fund's share price is to changes
in interest rates. (The longer a fund's duration,  the more the share price will
rise or fall when rates change.)

     Having a slightly  longer-than-average  duration  was a plus for the fund's
performance during periods when interest rates declined--such as last autumn and
in January--but  detracted from performance when rates were on the upswing, like
they were in February.  Although we make small  adjustments to duration based on
our interest rate  expectations,  we generally keep the fund's duration within a
year of the duration of California Long-Term Tax-Free's benchmark.

     Our expectations of lower interest rates also led us to emphasize  discount
bonds--bonds that trade below their face value.

WHY DO FALLING INTEREST RATES FAVOR DISCOUNT BONDS?

     Discount  bonds  typically  perform  best when  rates are  falling  because
municipal bond issuers often "call" outstanding bonds. Calling essentially means
that municipalities  refinance their debt at lower rates, similar to what occurs
when homeowners  refinance home  mortgages.  Because the  coupons--the  interest
rates issuers  promise to pay --on discount  bonds are below  prevailing  rates,
there is less  incentive  for  issuers  to  refinance  them.  As a  result,  the
durations of discount  bonds remain long, so they generate more price gains when
rates fall.

     Conversely,  rising interest rates tend to hurt discount  bonds.  Investors
become less  worried  that bonds will be called and are less willing to pay more
for the call protection that discount bonds provide. The focus on discount bonds
served us well during  periods when rates were falling but  detracted  from fund
performance  when rates rose.  Because of unexpectedly  strong economic  growth,
there was more of the latter than we expected.

[right margin]

"WE KEPT CALIFORNIA LONG-TERM TAX-FREE'S DURATION A BIT LONGER THAN THE AVERAGE
DURATION OF ITS BENCHMARK."

YIELDS AS OF FEBRUARY 28, 1999

  30-DAY SEC YIELD                4.17%

  30-DAY TAX-EQUIVALENT YIELDS
    34.70% TAX BRACKET            6.39%
    37.42% TAX BRACKET            6.66%
    41.95% TAX BRACKET            7.18%
    45.22% TAX BRACKET            7.61%

PORTFOLIO AT A GLANCE
                            2/28/99           8/31/98
NUMBER OF SECURITIES          84                83
WEIGHTED AVERAGE
  MATURITY                 20.0 YRS          19.5 YRS
AVERAGE DURATION            8.7 YRS           8.7 YRS
EXPENSE RATIO               0.51%*             0.51%

* Annualized.

Investment terms are defined in the Glossary on page 40.


                                                 www.americancentury.com      23


California Long-Term Tax-Free--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

THE DIFFERENCE IN YIELD--OR THE "SPREAD"  --BETWEEN  SECURITIES  WITH HIGHER AND
LOWER CREDIT QUALITY REMAINED HISTORICALLY NARROW DURING THE PAST SIX MONTHS.
HOW DID THAT AFFECT YOUR INVESTMENT APPROACH?

     Narrow yield  spreads  between  bonds with higher and lower credit  quality
justified our focus on  relatively  high-quality  securities.  By the end of the
period,  60% of the fund's  assets  were  invested  in the  highest-quality  AAA
bonds--many of them  insured--with the remainder  invested in bonds with ratings
of BBB or higher. History tells us that under normal conditions,  investors tend
to be rewarded  with anywhere  from 30 to 80 basis points  (0.30-0.80%--a  basis
point equals 0.01%) more yield for owning a BBB  California  municipal  security
instead of a AAA security.  That extra yield is compensation  for the added risk
that the issuer will be unable to make timely interest and principal payments.

     Throughout much of the period,  however,  BBB securities offered only about
35 basis points more yield than AAA insured bonds.  Even in the  highest-quality
tiers of the California municipal market, spreads were very tight. At one point,
for example,  the yield difference between an insured bond and an uninsured bond
from the same issuer was just 1 basis point.

     The narrow spreads were a direct result of diminished supply of lower-rated
bonds and strong demand for  securities  with higher  yields.  As municipal bond
insurance became more prevalent, there were fewer lower-quality bonds available.
Also curtailing supply were credit upgrades resulting from the strong fiscal and
economic condition of many California  issuers.  In light of the state's ongoing
economic  strength,  investors didn't demand much more yield from  lower-quality
bonds because they felt the additional risks of owning them were minimal.

     From a  demand  standpoint,  investors  increasingly  sought  lower-quality
securities for additional  yield in a falling rate  environment.  Reduced supply
and  firm   demand   caused   lower-quality   municipal   bonds  to   outperform
higher-quality  securities  throughout the period.  In our minds,  however,  the
small  incremental  yield  lower-quality  securities  offered wasn't adequate to
override their added credit risk.

WHAT'S YOUR OUTLOOK FOR INTEREST RATES?

     In our view,  interest rates could resume their decline this year, although
we wouldn't be  surprised  to see them  temporarily  drift  higher as  investors
digest news about strong  growth and low  unemployment.  While the U.S.  economy
grew  much  faster  than  expected  in the  fourth  quarter  of  last  year  and
unemployment hit 29-year lows, inflation remained in check.

     Continued low inflation  owed much to slowing  economies in the rest of the
world.  Many  Asian  countries  are  struggling  through  recessions,  with some
teetering  toward  depression.  Parts of Latin  America  have  also  come  under
pressure  as they deal with high  inflation,  unstable  currencies,  and slowing
economies.  In  addition,  Europe  shows  signs of slowing  down in  reaction to
problems  encountered with the introduction of the continent's unified currency,
the euro.

[left margin]

"NARROW YIELD SPREADS BETWEEN BONDS WITH HIGHER AND LOWER CREDIT QUALITY
JUSTIFIED OUR FOCUS ON RELATIVELY HIGH-QUALITY SECURITIES. BY THE END OF THE
PERIOD, 60% OF THE FUND'S ASSETS WERE INVESTED IN THE HIGHEST-QUALITY AAA
BONDS."

PORTFOLIO COMPOSITION BY
CREDIT RATING
              % OF FUND INVESTMENTS
             AS OF             AS OF
            2/28/99           8/31/98
AAA          60%                53%
AA            9%                11%
A            26%                30%
BBB           5%                 6%

Ratings provided by Standard & Poor's.  See Credit Rating  Guidelines on page 39
for more information.


24      1-800-345-2021


California Long-Term Tax-Free--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

     With  such  anemic  growth  overseas,  we're  likely to see  excess  global
capacity  for all  types of goods  and  services,  and  practically  no  pricing
pressures  as a  result.  Combine  that  with  increasing  productivity  due  to
technological  improvements,  and it appears  unlikely that  inflation will be a
problem any time soon.

WHAT DOES THAT OUTLOOK MEAN FOR THE MUNICIPAL MARKET?

     Continued low inflation and declining  interest rates would  certainly help
boost the market.  But supply and demand will also influence the  performance of
municipal  bonds.  Municipals   underperformed  Treasurys  when  interest  rates
declined last year,  mainly  because of the surge in demand for  Treasurys  from
overseas investors,  while municipals languished from too much supply. So far in
1999, however, we've already seen signs that the supply of California municipals
is tapering off and demand has firmed,  which we believe could set the stage for
lower municipal yields. On the demand side, the relative cheapness of municipals
compared with Treasurys may attract investors who want tax-free income.

WITH  THIS  OUTLOOK  IN MIND,  WHAT  ARE YOUR  PLANS  FOR  CALIFORNIA  LONG-TERM
TAX-FREE?

     We will probably keep the portfolio's duration a bit long compared with the
average California  municipal fund as long as we believe that interest rates are
poised to move lower. That should be positive for fund returns if municipal bond
yields decline, as we expect they will.

     We'll also  continue to focus on  high-quality  bonds.  This  reflects  our
belief  that  credit  spreads  are about as narrow as they're  going to get.  We
expect to see credit spreads widen back out at some point going forward. If that
happens,  our higher-rated bonds will more than likely outperform  lower-quality
ones.

     In addition, we'll continue to emphasize call-protected securities--such as
discount bonds and  non-callable  bonds --because we believe that unwanted calls
continue to be an important concern.

     And, finally,  we will continue to monitor the California  municipal market
to uncover  securities that we believe offer good relative values and attractive
yields.

[right margin]

"WE'VE ALREADY SEEN SIGNS THAT THE SUPPLY OF CALIFORNIA MUNICIPALS IS TAPERING
OFF AND DEMAND HAS FIRMED, WHICH WE BELIEVE COULD SET THE STAGE FOR LOWER
MUNICIPAL YIELDS."

TOP FIVE SECTORS (AS OF 2/28/99)
                            % OF FUND INVESTMENTS
COPS/LEASES                           21%
TAX ALLOCATION REVENUE                14%
GO                                    11%
HIGHER EDUCATION                       7%
HOSPITAL REVENUE                       7%

TOP FIVE SECTORS (AS OF 8/31/98)
                            % OF FUND INVESTMENTS
COPS/LEASES                           23%
WATER AND SEWER REVENUE               12%
TAX ALLOCATION REVENUE                12%
ELECTRIC REVENUE                      10%
HOSPITAL REVENUE                       8%

Security types are defined on pages 40-41.


                                                 www.americancentury.com      25


Cal. Long-Term Tax-Free--Schedule of Investments
- --------------------------------------------------------------------------------

FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

MUNICIPAL SECURITIES--98.4%
CALIFORNIA--95.8%
             $  2,300,000  Alameda County COP, 6.80%,
                              6/15/17 (MBIA)(1)                     $    917,447
                2,700,000  Brea Public Financing Auth. Rev.,
                              (Project Area AB), 7.00%,
                              8/1/15 (MBIA)                            2,955,582
                1,220,000  Brea Redevelopment Agency Tax
                              Allocation, (Project AB),
                              6.125%, 8/1/13 (MBIA)                    1,343,952
                5,000,000  California Educational Facilities
                              Auth. Rev., (California Institute
                              of Technology), 4.25%,
                              10/1/28                                  4,406,150
                9,000,000  California Educational Facilities
                              Auth. Rev., (California Institute
                              of Technology), 4.50%,
                              10/1/27                                  8,286,750
                1,500,000  California Educational Facilities
                              Auth. Rev., Series 1997 B,
                              (Pooled College and University
                              Projects), 6.30%, 4/1/21                 1,625,025
                7,000,000  California Educational Facilities
                              Auth. Rev., Series 1997 M,
                              (Stanford University), 5.25%,
                              12/1/26                                  7,114,380
                7,000,000  California Educational Facilities
                              Auth. Rev., Series 1997 N,
                              (Stanford University), 5.20%,
                              12/1/27                                  7,130,970
                4,000,000  California Health Facilities
                              Financing Auth. Rev., (Kaiser
                              Permanente), 7.00%, 10/1/99,
                              Prerefunded at 102% of Par(2)            4,176,360
                3,000,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1989 A, (Kaiser Permanente),
                              7.15%, 10/1/09(1)                        1,887,630
                1,500,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1988 A, (H.M. Newhall
                              Memorial Hospital), 8.00%,
                              10/1/18 (California Mortgage
                              Insurance)                               1,535,520
                1,730,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1990 A, (Gould Medical),
                              7.30%, 4/1/20(2)                         1,845,374
                2,500,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1991 B, (Adventist Health),
                              6.75%, 3/1/14 (MBIA)                     2,693,450
                2,000,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1992 A, 6.75%, 3/1/20
                              (California Mortgage Insurance)          2,170,820

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

             $  1,290,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1992 C, (AIDS Healthcare
                              Foundation), 6.25%, 9/1/17
                              (California Mortgage Insurance)       $  1,369,632
                5,165,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1993 C, (St. Francis Memorial
                              Hospital), 5.875%, 11/1/23(2)            5,765,070
                1,290,000  California Housing Finance
                              Agency Rev., (Multi-Unit Rental
                              Housing), 6.875%, 2/1/22                 1,320,638
                5,125,000  California Housing Finance
                              Agency Rev., Series 1994 G,
                              (Home Mortgage), 7.25%,
                              8/1/17                                   5,544,276
                1,125,000  California Housing Finance
                              Agency Rev., Series 1995 C,
                              (Home Mortgage), 6.80%,
                              8/1/17                                   1,213,819
                1,500,000  California Pollution Control
                              Financing Auth. Rev., Series
                              1987 D, (Southern California
                              Edison), 6.85%, 12/1/08                  1,553,670
                3,000,000  California Public Works Board
                              Lease Rev., Series 1997 A,
                              (California Science Center),
                              5.25%, 10/1/22                           3,037,560
                1,000,000  California State Franchise Tax
                              Board COP, 6.90%, 10/1/99,
                              Prerefunded at 102% of Par(2)            1,043,500
                8,000,000  California State GO, 4.25%,
                              10/1/26 (MBIA)                           7,112,240
                4,655,000  California State GO, 4.50%,
                              12/1/24 (FGIC)                           4,322,773
                3,000,000  California State GO, 6.125%,
                              10/1/11 (AMBAC)                          3,513,720
                1,410,000  California State GO, Series
                              1984 B, (New Prison
                              Construction), 10.00%, 8/1/03            1,768,887
               17,100,000  California State Public Works
                              Board Lease Rev. COP, Series
                              1993 D, (Department of
                              Corrections State Prisons),
                              5.25%, 6/1/15 (FSA)                     18,149,769
                9,000,000  California Statewide Community
                              Development Auth. Rev., Series
                              1998 A, (Sherman Oaks),
                              5.00%, 8/1/22 (AMBAC,
                              California Mortgage Insurance)           9,080,370
                5,695,000  Capistrano School District Special
                              Tax, (Refunding Issue 1988-1),
                              6.50%, 9/1/14 (FSA)                      6,553,066
                1,000,000  Coachella Valley Water
                              District #71 COP, (Flood
                              Control), 6.75%, 10/1/02,
                              Prerefunded at 102% of Par(2)            1,126,380

See Notes to Financial Statements


26      1-800-345-2021


Cal. Long-Term Tax-Free--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

             $  1,320,000  Coalinga Public Financing Auth.
                              Local Obligation Rev., Series
                              1998 A, 6.375%, 9/15/21
                              (AMBAC)                               $  1,584,964
               13,500,000  Compton Redevelopment Agency
                              Tax Allocation, Series 1995 A,
                              6.50%, 8/1/13 (FSA)                     15,493,680
                2,580,000  Concord Joint Power Financing
                              Auth. Lease Rev. COP, (Police
                              Facilities), 5.25%, 8/1/13               2,737,122
                3,605,000  Inglewood Redevelopment
                              Agency Tax Allocation, Series
                              1998 A, (Merged
                              Redevelopment), 5.25%,
                              5/1/23 (AMBAC)                           3,758,825
                1,815,000  Kern County High School District
                           GO, 7.15%, 8/1/14 (MBIA)(2)                 2,303,435
                1,305,000  Los Altos Association of Bay Area
                              Governments COP, 5.90%,
                              5/1/27                                   1,378,641
                3,475,000  Los Angeles Community
                              Redevelopment Agency
                              Housing Rev., Series 1994 A,
                              6.45%, 7/1/17 (AMBAC)                    3,707,860
                2,000,000  Los Angeles County Metropolitan
                              Transportation Auth. Sales Tax
                              Rev., Series 1996 A, 6.00%,
                              7/1/23 (MBIA)                            2,175,980
                3,000,000  Los Angeles County
                              Transportation Commission
                              Sales Tax Rev., Series 1987 A,
                              7.40%, 7/1/15                            3,103,920
                4,050,000  Los Angeles County
                              Transportation Commission
                              Sales Tax Rev., Series 1989 A,
                              (Capital Appreciation), 7.20%,
                              7/1/02 (MBIA)(1)                         3,335,540
                3,340,000  Los Angeles Department of Water
                              and Power Waterworks Rev.,
                              4.50%, 10/15/24                          3,084,123
                1,000,000  Los Angeles Transportation
                              Commission Sales Tax Rev.,
                              6.50%, 7/1/13 (MBIA)                     1,082,460
                2,410,000  Los Angeles Wastewater System 
                              Rev., Series 1991 C,
                              6.90%, 6/1/99, Prerefunded at 102%
                              of Par(2)                                2,483,409
                3,050,000  Los Angeles Wastewater System
                              Rev., Series 1991 C, 7.10%,
                              6/1/99, Prerefunded at 102%
                              of Par(2)                                3,144,459
                1,865,000  Mendocino Coast District Health
                              Care Facility Rev., 5.875%,
                              2/1/20 (California Mortgage
                              Insurance)                               1,982,010

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

             $  8,000,000  Metropolitan Water District of
                              Southern California Waterworks
                              Rev., 5.75%, 8/10/18                  $  8,899,360
                5,150,000  Mid-Peninsula Regional Open
                              Space District GO, 7.00%,
                              9/1/14                                   5,930,946
                5,830,000  Modesto, Stockton, Redding
                              Public Power Agency Rev.,
                              Series 1989 D, (San Juan),
                              6.75%, 7/1/20 (MBIA)                     7,098,491
                3,000,000  Oakland Redevelopment Agency
                              Tax Allocation, (Central District
                              Redevelopment Tax), 5.50%,
                              2/1/14 (AMBAC)                           3,280,680
                1,855,000  Pacifica Financing Auth. Sewer
                              Rev., 6.20%, 8/1/26                      1,913,284
                2,950,000  Pasadena COP, (Old Pasadena
                              Parking Facility), 6.25%,
                              1/1/18                                   3,405,156
                5,000,000  Pittsburg Redevelopment Agency
                              Tax Allocation, (Los Medanos
                              Community Development),
                              6.25%, 8/1/26                            5,467,850
                4,475,000  Pittsburg Redevelopment Agency
                              Tax Allocation, (Los Medanos
                              Community Development),
                              6.20%, 8/1/19                            4,881,733
                2,700,000  Pittsburg Redevelopment Agency
                              Tax Allocation, Series 1993 B,
                              (Los Medanos Community
                              Development), 5.80%, 8/1/34
                              (FSA)                                    2,980,017
                2,100,000  Pomona Public Financing Auth.
                              Rev., Series 1992 A, (Water
                              Treatment), 6.10%, 7/1/17
                              (AMBAC)                                  2,282,175
                5,680,000  Riverside County Asset Leasing
                              Corporation Rev. COP, Series
                              1997 B, (Riverside County
                              Hospital), 5.00%, 6/1/19
                              (MBIA)                                   5,604,797
                8,705,000  Sacramento Municipal Utility
                              District Electric Rev., Series
                              1997 K, 5.25%, 7/1/24
                              (AMBAC)                                  9,111,524
                1,000,000  Saddleback Valley Unified School
                              District Public Financing Auth.
                              Special Tax Rev., Series 1997 A,
                              6.00%, 9/1/16 (FSA)                      1,144,270
                2,000,000  San Diego County COP,
                              (Downtown Courthouse), 4.50%,
                              5/1/23 (AMBAC)                           1,859,140
                3,400,000  San Diego County COP, 5.625%,
                              9/1/12 (AMBAC)                           3,772,810
                3,500,000  San Diego County Regional
                              Transportation Sales Tax Rev.,
                              Series 1991 A, 6.93%,
                              4/1/04(1)(2)                             2,883,160

See Notes to Financial Statements


                                                 www.americancentury.com      27


Cal. Long-Term Tax-Free--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

              $10,450,000  San Francisco City and County
                              Airport Commission
                              International Airport Rev.,
                              Issue 20, 4.50%, 5/1/26
                              (MBIA)                                $  9,684,642
                1,000,000  San Francisco City and County
                              Redevelopment Hotel Tax Rev.,
                              6.75%, 7/1/04, Prerefunded
                              at 102% of Par (FSA)(2)                  1,167,110
                3,000,000  San Jose Financing Auth. Rev.
                              COP, Series 1993 C,
                              (Convention Center), 6.375%,
                              9/1/13                                   3,185,550
                7,575,000  San Jose Financing Auth. Rev.
                              COP, Series 1993 D, (Central
                              Service Yard), 5.25%,
                              10/15/23                                 7,665,446
                9,525,000  San Jose Redevelopment
                              Agency Tax Allocation, Series
                              1993 D, (Merged Area
                              Redevelopment), 5.75%,
                              8/1/24                                  10,078,688
                5,000,000  San Marino Unified School
                              District GO, Series 1998 B,
                              5.00%, 6/1/23                            5,038,250
                3,475,000  San Mateo County Joint Powers
                              Finance Auth. Lease Rev. COP,
                              (Capital Projects Program),
                              6.50%, 7/1/16 (MBIA)                     4,176,394
                4,000,000  San Mateo County Joint Powers
                              Finance Auth. Lease Rev. COP,
                              (Capital Projects Program),
                              6.00%, 7/1/19 (MBIA)                     4,581,960
                3,500,000  Santa Ana Finance Auth. Lease
                              Rev. COP, 6.25%, 7/1/15
                              (MBIA)                                   4,111,660
                4,830,000  Santa Monica Community
                              College District COP, Series
                              1997 A, 5.90%, 2/1/27                    5,180,465
                3,730,000  Southern California Public Power
                              Auth. Rev., (Multipurpose),
                              6.75%, 7/1/13 (FSA)                      4,589,652
                1,425,000  Southern California Public Power
                              Auth. Rev., (Transportation
                              Auth.), 7.00%, 7/1/09                    1,516,798
                3,260,000  Southern California Public Power
                              Auth. Rev., 6.00%, 7/1/18                3,325,362
                7,315,000  Southern California Public Power
                              Auth. Rev., 6.75%, 7/1/12
                              (FSA)                                    8,998,181
                3,000,000  Southern California Public Power
                              Auth. Rev., Series 1989 A,
                              7.15%, 7/1/04 (AMBAC)(1)                 2,438,280

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

             $  2,000,000  Southern Orange County Finance
                              Auth. Special Tax Rev., Series
                              1994 A, 7.00%, 9/1/11
                              (MBIA)                                $  2,508,400
                  800,000  Stockton Health Facilities Rev.,
                              Series 1997 A, (Dameron
                              Hospital Association), 5.70%,
                              12/1/14                                    815,400
                2,000,000  Taft Public Financing Auth. Lease
                              Rev. COP, Series 1997 A,
                              (Community Correctional
                              Facility), 6.05%, 1/1/17                 2,126,260
                1,400,000  Torrance Redevelopment Agency
                              Rev., Series 1998 A,
                              (Downtown Redevelopment),
                              5.60%, 9/1/28                            1,408,847
                3,020,000  Watsonville Insured Hospital Rev.,
                              Series 1996 A, (Watsonville
                              Community Hospital), 6.20%,
                              7/1/12 (California Mortgage
                              Insurance)                               3,501,176
                                                                   -------------
                                                                     328,535,122
                                                                   -------------
PUERTO RICO--2.6%
                9,750,000  Puerto Rico Commonwealth GO,
                              4.50%, 7/1/23                            8,970,780
                                                                   -------------
TOTAL MUNICIPAL SECURITIES                                           337,505,902
                                                                   -------------
   (Cost $315,005,970)

MUNICIPAL DERIVATIVES--1.2%
                4,000,000  Northern California Transmission
                              Rev., Inverse Floater, 6.78%,
                              4/29/24 (MBIA)(3)                        4,250,000
                                                                   -------------
   (Cost $3,963,920)

SHORT--TERM MUNICIPAL SECURITIES--0.4%
                1,200,000  California State Economic
                              Development Financing Auth.
                              Rev., Series 1998 B, (California
                              Independent System), VRDN,
                              3.00%, 3/1/99 (LOC: Bank of
                              America N.T. & S.A.)                     1,200,000
                                                                   -------------
   (Cost $1,200,000)

TOTAL INVESTMENT SECURITIES--100.0%                                 $342,955,902
                                                                   =============
   (Cost $320,169,890)

                                               See Notes to Financial Statements


28      1-800-345-2021


Cal. Long-Term Tax-Free--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)

FEBRUARY 28, 1999 (UNAUDITED)

NOTES TO SCHEDULE OF INVESTMENTS

AMBAC = AMBAC Assurance Corporation

COP = Certificates of Participation

FGIC = Financial Guaranty Insurance Co.

FSA = Financial Security Assurance Inc.

GO = General Obligation

LOC = Letter of Credit

MBIA = MBIA Insurance Corp.

VRDN = Variable Rate Demand Note.  Interest  reset date is indicated and used in
calculating the weighted  average  portfolio  maturity.  Rate shown is effective
February 28, 1999.

(1)  Security is a zero-coupon municipal bond. The yield to maturity at purchase
     is  indicated.  Zero-coupon  securities  are  purchased  at  a  substantial
     discount from their value at maturity.
(2)  Escrowed  to  maturity  in U.S.  Government  securities  or state and local
     government securities.
(3)  Inverse  floaters  have  interest  rates  which  move  inversely  to market
     interest rates.  Inverse floaters typically have durations which are longer
     than long-term bonds,  which may cause their value to be more volatile than
     long-term bonds when interest rates change.

- --------------------------------------------------------------------------------
UNDERSTANDING  THE  SCHEDULE  OF  INVESTMENTS--This  schedule  tells  you  which
investments your fund owned on the last day of the reporting period.

The schedule includes:

* a list of each investment

* the principal amount of each investment

* the market value of each investment

See Notes to Financial Statements


                                                 www.americancentury.com      29


<TABLE>
<CAPTION>
Statements of Assets and Liabilities
- --------------------------------------------------------------------------------

FEBRUARY 28, 1999 (UNAUDITED)
                                           LIMITED-TERM    INTERMEDIATE-TERM     LONG-TERM
                                              TAX-FREE          TAX-FREE          TAX-FREE
ASSETS
<S>                                             <C>            <C>               <C>    
Investment securities, at value
  (identified cost of $147,846,249,
  $463,192,713 and $320,169,890,
  respectively) (Note 3) .................$ 151,167,663    $ 484,817,955   $ 342,955,902
Cash .....................................      178,935        1,925,660         905,300
Investment in affiliated money
  market fund (Note 2) ...................        7,751           10,117           7,247
Receivable for investments sold ..........         --               --         2,392,375
Interest receivable ......................    2,041,623        7,350,653       4,213,937
                                          -------------    -------------   -------------
                                            153,395,972      494,104,385     350,474,761
                                          -------------    -------------   -------------

LIABILITIES
Disbursements in excess
  of demand deposit cash .................        4,691          174,193         193,606
Payable for investments purchased ........    2,090,411        3,101,135       1,357,077
Payable for capital shares redeemed ......      192,870          349,354         577,788
Accrued management fees (Note 2) .........       58,938          189,546         134,787
Dividends payable ........................       45,802          152,556         115,757
Payable for trustees' fees and expenses ..          351            1,129             803
                                          -------------    -------------   -------------
                                              2,393,063        3,967,913       2,379,818
                                          -------------    -------------   -------------
Net Assets ...............................$ 151,002,909    $ 490,136,472   $ 348,094,943
                                          =============    =============   =============

CAPITAL SHARES
Outstanding (unlimited number
  of shares authorized) ..................   14,417,441       43,428,999      30,011,032
                                          =============    =============   =============
Net Asset Value Per Share ................$       10.47    $       11.29   $       11.60
                                          =============    =============   =============

NET ASSETS CONSIST OF:
Capital paid in ..........................$ 148,083,551    $ 467,628,350   $ 324,712,514
Accumulated undistributed net
  realized gain (loss) on investments ....     (402,056)         882,880         596,417
Net unrealized appreciation
  on investments (Note 3) ................    3,321,414       21,625,242      22,786,012
                                          -------------    -------------   -------------
                                          $ 151,002,909    $ 490,136,472   $ 348,094,943
                                          =============    =============   =============
</TABLE>

- --------------------------------------------------------------------------------
UNDERSTANDING THE STATEMENTS OF ASSETS AND  LIABILITIES--This  statement details
what the fund owns (assets),  what it owes (liabilities),  and its net assets as
of the last day of the period.  If you subtract  what the fund owes from what it
owns, you get the fund's net assets.  The net assets divided by the total number
of shares  outstanding  gives you the price of an individual  share,  or the net
asset value per share.

NET ASSETS are also broken down by capital (money invested by shareholders); net
gains earned on investments  but not yet paid to  shareholders  or net losses on
investments (known as realized gains or losses); and finally, gains or losses on
securities  still  owned  by the  fund  (known  as  unrealized  appreciation  or
depreciation).  This  breakdown  tells  you the  value  of net  assets  that are
performance-related,  such as investment  gains or losses,  and the value of net
assets that are not related to performance,  such as shareholder investments and
redemptions.

                                               See Notes to Financial Statements


30      1-800-345-2021


<TABLE>
<CAPTION>
Statements of Operations
- --------------------------------------------------------------------------------

FOR THE SIX MONTHS ENDED FEBRUARY 28, 1999 (UNAUDITED)

                                        LIMITED-TERM  INTERMEDIATE-       LONG-TERM
                                            TAX-FREE  TERM TAX-FREE        TAX-FREE
INVESTMENT INCOME
Income:
<S>                                     <C>            <C>             <C>         
Interest ............................   $  3,186,794   $ 11,605,811    $  8,998,028
                                        ------------   ------------    ------------
Expenses (Note 2):
Management fees .....................        376,544      1,195,017         849,802
Trustees' fees and expenses .........          3,301          8,276           6,170
                                        ------------   ------------    ------------
                                             379,845      1,203,293         855,972
                                        ------------   ------------    ------------
Net investment income ...............      2,806,949     10,402,518       8,142,056
                                        ------------   ------------    ------------

REALIZED AND UNREALIZED
GAIN (LOSS) ON INVESTMENTS
(NOTE 3)
Net realized gain on investments ....        178,503      3,132,169       1,681,833
Change in net unrealized
  appreciation on investments .......        483,135     (2,058,696)     (2,512,870)
                                        ------------   ------------    ------------
Net realized and unrealized
  gain (loss) on investments ........        661,638      1,073,473        (831,037)
                                        ------------   ------------    ------------
Net Increase in Net Assets
  Resulting from Operations .........   $  3,468,587   $ 11,475,991    $  7,311,019
                                        ============   ============    ============
</TABLE>

- --------------------------------------------------------------------------------
UNDERSTANDING THE STATEMENTS OF OPERATIONS--This  statement breaks down how each
fund's  net  assets  changed  during  the  period  as a  result  of  the  fund's
operations.  It tells you how much money the fund made or lost after taking into
account income,  fees and expenses,  and investment gains or losses. It does not
include shareholder transactions and distributions.

Fund OPERATIONS include:

* income earned from investments

* management fees and other expenses

* gains or losses from selling investments (known as realized gains or losses)

* gains or losses on current fund holdings (known as unrealized appreciation or
  depreciation)

See Notes to Financial Statements


                                                 www.americancentury.com      31


<TABLE>
<CAPTION>
Statements of Changes in Net Assets
- --------------------------------------------------------------------------------

SIX MONTHS ENDED FEBRUARY 28, 1999 (UNAUDITED) AND YEAR ENDED AUGUST 31, 1998

                                        LIMITED-TERM                   INTERMEDIATE-TERM                    LONG-TERM
                                          TAX-FREE                         TAX-FREE                          TAX-FREE
Increase in Net Assets              1999           1998              1999            1998               1999          1998

OPERATIONS
<S>                           <C>              <C>              <C>              <C>              <C>              <C>          
Net investment income ........$   2,806,949    $   5,160,591    $  10,402,518    $  20,402,484    $   8,142,056    $  15,874,999
Net realized gain
  on investments .............      178,503          253,098        3,132,169        3,919,772        1,681,833        2,963,978
Change in net unrealized
  appreciation on
  investments ................      483,135        1,302,650       (2,058,696)       5,632,637       (2,512,870)       8,929,558
                              -------------    -------------    -------------    -------------    -------------    -------------
Net increase in net assets
  resulting from operations ..    3,468,587        6,716,339       11,475,991       29,954,893        7,311,019       27,768,535
                              -------------    -------------    -------------    -------------    -------------    -------------

DISTRIBUTIONS TO
SHAREHOLDERS
From net investment income ...   (2,806,949)      (5,160,591)     (10,410,538)     (20,402,484)      (8,151,089)     (15,874,999)
From net realized gains on
  investment transactions ....         --               --         (4,848,583)      (5,651,243)      (2,740,719)      (5,354,293)
                              -------------    -------------    -------------    -------------    -------------    -------------
Decrease in net assets
  from distributions .........   (2,806,949)      (5,160,591)     (15,259,121)     (26,053,727)     (10,891,808)     (21,229,292)
                              -------------    -------------    -------------    -------------    -------------    -------------

CAPITAL SHARE
TRANSACTIONS
Proceeds from shares sold ....   43,745,487       43,612,098       85,940,777      155,826,396       72,766,847       98,878,179
Proceeds from reinvestment
  of distributions ...........    1,818,189        3,439,775       11,516,286       19,653,179        7,590,445       14,613,846
Payments for shares
  redeemed ...................  (25,358,992)     (45,102,215)     (64,141,300)    (154,216,741)     (53,875,216)     (99,508,180)
                              -------------    -------------    -------------    -------------    -------------    -------------
Net increase in net assets
  from capital share
  transactions ...............   20,204,684        1,949,658       33,315,763       21,262,834       26,482,076       13,983,845
                              -------------    -------------    -------------    -------------    -------------    -------------
Net increase in net assets ...   20,866,322        3,505,406       29,532,633       25,164,000       22,901,287       20,523,088

NET ASSETS
Beginning of period ..........  130,136,587      126,631,181      460,603,839      435,439,839      325,193,656      304,670,568
                              -------------    -------------    -------------    -------------    -------------    -------------
End of period ................$ 151,002,909    $ 130,136,587    $ 490,136,472    $ 460,603,839    $ 348,094,943    $ 325,193,656
                              =============    =============    =============    =============    =============    =============
Undistributed net
  investment income ..........         --               --               --      $       8,020             --      $       9,033
                              =============    =============    =============    =============    =============    =============

TRANSACTIONS IN
SHARES OF THE FUNDS
Sold .........................    4,183,233        4,214,707        7,542,848       13,806,443        6,217,969        8,544,372
Issued in reinvestment
  of distributions ...........      173,605          332,197        1,012,547        1,741,245          648,056        1,262,693
Redeemed .....................   (2,420,920)      (4,357,987)      (5,632,838)     (13,662,495)      (4,597,761)      (8,606,849)
                              -------------    -------------    -------------    -------------    -------------    -------------
Net increase .................    1,935,918          188,917        2,922,557        1,885,193        2,268,264        1,200,216
                              =============    =============    =============    =============    =============    =============
</TABLE>

- --------------------------------------------------------------------------------
UNDERSTANDING THE STATEMENTS OF CHANGES IN NET ASSETS--These statements show how
each fund's net assets changed over the past two reporting  periods.  It details
how much a fund grew or shrank as a result of:

* operations--a summary of the Statement of Operations from the previous page
for the most recent period

* distributions--income and gains distributed to shareholders

* share transactions--shareholders' purchases, reinvestments, and redemptions

Net  assets  at the  beginning  of  the  period  plus  the  sum  of  operations,
distributions  to  shareholders  and capital  share  transactions  result in net
assets at the end of the period.

                                               See Notes to Financial Statements


32      1-800-345-2021


Notes to Financial Statements
- --------------------------------------------------------------------------------

FEBRUARY 28, 1999 (UNAUDITED)

1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     ORGANIZATION -- American  Century  California  Tax-Free and Municipal Funds
(the  trust)  is  registered  under  the  Investment  Company  Act of 1940 as an
open-end management  investment company.  California  Limited-Term Tax-Free Fund
(Limited-Term),  California Intermediate-Term Tax-Free Fund (Intermediate-Term),
and California  Long-Term Tax-Free Fund (Long-Term) (the funds) are three of the
seven funds issued by the trust.  Each fund is  diversified  under the 1940 Act.
The funds seek to obtain as high a level of interest  income exempt from federal
and California income taxes as is consistent with prudent investment  management
and  conservation  of  shareholders'  capital.  The funds  invest  primarily  in
municipal obligations with maturities based on each fund's investment objective.
The funds concentrate their investments in a single state and therefore may have
more exposure to credit risk related to the state of California than a fund with
a broader geographical  diversification.  The following  significant  accounting
policies are in accordance with generally accepted accounting principles;  these
principles may require the use of estimates by fund management.

     SECURITY VALUATIONS -- Portfolio securities are valued through a commercial
pricing  service or at the mean of the most  recent bid and asked  prices.  When
valuations  are not readily  available,  securities  are valued at fair value as
determined in accordance with procedures adopted by the Board of Trustees.

     SECURITY  TRANSACTIONS -- Security transactions are accounted for as of the
trade date. Net realized gains and losses are determined on the identified  cost
basis, which is also used for federal income tax purposes.

     INVESTMENT  INCOME -- Interest  income is recorded on the accrual basis and
includes accretion of discounts and amortization of premiums.

     INCOME  TAX  STATUS  -- It is the  funds'  policy  to  distribute  all  net
investment  income  and net  realized  gains to  shareholders  and to  otherwise
qualify as a regulated  investment  company under the provisions of the Internal
Revenue  Code.  Accordingly,  no  provision  has been made for  federal or state
income taxes.

     DISTRIBUTIONS TO SHAREHOLDERS  --Distributions  from net investment  income
for the funds are declared daily and distributed monthly. Distributions from net
realized gains for the funds are declared and paid annually.

     At August 31, 1998,  accumulated  net realized  capital loss  carryovers of
$580,559 for  Limited-Term  (expiring  2003 through  2004) may be used to offset
future taxable gains.

     The  character of  distributions  made during the year from net  investment
income or net realized gains may differ from their ultimate characterization for
federal income tax purposes.  These differences  reflect the differing character
of certain income items and net capital gains and losses for financial statement
and tax  purposes  and may  result in  reclassification  among  certain  capital
accounts.

     FUTURES  CONTRACTS  -- Each  fund may buy and sell  interest  rate  futures
contracts relating to debt securities. Each fund may use futures transactions to
maintain cash reserves while remaining fully invested, to facilitate trading, to
reduce  transaction costs, or to pursue higher investment returns when a futures
contract is priced more attractively than its underlying  security or index. One
of the risks of entering into futures contracts may include the possibility that
the changes in value of the contract may not correlate with the changes in value
of the underlying  securities.  Upon entering into a futures contract, the funds
are  required  to deposit  either  cash or  securities  in an amount  equal to a
certain percentage of the contract value (initial margin).  Subsequent  payments
(variation  margin)  are made or  received  daily,  in cash,  by the funds.  The
variation  margin is equal to the  daily  change  in the  contract  value and is
recorded as an unrealized  gain or loss. The funds  recognize a realized gain or
loss when the contract is closed or expires.  Net realized and unrealized  gains
or losses  occurring  during  the  holding  period of  futures  contracts  are a
component of realized gain (loss) on  investments  and  unrealized  appreciation
(depreciation)  on  investments,   respectively.  There  were  no  open  futures
contracts at February 28, 1999.

     ADDITIONAL  INFORMATION  -- Funds  Distributor,  Inc.  (FDI) is the trust's
distributor. Certain officers of FDI are also officers of the trust.


                                                 www.americancentury.com      33


Notes to Financial Statements
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

- --------------------------------------------------------------------------------
2. TRANSACTIONS WITH RELATED PARTIES

    The trust has entered  into a Management  Agreement  with  American  Century
Investment  Management,  Inc.  (ACIM) that  provides  each fund with  investment
advisory and management  services in exchange for a single,  unified  management
fee.  Expenses  excluded from this  agreement are  brokerage,  taxes,  portfolio
insurance,  interest,  fees and expenses of the Trustees who are not  considered
"interested persons" as defined in the Investment Company Act of 1940 (including
counsel fees) and extraordinary  expenses.  The fee is calculated daily and paid
monthly.  It consists  of an  Investment  Category  Fee based on the average net
assets of the funds in a specific fund's  investment  category and a Complex Fee
based on the average net assets of all the funds managed by ACIM.  The rates for
the Investment  Category Fee range from 0.1625% to 0.2800% and the rates for the
Complex Fee range from 0.2900% to 0.3100%. For the six months ended February 28,
1999,  the  effective  annual   management  fee  was  0.51%  for   Limited-Term,
Intermediate-Term, and Long-Term.

    Certain  officers  and  Trustees  of the  trust  are  also  officers  and/or
directors,  and,  as a  group,  controlling  stockholders  of  American  Century
Companies,  Inc., the parent of the trust's  investment  manager,  ACIM, and the
trust's transfer agent, American Century Services Corporation.

    As of February 28, 1999, Limited-Term,  Intermediate-Term, and Long-Term had
invested  $7,751,  $10,117,  and $7,247,  respectively,  in shares of California
Tax-Free  Money  Market Fund,  which is also managed by ACIM.  The terms of such
transactions  were identical to those with non-related  entities except that, to
avoid  duplicative  management  fees, the funds did not pay ACIM management fees
with respect to assets invested in California Tax-Free Money Market.

- --------------------------------------------------------------------------------
3. INVESTMENT TRANSACTIONS

    Investment transactions, excluding short-term investments, were as follows:

                         LIMITED-TERM     INTERMEDIATE-TERM      LONG-TERM
                           TAX-FREE           TAX-FREE           TAX FREE
PURCHASES
Municipal Obligations .. $53,825,479       $145,027,842         $128,883,986

PROCEEDS FROM SALES
Municipal Obligations .. $35,096,054       $123,570,116         $103,126,976

    On February  28,  1999,  the  composition  of  unrealized  appreciation  and
depreciation of investment securities based on the aggregate cost of investments
for federal income tax purposes was as follows:

                         LIMITED-TERM     INTERMEDIATE-TERM      LONG-TERM
                           TAX-FREE           TAX-FREE           TAX FREE
Appreciation ...........  $3,326,093        $22,143,865        $23,239,160
Depreciation ...........    (4,679)          (518,623)          (453,148)
                        --------------     --------------     --------------
Net ....................  $3,321,414        $21,625,242        $22,786,012
                        ==============     ==============     ==============

    The aggregate  cost of  investments  for federal income tax purposes was the
same as the cost for financial reporting purposes.


34      1-800-345-2021


Notes to Financial Statements
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

- --------------------------------------------------------------------------------
4. BANK LOANS

    Effective  December 18, 1998,  the funds,  along with other funds managed by
ACIM, entered into an unsecured  $570,000,000 bank line of credit agreement with
Chase  Manhattan  Bank.  Borrowings  under the  agreement  bear  interest at the
Federal  Funds rate plus  0.40%.  The funds may borrow  money for  temporary  or
emergency  purposes to fund  shareholder  redemptions.  The funds did not borrow
from the line during the period December 18, 1998 through February 28, 1999.

- --------------------------------------------------------------------------------
5. SUBSEQUENT EVENTS

  The following name changes became effective March 1, 1999:

           =====================================================================
           NEW NAME                      FORMER NAME
           =====================================================================
  FUND:    California Limited-Term       American Century - Benham
           Tax-Free Fund                 California Limited-Term Tax-Free Fund

  FUND:    California                    American Century - Benham
           Intermediate-Term             California Intermediate-Term
           Tax-Free Fund                 Tax-Free Fund

  FUND:    California Long-Term          American Century - Benham
           Tax-Free Fund                 California Long-Term Tax-Free Fund


                                                 www.americancentury.com      35


Cal. Limited-Term Tax-Free--Financial Highlights
<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------

FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED AUGUST 31 (EXCEPT AS NOTED)

                                          1999(1)            1998            1997          1996            1995           1994
PER-SHARE DATA
Net Asset Value,
<S>                                  <C>               <C>            <C>            <C>            <C>            <C>        
Beginning of Period .................$     10.43       $     10.30    $     10.19    $     10.23    $     10.12    $     10.34
                                     -----------       -----------    -----------    -----------    -----------    -----------
Income From Investment Operations
  Net Investment Income .............       0.20              0.42           0.43           0.43           0.41           0.38
  Net Realized and Unrealized Gain
  (Loss) on Investment Transactions .       0.04              0.13           0.11          (0.04)          0.11          (0.18)
                                     -----------       -----------    -----------    -----------    -----------    -----------
  Total From Investment Operations ..       0.24              0.55           0.54           0.39           0.52           0.20
                                     -----------       -----------    -----------    -----------    -----------    -----------
Distributions
  From Net Investment Income ........      (0.20)            (0.42)         (0.43)         (0.43)         (0.41)         (0.38)
  In Excess of Net Realized Gains ...       --                --             --             --             --            (0.04)
                                     -----------       -----------    -----------    -----------    -----------    -----------
  Total Distributions ...............      (0.20)            (0.42)         (0.43)         (0.43)         (0.41)         (0.42)
                                     -----------       -----------    -----------    -----------    -----------    -----------
Net Asset Value, End of Period ......$     10.47       $     10.43    $     10.30    $     10.19    $     10.23    $     10.12
                                     ===========       ===========    ===========    ===========    ===========    ===========
  Total Return(2) ...................       2.27%             5.40%          5.42%          3.87%          5.33%          1.90%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ...............       0.51%(3)          0.52%          0.49%          0.49%          0.51%          0.51%
Ratio of Net Investment Income
to Average Net Assets ...............       3.76%(3)          4.02%          4.20%          4.20%          4.10%          3.68%
Portfolio Turnover Rate .............         24%               44%            47%            44%            50%            66%
Net Assets, End of Period
(in thousands) ......................$   151,003       $   130,137    $   126,631    $   103,707    $   104,723    $   120,627
</TABLE>

(1) Six months ended February 28, 1999 (unaudited).

(2) Total  return   assumes   reinvestment   of  dividends   and  capital  gains
    distributions,  if any. Total returns for periods less than one year are not
    annualized.

(3) Annualized.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL  HIGHLIGHTS--This  statement itemizes current period
activity and  statistics and provides  comparison  data for the last five fiscal
years.

On a per-share basis, it includes:

* share price at the beginning of the period

* investment income and capital gains or losses

* income and capital gains distributions paid to shareholders

* share price at the end of the period

It also includes some key statistics for the period:

* total return--the overall percentage return of the fund, assuming reinvestment
  of all distributions

* expense ratio--operating expenses as a percentage of average net assets

* net income ratio--net investment income as a percentage of average net assets

* portfolio turnover--the percentage of the portfolio that was replaced during
  the period

                                               See Notes to Financial Statements


36      1-800-345-2021


<TABLE>
<CAPTION>
Cal. Int.-Term Tax-Free--Financial Highlights
- --------------------------------------------------------------------------------

FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED AUGUST 31 (EXCEPT AS NOTED)

                                          1999(1)       1998        1997        1996        1995        1994
PER-SHARE DATA
Net Asset Value,
<S>                                       <C>          <C>         <C>         <C>         <C>         <C>   
Beginning of Period ....................  $11.37       $11.27      $11.05      $11.06      $10.86      $11.36
                                        ----------   ---------   ---------   ---------   ---------   ---------
Income From Investment Operations
  Net Investment Income ................   0.25         0.52        0.54        0.54        0.54        0.54
  Net Realized and Unrealized Gain
  (Loss) on Investment Transactions ....   0.03         0.25        0.25       (0.01)       0.20       (0.41)
                                        ----------   ---------   ---------   ---------   ---------   ---------
  Total From Investment Operations .....   0.28         0.77        0.79        0.53        0.74        0.13
                                        ----------   ---------   ---------   ---------   ---------   ---------
Distributions
  From Net Investment Income ...........  (0.25)       (0.52)      (0.54)      (0.54)      (0.54)      (0.54)
  From Net Realized Gains on
  Investment Transactions ..............  (0.11)       (0.15)      (0.03)        --          --        (0.08)
  In Excess of Net Realized Gains ......    --           --          --          --          --        (0.01)
                                        ----------   ---------   ---------   ---------   ---------   ---------
  Total Distributions ..................  (0.36)       (0.67)      (0.57)      (0.54)      (0.54)      (0.63)
                                        ----------   ---------   ---------   ---------   ---------   ---------
Net Asset Value, End of Period .........  $11.29       $11.37      $11.27      $11.05      $11.06      $10.86
                                        ==========   =========   =========   =========   =========   =========
  Total Return(2) ......................   2.51%        7.00%       7.39%       4.79%       7.09%       1.11%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets .................. 0.51%(3)       0.51%       0.48%       0.48%       0.48%       0.48%
Ratio of Net Investment Income
to Average Net Assets .................. 4.40%(3)       4.60%       4.81%       4.87%       5.02%       4.82%
Portfolio Turnover Rate ................    26%          28%         42%         36%         25%         44%
Net Assets, End of
Period (in thousands) .................. $490,136     $460,604    $435,440    $430,950    $417,550    $448,293
</TABLE>

(1) Six months ended February 28, 1999 (unaudited).

(2) Total  return   assumes   reinvestment   of  dividends   and  capital  gains
    distributions,  if any. Total returns for periods less than one year are not
    annualized.

(3) Annualized.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL  HIGHLIGHTS--This  statement itemizes current period
activity and  statistics and provides  comparison  data for the last five fiscal
years.

On a per-share basis, it includes:

* share price at the beginning of the period

* investment income and capital gains or losses

* income and capital gains distributions paid to shareholders

* share price at the end of the period

It also includes some key statistics for the period:

* total return--the overall percentage return of the fund, assuming reinvestment
  of all distributions

* expense ratio--operating expenses as a percentage of average net assets

* net income ratio--net investment income as a percentage of average net assets

* portfolio turnover--the percentage of the portfolio that was replaced during
  the period

See Notes to Financial Statements


                                                 www.americancentury.com      37


<TABLE>
<CAPTION>
Cal. Long-Term Tax-Free--Financial Highlights
- --------------------------------------------------------------------------------

FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED AUGUST 31 (EXCEPT AS NOTED)

                                           1999(1)       1998        1997        1996        1995        1994
PER-SHARE DATA
Net Asset Value,
<S>                                        <C>          <C>         <C>         <C>         <C>         <C>   
Beginning of Period .....................  $11.72       $11.48      $11.06      $10.94      $10.88      $12.02
                                         ----------   ---------   ---------   ---------   ---------   ---------
Income From Investment Operations
  Net Investment Income .................   0.28         0.59        0.61        0.61        0.62        0.63
  Net Realized and Unrealized Gain
  (Loss) on Investment Transactions .....  (0.02)        0.44        0.44        0.12        0.12       (0.71)
                                         ----------   ---------   ---------   ---------   ---------   ---------
  Total From Investment Operations ......   0.26         1.03        1.05        0.73        0.74       (0.08)
                                         ----------   ---------   ---------   ---------   ---------   ---------
Distributions
  From Net Investment Income ............  (0.28)       (0.59)      (0.61)      (0.61)      (0.62)      (0.63)
  From Net Realized Gains on
  Investment Transactions ...............  (0.10)       (0.20)      (0.02)        --        (0.06)      (0.43)
                                         ----------   ---------   ---------   ---------   ---------   ---------
  Total Distributions ...................  (0.38)       (0.79)      (0.63)      (0.61)      (0.68)      (1.06)
                                         ----------   ---------   ---------   ---------   ---------   ---------
Net Asset Value, End of Period ..........  $11.60       $11.72      $11.48      $11.06      $10.94      $10.88
                                         ==========   =========   =========   =========   =========   =========
  Total Return(2) .......................   2.20%        9.25%       9.70%       6.77%       7.21%      (0.78)%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ................... 0.51%(3)       0.51%       0.48%       0.48%       0.49%       0.48%
Ratio of Net Investment Income
to Average Net Assets ................... 4.84%(3)       5.07%       5.40%       5.48%       5.84%       5.51%
Portfolio Turnover Rate .................    31%          36%         50%         42%         60%         62%
Net Assets, End of Period
(in thousands) .......................... $348,095     $325,194    $304,671    $288,022    $276,085    $277,477
</TABLE>

(1) Six months ended February 28, 1999 (unaudited).

(2) Total  return   assumes   reinvestment   of  dividends   and  capital  gains
    distributions,  if any. Total returns for periods less than one year are not
    annualized.

(3) Annualized.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL  HIGHLIGHTS--This  statement itemizes current period
activity and  statistics and provides  comparison  data for the last five fiscal
years.

On a per-share basis, it includes:

* share price at the beginning of the period

* investment income and capital gains or losses

* income and capital gains distributions paid to shareholders

* share price at the end of the period

It also includes some key statistics for the period:

* total return--the overall percentage return of the fund, assuming reinvestment
  of all distributions

* expense ratio--operating expenses as a percentage of average net assets

* net income ratio--net investment income as a percentage of average net assets

* portfolio turnover--the percentage of the portfolio that was replaced during
  the period

                                               See Notes to Financial Statements


38      1-800-345-2021


Background Information
- --------------------------------------------------------------------------------

INVESTMENT PHILOSOPHY AND POLICIES

     American  Century offers 38 fixed-income  funds,  ranging from money market
portfolios  to long-term  bond funds and including  both taxable and  tax-exempt
funds.  Each is  managed to  provide a "pure  play" on a specific  sector of the
fixed-income market. To ensure adherence to this principle,  the basic structure
of each portfolio is tied to a specific market index.  Fund managers  attempt to
add value by making  modest  portfolio  adjustments  based on their  analysis of
prevailing market conditions. Investment decisions are made by management teams,
which meet regularly to discuss market analysis and investment strategies.

     In addition to these principles, each fund has its own investment policies:

     CALIFORNIA  LIMITED-TERM  TAX-FREE seeks to provide  interest income exempt
from both federal and California state income taxes. The fund invests  primarily
in California  municipal securities and maintains a weighted average maturity of
five years or less.

     CALIFORNIA  INTERMEDIATE-TERM  TAX-FREE  seeks to provide  interest  income
exempt from both federal and  California  state income  taxes.  The fund invests
primarily in California  municipal  securities and maintains a weighted  average
maturity of 5-10 years.

     CALIFORNIA  LONG-TERM TAX-FREE seeks to provide interest income exempt from
federal and  California  state  income  taxes.  The fund  invests  primarily  in
California  municipal securities and maintains a weighted average maturity of 10
years or more.

COMPARATIVE INDICES

     The following  indices are used in the report to serve as fund  performance
comparisons. They are not investment products available for purchase.


     The LEHMAN  BROTHERS  3-YEAR  MUNICIPAL BOND INDEX is composed of more than
4,000 municipal bonds with maturities of 2-4 years. The average credit rating of
the securities in the index is AA1/AA2. The index's average maturity is 3 years

     The LEHMAN  BROTHERS  5-YEAR GENERAL  OBLIGATION  (GO) INDEX is composed of
more than 5,000 municipal bonds with maturities of 4-6 years. The average credit
rating of the securities in the index is AA1/AA2.  The index's average  maturity
is approximately 5 years.

     THE LEHMAN BROTHERS LONG-TERM MUNICIPAL BOND INDEX is composed of more than
2,800 municipal bonds with maturities  greater than 22 years. The average credit
rating of the securities in the index is AA2/AA3.  The index's average  maturity
is approximately 27 years.

LIPPER RANKINGS

     LIPPER INC. is an independent mutual fund ranking service that groups funds
according to their investment objectives. Rankings are based on average annual
returns for each fund in a given category for the periods indicated. Rankings
are not included for periods less than one year.

     CALIFORNIA  SHORT-INTERMEDIATE MUNICIPAL DEBT FUNDS (Limited-Term Tax-Free)
- --funds  that  invest at least 65% of assets in  municipal  debt issues that are
exempt from taxation in California with  dollar-weighted  average  maturities of
1-5 years.

     CALIFORNIA INTERMEDIATE MUNICIPAL DEBT FUNDS  (Intermediate-Term  Tax-Free)
- --funds  that  invest at least 65% of assets in  municipal  debt issues that are
exempt from taxation in California with  dollar-weighted  average  maturities of
5-10 years.

     CALIFORNIA MUNICIPAL DEBT FUNDS (Long-Term  Tax-Free)--funds that invest at
least 65% of assets in  municipal  debt issues that are exempt from  taxation in
California.

[right margin]

INVESTMENT TEAM LEADERS

  PORTFOLIO MANAGERS
     DAVE MACEWEN
     COLLEEN DENZLER
     JOEL SILVA

  CREDIT RESEARCH DIRECTOR
     STEVEN PERMUT

CREDIT RATING GUIDELINES

       CREDIT  RATINGS  ARE ISSUED BY  INDEPENDENT  RESEARCH  COMPANIES  SUCH AS
STANDARD & POOR'S AND MOODY'S.  THEY ARE BASED ON AN ISSUER'S FINANCIAL STRENGTH
AND ABILITY TO PAY INTEREST AND PRINCIPAL IN A TIMELY MANNER.

       SECURITIES RATED AAA, AA, A, OR BBB ARE CONSIDERED "INVESTMENT-GRADE"
SECURITIES, MEANING THEY ARE RELATIVELY SAFE FROM DEFAULT. HERE ARE THE MOST
COMMON CREDIT RATINGS AND THEIR DEFINITIONS:

*      AAA--EXTREMELY STRONG ABILITY TO MEET FINANCIAL OBLIGATIONS.

*      AA--VERY STRONG ABILITY TO MEET FINANCIAL OBLIGATIONS.

*      A--STRONG ABILITY TO MEET FINANCIAL OBLIGATIONS.

*      BBB--GOOD ABILITY TO MEET FINANCIAL OBLIGATIONS.

       IT'S IMPORTANT TO NOTE THAT CREDIT RATINGS ARE SUBJECTIVE, REFLECTING THE
OPINIONS OF THE RATING AGENCIES; THEY ARE NOT ABSOLUTE STANDARDS OF QUALITY.


                                                 www.americancentury.com      39


Glossary
- --------------------------------------------------------------------------------

RETURNS

* TOTAL  RETURN  figures  show the overall  percentage  change in the value of a
hypothetical  investment  in  the  fund  and  assume  that  all  of  the  fund's
distributions are reinvested.

* AVERAGE ANNUAL RETURNS  illustrate the annually  compounded returns that would
have produced the fund's cumulative total returns if the fund's  performance had
been  constant  over the  entire  period.  Average  annual  returns  smooth  out
variations  in a fund's  return;  they are not the same as  fiscal  year-by-year
results.

YIELDS

* 30-DAY SEC YIELD  represents net  investment  income earned by the fund over a
30-day period,  expressed as an annual percentage rate based on the fund's share
price at the end of the 30-day  period.  The SEC yield  should be regarded as an
estimate  of the  fund's  rate of  investment  income,  and it may not equal the
fund's  actual  income  distribution  rate,  the income paid to a  shareholder's
account, or the income reported in the fund's financial statements.

*  TAX-EQUIVALENT  YIELDS show the taxable  yields that  investors in a combined
California  and federal  income tax bracket  would have to earn before  taxes to
equal the fund's tax-free yield.

INVESTMENT TERMS

* BASIS POINT--one  one-hundredth  of a percentage point (or 0.01%).  Therefore,
100 basis points equal one percentage point (or 1%).

* YIELD CURVE--a graphic representation of the relationship between maturity and
yield for fixed-income securities.

STATISTICAL TERMINOLOGY

* NUMBER OF SECURITIES--the  number of different  securities held by a fund on a
given date.

*  WEIGHTED  AVERAGE   MATURITY   (WAM)--a  measure  of  the  sensitivity  of  a
fixed-income  portfolio to interest rate changes. WAM indicates the average time
until the securities in the portfolio mature, weighted by dollar amount.

* AVERAGE  DURATION--a  time-weighted  average  of the  interest  and  principal
payments  of the  securities  in a  portfolio.  As the  duration  of a portfolio
increases,  so does the impact of a change in interest rates on the value of the
portfolio.

* EXPENSE RATIO--the  operating expenses of the fund,  expressed as a percentage
of average net assets.  Shareholders pay an annual fee to the investment manager
for  investment  advisory  and  management  services.  The expenses and fees are
deducted from fund income, not from each shareholder account. (See Note 2 in the
Notes to Financial Statements.)

TYPES OF MUNICIPAL SECURITIES

* COPS  (CERTIFICATES OF  PARTICIPATION)/  LEASES--securities  issued to finance
public  property  improvements  (such as city  halls and  police  stations)  and
equipment  purchases.  Certificates of  participation  represent  long-term debt
obligations,  but leases have a higher risk profile  because they require annual
appropriation.

*    GO (GENERAL OBLIGATION) BONDS--securities backed by the taxing power of the
issuer.

*  LAND-SECURED  BONDS--securities  such as Mello-Roos  bonds and 1915 Act bonds
that are issued to finance real estate development projects.


40      1-800-345-2021


Glossary
- --------------------------------------------------------------------------------
                                                                    (Continued)

*  PREREFUNDED/ETM  BONDS--securities  refinanced or escrowed to maturity by the
issuer because of their premium  coupons  (higher-than-market  interest  rates).
These  bonds  tend to have  higher  credit  ratings  because  they are backed by
Treasury securities.

*  REVENUE  BONDS--securities  backed by  revenues  from  sales  taxes or from a
specific project, system, or facility (such as a hospital,  electric utility, or
water system).

FUND CLASSIFICATIONS

INVESTMENT OBJECTIVE

The investment  objective may be based on the fund's  objective as stated in its
prospectus or fund profile,  or the fund's  categorization by independent rating
organizations based on its management style.

* CAPITAL  PRESERVATION--Offers  taxable and  tax-free  money  market  funds for
relative  stability of  principal  and  liquidity,  allowing  maximum  portfolio
diversification.

* INCOME--Offers  funds that can provide current income and competitive  yields,
as well as a strong and stable  foundation and generally lower volatility levels
than stock funds.

*  GROWTH  &  INCOME--Offers  funds  that  emphasize  both  growth  and  income,
diversification,  varying  capitalization sizes, and different investment styles
and strategies.

*  GROWTH--Offers  funds  with a focus on  capital  appreciation  and  long-term
growth,  generally providing high return potential with corresponding high price
fluctuation risk.

RISK

The classification of funds by risk category is based on quantitative historical
measures as well as qualitative prospective measures. It is not intended to be a
precise  indicator  of future risk or return  levels.  The degree of risk within
each category can vary  significantly,  and some fund returns have  historically
been higher than more aggressive  funds or lower than more  conservative  funds.
Please be aware that the fund's category may change over time. Therefore,  it is
important  that you read a fund's  prospectus or fund profile  carefully  before
investing to ensure its  objectives,  policies and risk potential are consistent
with your needs.

* CONSERVATIVE--these funds generally provide lower return potential with either
low or minimal price fluctuation risk.

* MODERATE--  these funds  generally  provide  moderate  return  potential  with
moderate price fluctuation risk.

*  AGGRESSIVE--  these  funds  generally  provide  high  return  potential  with
corresponding high price fluctuation risk.


                                                 www.americancentury.com      41


Notes
- --------------------------------------------------------------------------------


42      1-800-345-2021


Notes
- --------------------------------------------------------------------------------


                                                 www.americancentury.com      43


Notes
- --------------------------------------------------------------------------------


44      1-800-345-2021


[inside back cover]

===============================================================================
INVESTMENT OBJECTIVE - CAPITAL PRESERVATION
===============================================================================

                  RISK LEVEL - CONSERVATIVE

TAXABLE MONEY MARKETS           TAX-FREE MONEY MARKETS

Premium  Capital Reserve        FL Municipal Money Market
Prime Money Market              CA Municipal Money Market
Premium Government Reserve      CA Tax-Free Money Market
Government Agency               Tax-Free Money Market
   Money Market
Capital Preservation

===============================================================================
INVESTMENT OBJECTIVE - INCOME
===============================================================================

                   RISK LEVEL - AGGRESSIVE

TAXABLE BONDS                   TAX-FREE BONDS

Target 2025*                    CA High-Yield Municipal
Target 2020*                    High-Yield Municipal
Target 2015*
Target 2010*
High-Yield
International Bond

                    RISK LEVEL - MODERATE

TAXABLE BONDS                   TAX-FREE BONDS

Long-Term Treasury              CA Long-Term Tax-Free
Target 2005*                    Long-Term Tax-Free
Bond                            CA Insured Tax-Free
Premium Bond

                   RISK LEVEL - CONSERVATIVE

TAXABLE BONDS                   TAX-FREE BONDS

Intermediate-Term Bond          CA Intermediate-Term Tax-Free
Intermediate-Term Treasury      AZ Intermediate-Term Municipal
GNMA                            FL Intermediate-Term Municipal
Inflation-Adjusted Treasury     Intermediate-Term  Tax-Free
Limited-Term Bond               CA Limited-Term  Tax-Free
Target 2000*                    Limited-Term Tax-Free
Short-Term Government
Short-Term Treasury

===============================================================================
INVESTMENT OBJECTIVE - GROWTH AND INCOME
===============================================================================

                     RISK LEVEL - AGGRESSIVE

DOMESTIC EQUITY

Small Cap Quantitative
Small Cap Value

                      RISK LEVEL - MODERATE

ASSET ALLOCATION/BALANCED       DOMESTIC EQUITY        SPECIALTY

Strategic Allocation --         Equity Growth          Utilities
   Aggressive                   Equity Index           Real Estate
Balanced                        Tax-Managed Value
Strategic Allocation --         Income & Growth
   Moderate                     Value
Strategic Allocation --         Equity Income
   Conservative

===============================================================================
INVESTMENT OBJECTIVE - GROWTH
===============================================================================

                      RISK LEVEL - AGGRESSIVE

DOMESTIC EQUITY                 SPECIALTY              INTERNATIONAL

New Opportunities               Global Gold            Emerging Markets
Giftrust(reg.tm)                                       International Discovery
Vista                                                  International Growth
Heritage                                               Global Growth
Growth
Ultra
Select

                       RISK LEVEL - MODERATE

SPECIALTY

Global Natural Resources


The investment  objective may be based on the fund's  objective as stated in its
prospectus or fund profile,  or the fund's  categorization by independent rating
organizations based on its management style.

The classification of funds by risk category is based on quantitative historical
measures as well as qualitative prospective measures. It is not intended to be a
precise  indicator  of future risk or return  levels.  The degree of risk within
each category can vary  significantly,  and some fund returns have  historically
been higher than more aggressive  funds or lower than more  conservative  funds.
Please be aware that a fund's  category may change over time.  Therefore,  it is
important  that you read a fund's  prospectus or fund profile  carefully  before
investing to ensure its  objectives,  policies and risk potential are consistent
with your needs.

For a definition of fund categories, see the Glossary.

*  While listed within the Income investment objective,  the Target funds do not
   pay current dividend income.  Income dividends are distributed once a year in
   December. The Target funds are listed in all three risk categories due to the
   dramatic  price  volatility  investors may  experience  during certain market
   conditions.  If held  to  their  target  dates,  however,  they  can  offer a
   conservative, dependable way to invest for a specific time horizon.

Please call for a prospectus  or profile on any  American  Century  fund.  These
documents contain important information including charges and expenses,  and you
should read them carefully before you invest or send money.


[back cover]

[american century logo(reg.sm)]
American
Century

P.O. BOX 419200
KANSAS CITY, MISSOURI 64141-6200

WWW.AMERICANCENTURY.COM

INVESTOR RELATIONS
1-800-345-2021 OR 816-531-5575

AUTOMATED INFORMATION LINE
1-800-345-8765

FAX: 816-340-7962

TELECOMMUNICATIONS DEVICE FOR THE DEAF
1-800-634-4113 OR 816-444-3485

BUSINESS, NOT-FOR-PROFIT, EMPLOYER-SPONSORED RETIREMENT PLANS
1-800-345-3533

AMERICAN CENTURY CALIFORNIA TAX-FREE AND MUNICIPAL FUNDS

INVESTMENT MANAGER
AMERICAN CENTURY INVESTMENT MANAGEMENT, INC.
KANSAS CITY, MISSOURI

THIS REPORT AND THE STATEMENTS IT CONTAINS ARE SUBMITTED FOR THE GENERAL
INFORMATION OF OUR SHAREHOLDERS. THE REPORT IS NOT AUTHORIZED FOR DISTRIBUTION
TO PROSPECTIVE INVESTORS UNLESS PRECEDED OR ACCOMPANIED BY AN EFFECTIVE
PROSPECTUS.

American Century Investments                                      BULK RATE
P.O. Box 419200                                               U.S. POSTAGE PAID
Kansas City, MO 64141-6200                                    AMERICAN CENTURY
www.americancentury.com                                           COMPANIES

9904                                                    Funds Distributor, Inc.
SH-BKT-15980                      (c)1999 American Century Services Corporation
<PAGE>
[front cover]
                                                              FEBRUARY 28, 1999

SEMIANNUAL REPORT
- -----------------
AMERICAN CENTURY

[graphic of stairs]

AMERICAN CENTURY
- ---------------------------------
CALIFORNIA HIGH-YIELD MUNICIPAL
CALIFORNIA INSURED TAX-FREE

                                                 [american century logo(reg.sm)]
                                                                        American
                                                                         Century


[inside front cover]

AMERICAN CENTURY KEEPS WITH TRADITION
- --------------------------------------------------------------------------------

FOLLOWING BENHAM'S FOOTSTEPS

On March 1, we made it easier for you to do business with us. We simplified  our
organizational  structure by  eliminating  the  venerable  Benham and  Twentieth
Century names, and putting all our funds under American Century. The name change
will not affect your funds' investment  management--the proven Benham investment
philosophy, experienced portfolio management teams, and legacy of innovation and
high-quality performance remain.

CONSISTENT,  SOLID  PERFORMANCE--We'll  continue  to  adhere  to the  investment
practices  that have  helped  our  fixed-income  funds  perform so well over the
years. In 1998,  two-thirds of American Century bond funds beat their peer group
average, according to Lipper, Inc.

CONSISTENT  INVESTMENT  PHILOSOPHY--American  Century  fixed-income  funds  will
continue to offer a "pure play" on their sector of the market, as they did under
Benham.

CONTINUITY  OF THE  MANAGEMENT  TEAM--The  investment  process  is not all  that
remains  the same;  we've  retained  our core team of  experienced  fixed-income
portfolio managers.

    *  Experience--The  more than 35 fixed-income  investment  professionals  at
       American  Century have an average of nine years of investment  management
       experience.

    *  Bigger and better--Since  American Century was formed,  we've doubled the
       size  of the  original  Benham  management  team  in our  Mountain  View,
       California office.

TRADITION OF INNOVATION--Like  Benham before it, American Century is a leader in
fixed-income  fund  innovation.  For example,  we introduced a total of four new
fixed-income  funds  in the  last  three  years,  including  the  first  no-load
inflation-adjusted bond fund.

We continue to run our fixed-income operation from our offices in Mountain View,
California, which is also home to our walk-in Investor Center.

We look forward to continuing to meet your fixed-income  investment needs in the
Benham tradition.

WHAT'S NEW . . .

     We now classify our funds in easy-to-remember categories based on objective
and risk. The four  objective  categories  are:  CAPITAL  PRESERVATION,  INCOME,
GROWTH AND INCOME,  and GROWTH.  The three risk  categories  are:  CONSERVATIVE,
MODERATE,  and AGGRESSIVE.  This new  classification  system makes it easier for
investors to identify which funds are right for them.

     Turn to the  inside  back  cover of this  report to see a list of the funds
classified by objective and risk. For  definitions of the fund  categories,  see
the Glossary.

Past performance is no guarantee of future results.

[left margin]

CALIFORNIA HIGH-YIELD MUNICIPAL
(BCHYX)
- --------------------------------------

CALIFORNIA INSURED TAX-FREE
(BCINX)
- --------------------------------------


Our Message to You
- --------------------------------------------------------------------------------
/photo of James E. Stowers III and James E. Stowers, Jr./
James E. Stowers III, seated, with James E. Stowers, Jr.

     During the six-month period ended February 28, 1999, the financial  markets
experienced  a dramatic  shift in  expectations.  Six months ago,  the  economic
outlook appeared grim--financial problems in Asia, Russia, and Latin America led
to expectations of an impending U.S. economic  slowdown.  That sent the domestic
stock market reeling and pushed U.S. bond yields to record lows.

     But expectations began to change in the fourth quarter of 1998. The Federal
Reserve cut interest  rates three times in six weeks,  bolstering  confidence in
the economy.  That, in turn, brought greater stability to U.S. financial markets
and eventually produced a stock market rebound.

     By early 1999,  reports of the strongest  quarterly  economic  surge in two
years caught  investors by surprise.  Bond yields rose  reflexively  amid higher
inflation  expectations,  but productivity gains and competitive  pressures kept
inflation at its lowest level in a dozen years.

     The resiliency of California's economy was especially surprising. With many
Asian  economies--including  six of the state's ten biggest export markets--at a
standstill,  there were  concerns that the economic  stagnation  would spread to
California.  However,  the state's  economy  hardly  missed a beat and is now as
healthy as it has been in a decade.

     This economic environment has been positive for California municipal bonds.
All seven of American Century's  California  municipal funds, ranging from money
market portfolios to long-term and high-yield bond funds, produced above-average
returns  during  the  past  six  months,  as well as over  longer  time  periods
(according to Lipper Inc.).  We've been  investing in the  California  municipal
market for more than 15 years, and the consistent  performance of our California
funds reflects that experience.

     At  American  Century,  we've  recently  made  some  changes  in the way we
classify  our funds  that we hope will make it easier  for you to  identify  and
select the funds that best meet your investment needs. We reorganized our family
of 71 funds  based on  investment  goals and risk  level (see the front and back
inside covers of this report for more details).

     In  addition,  California  municipal  fund  shareholders  were the first to
receive  our  new  simplified  prospectus.   This  document  provides  the  fund
information  you need in clear and  straightforward  language,  and it  includes
helpful tips and definitions of investment terms.

     We want your  experience  with  American  Century to be  rewarding,  and we
appreciate your continued confidence in us.

Sincerely,

/s/James E. Stowers, Jr.                 /s/James E. Stowers III
James E. Stowers, Jr.                    James E. Stowers III
Chairman of the Board and Founder        Chief Executive Officer

[right margin]

              Table of Contents
   Report Highlights .......................................................   2
   Market Perspective ......................................................   3
CALIFORNIA HIGH-YIELD MUNICIPAL
   Performance Information .................................................   4
   Management Q&A ..........................................................   5
   Portfolio Composition
      by Credit Rating .....................................................   6
   Top Five Sectors ........................................................   7
   Schedule of Investments .................................................   8
CALIFORNIA INSURED TAX-FREE
   Performance Information .................................................  14
   Management Q&A ..........................................................  15
   Top Five Sectors ........................................................  16
   Portfolio Composition
      by Credit Rating .....................................................  17
   Schedule of Investments .................................................  18
FINANCIAL STATEMENTS
   Statements of Assets and
      Liabilities ..........................................................  21
   Statements of Operations ................................................  22
   Statements of Changes
      in Net Assets ........................................................  23
   Notes to Financial
      Statements ...........................................................  24
   Financial Highlights ....................................................  26
OTHER INFORMATION
   Background Information
      Investment Philosophy
         and Policies ......................................................  28
      Comparative Indices ..................................................  28
      Lipper Rankings ......................................................  28
      Investment Team
         Leaders ...........................................................  28
      Credit Rating
         Guidelines ........................................................  28
   Glossary ................................................................  29


                                                  www.americancentury.com      1


Report Highlights
- --------------------------------------------------------------------------------

MARKET PERSPECTIVE

*   Municipal bonds posted modestly positive returns during the six months ended
    February 28, 1999.

*   Short- and intermediate-term  municipal bonds produced modest price gains as
    their yields fell slightly.  They outperformed  long-term municipals,  whose
    yields rose a little.

*   Bond yields fell and prices rose early in the period as the Federal  Reserve
    cut short-term  interest rates three times, but yields rose in early 1999 as
    the U.S. economy surged.

*   Municipal bonds outperformed  Treasury  securities in terms of total return,
    thanks to improving supply and demand conditions.  However, municipal yields
    are still attractive relative to Treasury yields.

CALIFORNIA HIGH-YIELD MUNICIPAL

*   The fund  outperformed  the  average  California  municipal  debt fund while
    offering a significantly higher yield.

*   The "neutral"  duration of the portfolio  during a volatile  environment for
    bonds helped California High-Yield Municipal outperform other funds.

*   Fund  performance  was also  bolstered  by the  portfolio's  45% position in
    unrated bonds, which performed well as credit spreads tightened.

*   California  High-Yield  Municipal  continued to adhere to its  long-standing
    investment  practices,  which  emphasize  a value  approach  and  individual
    security selection instead of targeting sectors.

*   It appears as though the California economy will remain robust, which should
    help  California  municipal  securities.  Rapid  growth  in  the  high-tech,
    biotech,  and entertainment  sectors has offset weakened overseas demand for
    California goods.

CALIFORNIA INSURED TAX-FREE

*   The fund  outperformed the average  California  insured  municipal debt fund
    while offering a higher yield.

*   Because of our  expectations  for lower interest rates,  the portfolio had a
    longer-than-average  duration  and  focused on  discount  bonds  (bonds with
    lower-than-prevailing interest rates)

*   The  longer  duration  allowed   California  Insured  Tax-Free  to  cap-ture
    additional price gains when interest rates fell. The discount bonds gave the
    portfolio some protection from refinancing by municipal bond issuers.

*   Looking ahead, market conditions appear to be favorable for municipal bonds,
    so we plan to maintain the fund's current positioning.

[left margin]

      CALIFORNIA HIGH-YIELD MUNICIPAL
                  (BCHYX)
TOTAL RETURNS:               AS OF 2/28/99
    6 Months                        2.40%*
    1 Year                           6.59%
NET ASSETS:                 $342.4 million
30-DAY SEC YIELD:                    4.58%
INCEPTION DATE:                   12/30/86

       CALIFORNIA INSURED TAX-FREE
                  (BCINX)
TOTAL RETURNS:               AS OF 2/28/99
    6 Months                        2.23%*
    1 Year                           6.06%
NET ASSETS:                 $228.6 million
30-DAY SEC YIELD:                    3.97%
INCEPTION DATE:                   12/30/86

* Not annualized.

See  Total  Returns  on pages 4 and 14.  Investment  terms  are  defined  in the
Glossary on page 29.


2      1-800-345-2021


Market Perspective from Randall W. Merk
- --------------------------------------------------------------------------------
/photo of Randall W. Merk/
Randall W. Merk, chief investment officer of fixed income

MUNICIPAL BOND PERFORMANCE

     Amid several  powerful  shifts in market  sentiment,  municipal  securities
posted modestly  positive returns during the six months ended February 28, 1999.
Their  performance was primarily  dictated by changes in interest  rates.  Rates
fell in September  and October but crept higher  during much of the remainder of
the period.

     Short-  and  intermediate-term   municipal  bonds  outperformed   long-term
municipals  during  the  period  (see  the  accompanying   table).   Short-  and
intermediate-term yields fell slightly overall,  producing modest price gains in
these sectors of the market.  In contrast,  long-term  municipal yields actually
rose a little.

STRONGER-THAN-EXPECTED  ECONOMIC CONDITIONS

     Despite initial fears to the contrary,  the U.S. economy  continued to grow
at a healthy pace during the past six months.  At the start of the period,  bond
investors were  optimistic  because they felt that the Federal Reserve (the Fed)
would need to lower interest rates to stimulate U.S.  economic growth and combat
a slowing global economy.  Those  expectations,  and the three Fed interest rate
cuts  that  followed,   supported  a  bond  market  rally  that  lasted  through
mid-October.

     By November,  however,  the factors that had driven the bond rally began to
unwind.  The Fed's actions helped  restore  confidence in the U.S. stock market,
and  investors  began to shy away from  bonds.  In early  1999,  bond  investors
worried that the U.S. economy's impressive  growth--which climbed to a 6% annual
rate during the final three months of  1998--could  ignite  inflation and prompt
the Fed to reverse course.

MUNICIPALS GAIN GROUND

     In 1998, municipal bonds underperformed  Treasury bonds,  primarily because
of supply and demand  factors.  In the  municipal  market,  demand was sporadic,
while supply  increased as many issuers took  advantage of the low interest rate
environment.  In contrast,  Treasurys benefited from strong demand amid a global
flight to safety,  and supply shrank as the federal budget  surplus  reduced the
government's borrowing needs. By October,  municipal and Treasury yields were as
tight as they had been in a decade (see the chart at right).

     In the first two months of this year, however,  the tide turned in favor of
municipal  bonds,  thanks to  diminished  supply and firmer  demand.  Meanwhile,
flight-to-quality  demand in the  Treasury  market began to dry up. As the chart
illustrates, Treasury and municipal yields widened out quite a bit at the end of
the period.

     Even after outperforming Treasurys in recent months,  municipal bonds still
offer  attractive  yields  on a  tax-equivalent  basis.  As of  February  28, an
investor in the highest  federal tax bracket  (39.6%) could earn a  tax-adjusted
yield of nearly 7% on a 10-year AAA rated  municipal  bond, well above the 5.24%
yield on a 10-year U.S. Treasury bond.

[right margin]

"EVEN AFTER OUTPERFORMING TREASURYS IN RECENT MONTHS, MUNICIPAL BONDS STILL
OFFER ATTRACTIVE YIELDS ON A TAX-EQUIVALENT BASIS."

MUNICIPAL BOND INDEX RETURNS
FOR THE SIX MONTHS ENDED FEBRUARY 28, 1999
   LEHMAN THREE-YEAR
      MUNICIPAL INDEX              2.53%
   LEHMAN FIVE-YEAR GENERAL
      OBLIGATION INDEX             2.72%
   LEHMAN LONG-TERM
      MUNICIPAL INDEX              2.24%

Source: Lipper Inc., Frank Russell Co.

[line graph - data below]

10-YEAR TREASURY YIELDS VS.
10-YEAR AAA MUNICIPAL YIELDS
                    10-Year            10-Year
                 AAA Municipal         Treasury
8/31/98              4.27%              4.96%
9/15/98              4.23%              4.84%
9/30/98              4.14%              4.37%
10/15/98             4.02%              4.32%
10/31/98             4.10%              4.54%
11/15/98             4.22%              4.80%
11/30/98             4.16%              4.71%
12/15/98             4.10%              4.62%
12/31/98             4.14%              4.63%
1/15/99              4.15%              4.68%
1/31/99              4.05%              4.63%
2/15/99              4.08%              5.05%
2/28/99              4.15%              5.24%

Source: Bloomberg Financial Markets


                                                  www.americancentury.com      3


<TABLE>
<CAPTION>
California High-Yield Municipal--Performance
- --------------------------------------------------------------------------------

TOTAL RETURNS AS OF FEBRUARY 28, 1999

                    CALIFORNIA         LEHMAN LONG-TERM    CALIFORNIA MUNICIPAL DEBT FUNDS(2)
                HIGH-YIELD MUNICIPAL   MUNI BOND INDEX      AVERAGE RETURN   FUND'S RANKING
<S>                 <C>             <C>                 <C>                 <C>                  
6 MONTHS(1)             2.40%               2.24%               2.09%              --
1 YEAR                  6.59%               6.40%               5.43%         3 OUT OF 107
===========================================================================================
AVERAGE ANNUAL RETURNS
===========================================================================================
3 YEARS                 7.97%               7.99%               6.49%          3 OUT OF 91
5 YEARS                 7.22%               7.43%               6.04%          4 OUT OF 65
10 YEARS                8.18%               9.11%               7.58%          4 OUT OF 33
</TABLE>

The fund's inception date was 12/30/86.

(1) Returns for periods less than one year are not annualized.

(2) According to Lipper Inc., an independent mutual fund ranking service.

See pages 28-29 for more information about returns,  the comparative  index, and
Lipper fund rankings.

[mountain graph - data below]

GROWTH OF $10,000 OVER 10 YEARS
Value on 2/28/99
Lehman Long-Term Municipal Bond Index       $23,922
California High-Yield Municipal             $21,953

                  California            Lehman Long-Term
             High-Yield Municipal     Municipal Bond Index
DATE                 VALUE                  VALUE
2/28/89             $10,000                $10,000
2/28/90             $10,877                $11,108
2/28/91             $11,608                $12,141
2/29/92             $12,711                $13,521
2/28/93             $14,333                $15,730
2/28/94             $15,485                $16,716
2/28/95             $15,531                $16,876
2/29/96             $17,397                $18,996
2/28/97             $18,609                $20,170
2/28/98             $20,586                $22,483
2/28/99             $21,953                $23,922

$10,000 investment made 2/28/89

The graph at left shows the growth of a $10,000  investment  in the fund over 10
years,  while the graph below  shows the fund's  year-by-year  performance.  The
Lehman Long-Term  Municipal Bond Index is provided for comparison in each graph.
California High-Yield Municipal's total returns include operating expenses (such
as transaction  costs and management fees) that reduce returns,  while the total
returns of the index do not. Past performance does not guarantee future results.
Investment  return and principal value will fluctuate,  and redemption value may
be more or less than original cost.

[bar graph - data below]

ONE-YEAR RETURNS OVER 10 YEARS (PERIODS ENDED FEBRUARY 28)
                 California            Lehman Long-Term
            High-Yield Municipal     Municipal Bond Index
DATE               RETURN                 RETURN
2/28/90             8.77%                 11.08%
2/28/91             6.72%                  9.30%
2/29/92             9.50%                 11.37%
2/28/93            12.76%                 16.33%
2/28/94             8.04%                  6.27%
2/28/95             0.30%                  0.96%
2/29/96            12.01%                 12.56%
2/28/97             6.97%                  6.18%
2/28/98            10.62%                 11.47%
2/28/99             6.59%                  6.40%


4      1-800-345-2021


California High-Yield Municipal--Q&A
- --------------------------------------------------------------------------------
/photo of Steven Permut/

     An interview  with Steven  Permut,  a portfolio  manager on the  California
Tax-Free and Municipal funds investment team.

HOW DID CALIFORNIA  HIGH-YIELD  MUNICIPAL  PERFORM  DURING THE SIX-MONTH  PERIOD
ENDED FEBRUARY 28, 1999?

     California  High-Yield  Municipal  continued  to perform  well versus other
funds.  It returned  2.40%,  compared with the 2.09% average total return of the
108  "California  Municipal Debt Funds"  tracked by Lipper Inc. The  portfolio's
longer-term  returns also  consistently  beat the average  California  municipal
fund. (See the previous page for additional performance comparisons.)

     In addition,  California  High-Yield  Municipal  performed well in terms of
yield. The portfolio's  30-day SEC yield* as of February 28 was 4.58%,  compared
with the 3.75% yield of the average  California  municipal  fund,  according  to
Lipper.

WHAT INVESTMENT STRATEGIES HELPED CALIFORNIA HIGH-YIELD MUNICIPAL?

     There  were  several  factors  behind  the  portfolio's  relatively  strong
performance.  First,  we kept its  duration--which  measures its  sensitivity to
changes in interest  rates--"neutral," or in line with the average duration of a
peer group of similar funds.  The longer a fund's  duration,  the more the share
price  will  rise or fall  when  interest  rates  change.  The  shorter a fund's
duration, the less its share price will fluctuate in response to changing rates.

     Throughout  the period,  expectations  about U.S.  economic  growth and the
potential for more  inflation and higher  interest rates changed  rapidly.  That
uncertainty  translated  into bond  market  volatility  and  caused  funds  with
durations  that were too short or too long to suffer  compared  with  those that
remained "duration neutral."

WHAT WERE OTHER KEY FACTORS BEHIND THE FUND'S PERFORMANCE?

     About 45% of  California  High-Yield  Municipal's  portfolio  consisted  of
unrated  bonds.  These  bonds were helped by the  ongoing  tightening  of credit
spreads,  which  refers to a narrowing of the gap between the yields of bonds of
varying credit quality.  The lower a bond's credit quality (based on the ability
of its issuer to make timely interest and principal payments), the more yield it
generally carries as compensation for that risk.

     During  the  past  six  months,   however,   the  incremental   yield  that
lower-quality  (including  unrated)  bonds offered  diminished  for a variety of
reasons. First, issuers increasingly sought municipal bond insurance and the AAA
rating it  carries,  so there  were  fewer  unrated  bonds  that came to market.
Second,  unrated bonds were in strong demand by individual investors who desired
high yields in a declining * Although  California  High-Yield  Municipal's yield
may be  significantly  higher than the yields of other  fixed-income  funds that
purchase  higher-rated  securities,  this higher yield is generally based on the
greater credit risk of the securities in the fund's portfolio.

[right margin]

"CALIFORNIA HIGH-YIELD MUNICIPAL CONTINUED TO PERFORM WELL VERSUS OTHER FUNDS."

YIELDS AS OF FEBRUARY 28, 1999

  30-DAY SEC YIELD                 4.58%

  30-DAY TAX-EQUIVALENT YIELDS
    34.70% TAX BRACKET             7.01%
    37.42% TAX BRACKET             7.32%
    41.95% TAX BRACKET             7.89%
    45.22% TAX BRACKET             8.36%

PORTFOLIO AT A GLANCE
                            2/28/99           8/31/98
NUMBER OF SECURITIES          166               146
WEIGHTED AVERAGE
   MATURITY                20.0 YRS          20.8 YRS
AVERAGE DURATION            7.5 YRS           7.9 YRS
EXPENSE RATIO               0.54%*             0.54%

* Annualized.

Investment terms are defined in the Glossary on page 29.


                                                  www.americancentury.com      5


California High-Yield Municipal--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

interest  rate  environment.  Finally,  the continued  strength of  California's
economy led to fewer credit concerns and more credit upgrades.

HOW DID THAT ENVIRONMENT AFFECT CALIFORNIA HIGH-YIELD MUNICIPAL'S  UNRATED
BONDS?

     At the beginning of the period,  the spread  between  unrated bonds and the
highest-rated  AAA bonds was about 75 basis points  (0.75%--a basis point equals
0.01%).  By the end of  February,  that  spread had  narrowed  to about 65 basis
points.  As  yields  converged,   unrated  securities   generally   outperformed
higher-rated bonds in terms of total return.

THE FUND ALSO BENEFITED FROM SOME BONDS THAT WERE PREREFUNDED. WHAT IS
PREREFUNDING AND HOW DID IT HELP THE PORTFOLIO?

     Through a somewhat  complicated process, a municipal bond issuer that wants
to reduce the cost of its debt refinances older--usually high-yielding--bonds. A
prerefunded  bond isn't retired when it's  refinanced.  Instead,  it's backed by
U.S.  Treasury  securities and assumes a higher credit rating and a shorter call
date.  (The call date is the first  opportunity  the issuer has to refinance the
old bond.) A  shorter-maturity,  higher-rated  bond tends to have a lower  yield
than a longer-maturity,  lower-rated security. When several of our holdings went
from being long-maturity,  unrated bonds to  shorter-maturity,  AAA bonds, their
yields fell substantially and their prices--which move in the opposite direction
of yields--surged as much as 10-20%.

HEALTHCARE BONDS WERE ONE AREA OF THE CALIFORNIA MUNICIPAL MARKET THAT STRUGGLED
DURING THE PAST SIX MONTHS. WHAT WAS BEHIND THEIR PROBLEMS AND HOW DID IT AFFECT
THE FUND?

     When a large hospital system in Pennsylvania  filed for bankruptcy in 1998,
it cast a pall on the  entire  healthcare  sector.  Fortunately,  the fund had a
light  weighting   relative  to  its  peers  in  healthcare   bonds,  and  their
underperformance  had only a very slight effect on the fund's return. By the end
of the period, we selectively added some healthcare  bonds--such as those issued
by hospitals, long-term care facilities, and nursing homes--at what we felt were
attractive prices.

     This is a good time to remind  investors  that our sector  weightings are a
byproduct of our individual bond selection; we don't focus on underweighting and
overweighting  sectors.  At the core of our  security  selection  process  is an
experienced  research  team  that  attempts  to  stay  ahead  of the  market  by
identifying  under-  or  fairly-valued  securities  that have the  potential  to
appreciate as a result of improving credit quality.  At the same time, we try to
avoid  securities  that we view as expensive given their  prospects,  as well as
bonds that appear poised to suffer from future credit quality deterioration.

[left margin]

"ABOUT 45% OF CALIFORNIA HIGH-YIELD MUNICIPAL'S PORTFOLIO CONSISTED OF UNRATED
BONDS."

PORTFOLIO COMPOSITION BY
CREDIT RATING
               % OF FUND INVESTMENTS
              AS OF             AS OF
             2/28/99           8/31/98
AAA            28%               26%
AA             2%                 9%
A              13%               12%
BBB            12%               13%
UNRATED        45%               40%

Ratings provided by Standard & Poor's.  See Credit Rating  Guidelines on page 28
for more information.

"UNRATED BONDS WERE IN STRONG DEMAND BY INDIVIDUAL INVESTORS WHO DESIRED HIGH
YIELDS IN A DECLINING INTEREST RATE ENVIRONMENT."


6      1-800-345-2021

California High-Yield Municipal--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

WHAT'S YOUR OUTLOOK FOR THE CALIFORNIA HIGH-YIELD BOND MARKET?

     Let's start with interest rates, which likely will be the prime determinant
of municipal bond  performance.  Amid  contradictory  signs about U.S.  economic
growth,  inflationary  pressures,  and  Federal  Reserve  policy,  we think that
interest rates will stay in a "trading range." At the end of February,  interest
rates appeared to be on the high side of that trading range, which suggests they
could fall.

     From a credit  quality  standpoint,  we think the  California  economy will
remain robust, despite declining exports to  recession-afflicted  Asia. Weakened
overseas  demand for  California  goods has been  offset by rapid  growth in the
high-tech,  biotech,  and entertainment  sectors.  We think those growth sectors
will continue to post good results in 1999.  As a result,  our outlook calls for
continued  tight credit spreads and relatively  good  high-yield  municipal bond
performance.

GIVEN THAT OUTLOOK, WHAT WILL YOUR STRATEGY BE?

     We'll likely keep California High-Yield  Municipal's duration neutral until
we see more definitive signs about which way rates are headed.  Even then, we'll
only make slight adjustments to duration. We'll also continue to do what has led
to  the  fund's  strong  performance  over  the  past  10  years--use   thorough
bond-by-bond analysis to help identify opportunities and avoid problem areas.

[right margin]

"OUR SECTOR WEIGHTINGS ARE A BYPRODUCT OF OUR INDIVIDUAL BOND SELECTION; WE
DON'T FOCUS ON UNDERWEIGHTING AND OVERWEIGHTING SECTORS."

TOP FIVE SECTORS (AS OF 2/28/99)
                             % OF FUND INVESTMENTS
LAND BASED                             27%
COPS/LEASES                            15%
TAX ALLOCATION REVENUE                 11%
TRANSPORTATION REVENUE                  7%
PREREFUNDED                             7%

TOP FIVE SECTORS (AS OF 8/31/98)
                             % OF FUND INVESTMENTS
LAND BASED                             27%
TRANSPORTATION REVENUE                 16%
HOSPITAL REVENUE                       13%
TAX AND REVENUE
   ANTICIPATION NOTES                   9%
GENERAL OBLIGATION                      8%

Security types are defined on pages 29-30.


                                                  www.americancentury.com      7


Cal. High-Yield Municipal--Sched. of Investments
- --------------------------------------------------------------------------------

FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

MUNICIPAL SECURITIES--96.6%
               $2,845,000  Alameda Corridor Transportation
                              Auth. Rev., Series 1999 A,
                              5.25%, 10/1/21 (MBIA)                 $  2,912,082
                2,000,000  Alameda Public Financing Auth.
                              Local Agency Rev., Series
                              1996 A, (Community Facility
                              District No. 1), 7.00%, 8/1/19           2,205,400
                1,000,000  American Canyon Joint Powers
                              Financing Auth. Lease Rev.,
                              (Civic-Recreation Facilities),
                              6.40%, 6/1/22                            1,053,180
                4,000,000  Anaheim Public Financing Auth.
                              Lease Rev., Series 1997 C,
                              (Public Improvements), 5.90%,
                              9/1/18 (FSA)(1)                          1,487,200
                1,000,000  Association of Bay Area
                              Governments Finance Auth.
                              Rev. COP, (Episcopal Homes
                              Foundation), 5.125%, 7/1/18                984,260
                3,000,000  Association of Bay Area
                              Governments Finance Auth.
                              Rev. COP, (Rhoda Haas
                              Goldman Plaza), 5.125%,
                              5/15/23 (California Mortgage
                              Insurance)                               2,966,940
                  700,000  Bishop, Escalon & Lemoore Cities
                              COP, Series 1991 A, 7.70%,
                              5/1/11                                     738,339
                1,000,000  Blythe Financing Auth. Water
                              Rev., 5.75%, 4/1/28                      1,027,530
                1,800,000  Blythe Redevelopment No. 1 Tax
                              Allocation, 5.80%, 5/1/28                1,858,464
                4,000,000  Bonita Canyon Public Facilities
                              Financing Auth. Special Tax,
                              (Community Facilities District
                              No. 98-1), 5.375%, 9/1/28                3,894,360
                3,000,000  Brawley COP, (Water System
                              Improvement), 6.40%, 12/1/06,
                              Prerefunded at 102% of Par(2)(3)         3,514,860
                1,250,000  Brea Community Facilities District
                              Special Tax, (Olinda Heights
                              No. 1997-1), 5.80%, 9/1/28               1,256,863
                2,000,000  Brea Olinda Unified School
                              District Community Facilities
                              Special Tax, (No. 95-1), 5.75%,
                              9/1/28                                   2,020,280
                2,500,000  Brentwood Infrastructure
                              Refinancing Auth. Rev., Series
                              1998-1, 5.875%, 9/2/28                   2,513,975
                1,540,000  Brisbane COP, (Capital
                              Improvement Refinancing),
                              6.00%, 4/1/18                            1,613,751
                1,000,000  Cabrillo Unified School District
                              GO, Series 1996 A, 5.95%,
                              8/1/17 (AMBAC)(1)                          399,200

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $1,850,000  California Community College
                              Financing Auth. Lease Rev.,
                              Series 1998 A, 4.625%,
                              9/1/23 (MBIA)                         $  1,751,340
                  500,000  California Educational Facilities
                              Auth. Rev., (California Lutheran
                              University), 7.375%, 12/1/16               532,295
                2,000,000  California Educational Facilities
                              Auth. Rev., (Los Angeles College
                              Chiropractic), 5.60%, 11/1/17            2,072,240
                1,000,000  California Educational Facilities
                              Auth. Rev., (Mills College),
                              6.875%, 9/1/02, Prerefunded
                              at 102% of Par(3)                        1,128,200
                1,000,000  California Educational Facilities
                              Auth. Rev., (University of San
                              Diego), 4.98%, 10/1/15
                              (AMBAC)(1)                                 445,240
                1,000,000  California Educational Facilities
                              Auth. Rev., Series 1993 B,
                              (Pooled College and University
                              Financing), 6.125%, 6/1/09               1,068,190
                2,000,000  California Educational Facilities
                              Auth. Rev., Series 1997 N,
                              (Stanford University), 5.20%,
                              12/1/27                                  2,037,420
                2,500,000  California Educational Facilities
                              Auth. Rev., Series 1998 A,
                              (Pooled College and University
                              Projects), 5.625%, 7/1/23                2,565,200
                4,000,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1989 A, (Kaiser Permanente),
                              7.15%, 10/1/12 (AMBAC)(1)                2,111,320
                1,000,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1998 A, (Casa De Las
                              Campanas), 5.25%, 8/1/20
                              (California Mortgage Insurance)          1,006,990
                  445,000  California Housing Finance
                              Agency Home Mortgage Rev.,
                              Series 1989 B, 8.00%, 8/1/29               458,083
                  300,000  California Housing Finance
                              Agency Home Mortgage Rev.,
                              Series 1990 C, 7.60%, 8/1/30               313,074
                1,955,000  California Housing Finance
                              Agency Home Mortgage Rev.,
                              Series 1997 B, 6.10%, 2/1/28
                              (MBIA)                                   2,082,231
                1,500,000  California Housing Finance
                              Agency Home Mortgage Rev.,
                              Series 1997 E, 6.10%, 8/1/29
                              (AMBAC)                                  1,601,340
                3,500,000  California Housing Finance
                              Agency Multi-Unit Mortgage
                              Rev., Series 1992 C, 6.875%,
                              8/1/24                                   3,723,510

                                               See Notes to Financial Statements


8      1-800-345-2021


Cal. High-Yield Municipal--Sched. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $3,455,000  California Housing Finance
                              Agency Multifamily Mortgage
                              Rev., Series 1997 A,
                              5.95%, 8/1/28 (MBIA)                  $  3,634,695
                2,500,000  California Housing Finance
                              Agency Single Family Mortgage
                              Rev., Series 1997 A-1, 5.95%,
                              8/1/16                                   2,657,850
                2,960,000  California Housing Finance
                              Agency Single Family Mortgage
                              Rev., Series 1997 C-2, 5.65%,
                              2/1/25                                   3,066,086
                  400,000  California Public Capital
                              Improvements Financing Auth.
                              Rev., Series 1988 A, (Pooled
                              Project), 8.50%, 3/1/18                    407,472
                7,000,000  California Public Works Board
                              Lease Rev., Series 1998 A,
                              (California Community Colleges),
                              5.25%, 12/1/14                           7,356,720
                3,000,000  California Public Works Board
                              Lease Rev., Series 1998 A,
                              (California Community Colleges),
                              5.25%, 12/1/15                           3,135,150
                3,665,000  California State GO, 6.75%,
                              9/1/09(1)                                2,327,605
                1,555,000  California State and Local
                              Government Financing Auth.
                              Rev., (Marin Valley Mobile
                              Country-B), 7.50%, 10/1/24
                              (Acquired 3/13/97, Cost
                              $1,555,000)(4)                           1,658,501
                2,000,000  California State Public Works
                              Board Lease Rev. COP, Series
                              1993 D, (Department of
                              Corrections State Prisons),
                              5.25%, 6/1/15 (FSA)                      2,122,780
                7,000,000  California Statewide Communities
                              Development Auth. Lease Rev.,
                              Series 1997 A, (United Airlines),
                              5.70%, 10/1/33                           7,195,790
                1,000,000  California Statewide Communities
                              Development Auth. Rev. COP,
                              Series 1996 A, (Insurance
                              Health Facility, San Gabriel
                              Valley), 5.50%, 9/1/14
                              (California Mortgage Insurance)          1,024,920
                3,520,000  Central Valley Schools Financing
                              Auth. Tax and Rev. Anticipation
                              Notes, 3.50%, 1/27/00                    3,538,339
                  190,000  Clayton Improvement Bond Act
                              1915 Special Assessment,
                              (Oakhurst Assessment District),
                              8.00%, 9/2/14                              197,902
                   55,000  Clayton Improvement Bond Act
                              1915 Special Assessment,
                              Series 1988 A, (Oakhurst
                              Assessment District), 8.40%,
                              9/2/10                                      57,497

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $2,785,000  Coachella Redevelopment Agency
                              Tax Allocation, (Project Area
                              No. 3), 5.875%, 12/1/28               $  2,755,730
                4,500,000  Colton Public Financing Auth.
                              Rev., (Electric System), 7.50%,
                              10/1/03, Prerefunded at
                              101% of Par(3)                           5,259,825
                1,320,000  Compton Sewer Rev., 5.375%,
                              9/1/23                                   1,309,334
                  750,000  Contra Costa County Public
                              Financing Auth. Tax Allocation
                              Rev., Series 1992 A, 7.10%,
                              8/1/22                                     818,303
                1,000,000  Contra Costa County Public
                              Financing Lease Rev., Series
                              1999 A, 5.25%, 6/1/14
                              (MBIA)(5)                                1,056,800
                1,250,000  Contra Costa County Public
                              Financing Lease Rev., Series
                              1999 A, 5.25%, 6/1/15
                              (MBIA)(5)                                1,314,700
                  675,000  Corcoran COP, 8.75%, 6/1/16
                              (Acquired 4/28/92, Cost
                              $675,000)(4)                               744,471
                1,750,000  Corona Community Facilities
                              District Special Tax, (Eagle
                              Glen), 5.875%, 9/1/23                    1,745,468
                1,000,000  Davis Community Facility District
                              No. 1991-2 Special Tax,
                              Series 1992 B, 7.80%,
                              9/1/02, Prerefunded at 103%
                              of Par(3)                                1,164,840
                1,500,000  Del Mar Race Track Auth. Rev.,
                              6.20%, 8/15/11                           1,625,400
                  275,000  Fairfield Housing Auth. Rev.,
                              (Creekside Estates), 5.50%,
                              9/1/12                                     273,961
                  300,000  Fairfield Housing Auth. Rev.,
                              (Creekside Estates), 5.55%,
                              9/1/13                                     298,815
                  340,000  Fairfield Housing Auth. Rev.,
                              (Creekside Estates), 5.55%,
                              9/1/14                                     338,599
                1,215,000  Fairfield Housing Auth. Rev.,
                              (Creekside Estates), 5.625%,
                              9/1/23                                   1,208,585
                3,400,000  Fairfield Redevelopment Agency
                              Tax Allocation, 5.00%, 8/1/04            3,383,136
                3,000,000  Folsom Public Financing Auth.
                              Rev., Series1997 A, 6.875%,
                              9/2/19                                   3,105,390
                2,000,000  Folsom Special Tax, (Community
                              Facilities District No. 11),
                              5.65%, 9/1/18                            1,961,780
                1,750,000  Folsom Special Tax, (Community
                              Facilities District No. 11),
                              5.75%, 9/1/23                            1,712,865

See Notes to Financial Statements


                                                  www.americancentury.com      9


Cal. High-Yield Municipal--Sched. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $1,500,000  Folsom Special Tax, (Community
                              Facility District No. 7), 7.25%,
                              9/1/21                                $  1,626,600
                2,500,000  Fontana Redevelopment Agency
                              Tax Allocation, Series 1994 B,
                              (Jurupa Hills), 7.70%, 1/1/19            2,778,100
                1,040,000  Foothill-De Anza Community
                              College District COP, (Campus
                              Center), 7.35%, 3/1/07                   1,145,581
                2,500,000  Foster City Redevelopment
                              Agency Tax Allocation, (Metro
                              Center), 6.75%, 9/1/20                   2,765,850
                3,065,000  Fremont Public Financing Auth.
                              Rev., Series 1998 A, 5.50%,
                              9/2/11                                   3,069,076
                1,185,000  Gateway Improvement Auth. Rev.,
                              Series 1995 A, (Marin City
                              Community Facility), 7.75%,
                              9/1/05, Prerefunded at 102%
                              of Par(3)                                1,462,468
                1,250,000  High Desert Memorial Health
                              Care District Rev., 5.50%,
                              10/1/15                                  1,219,000
                2,000,000  Industry Urban Redevelopment
                              Agency Tax Allocation,
                              (Project 3), 6.90%, 11/1/16              2,181,780
                  985,000  Irvine Improvement Bond 1915
                              Special Assessment, Series
                              1992 A, (District No. 89-9),
                              7.40%, 9/2/17                            1,010,344
                1,000,000  La Mesa Improvement Bond Act
                              1915 Special Assessment,
                              (Limited Obligation, District
                              No. 98-1), 5.75%, 9/2/23                 1,007,530
                2,000,000  La Mirada Redevelopment Agency
                              Special Tax Rev., (Community
                              Facilities District No. 89-1),
                              5.70%, 10/1/20                           2,020,000
                3,250,000  Lake Elsinore School Financing
                              Auth. Rev., (Horsethief Canyon),
                              5.625%, 9/1/16                           3,239,210
                1,000,000  Lake Elsinore School Financing
                              Auth. Rev., 6.125%, 9/1/19               1,061,400
                1,000,000  Lake Elsinore Unified School
                              District Community Facilities
                              Special Tax, (No. 88-1), 8.25%,
                              9/1/01, Prerefunded at 102%
                              of Par(3)                                1,135,380
                2,195,000  Las Virgenes Unified School
                              District GO, Series 1998 A,
                              5.19%, 11/1/20 (MBIA)(1)                   726,589
                3,440,000  Long Beach Harbor Rev.,
                              5.375%, 5/15/20 (MBIA)                   3,508,387
                1,000,000  Long Beach Industrial
                              Development Rev., Series
                              1998 A, (CSU Foundation),
                              5.25%, 2/1/13                            1,014,920

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $3,590,000  Long Beach Water Rev., Series
                              1997 A, 5.00%, 5/1/24
                              (MBIA)                                $  3,571,906
                2,000,000  Los Angeles Community Facilities
                              District Special Tax, (Cascades
                              Business Park), 6.40%, 9/1/22            2,092,020
                   80,000  Los Angeles County Single Family
                              Mortgage Rev., (GNMA
                              Mortgage, Issue B), 9.00%,
                              12/1/20 (GNMA)                              83,730
                1,000,000  Los Angeles County Transportation
                              Commission Sales Tax Rev.,
                              Series 1991 B, 6.50%, 7/1/13             1,081,280
                5,000,000  Los Angeles Harbor Department
                              Rev., Series 1996 B, 5.375%,
                              11/1/19 (MBIA)                           5,113,250
                   15,000  Los Angeles Home Mortgage
                              Rev., 9.00%, 6/15/18                        15,184
                2,150,000  Los Angeles State Building Auth.
                              Lease Rev. COP, Series
                              1993 A, 5.625%, 5/1/11                   2,392,929
                3,000,000  Los Angeles Unified School
                              District COP, Series 1996 A,
                              5.50%, 10/1/16 (FSA)                     3,163,380
                2,000,000  Metropolitan Water District
                              Southern California Waterworks
                              Rev., Series 1998 A, 4.75%,
                              7/1/22                                   1,930,100
                4,145,000  Milpitas Improvement Bond Act
                              1915 Special Assessment,
                              (Local Improvement District 18),
                              5.65%, 9/2/14                            4,244,066
                3,000,000  Milpitas Improvement Bond Act
                              1915 Special Assessment,
                              Series 1996 A, (Local
                              Improvement District 18),
                              6.75%, 9/2/16                            3,242,880
                2,020,000  Milpitas Improvement Bond Act
                              1915 Special Assessment,
                              Series 1998 A, (Local
                              Improvement District 18),
                              5.85%, 9/2/18                            2,065,854
                1,500,000  Modesto Irrigation District
                              Financing Auth. Rev., Series
                              1998 D, (Domestic Water),
                              4.75%, 9/1/22 (AMBAC)                    1,447,470
                2,000,000  Monterey Park Public Financing
                              Auth. Tax Allocation Rev.,
                              (Merged Redevelopment),
                              5.30%, 3/1/28                            1,939,500
                2,000,000  Novato Community Facility
                              District No. 1 Special Tax,
                              (Vintage Oaks), 7.20%, 8/1/15            2,196,640
                5,000,000  Oceanside Mobile Home Park
                              Financing Auth. Rev., (Laguna
                              Vista Mobile Estates), 5.80%,
                              3/1/28                                   5,068,600

                                               See Notes to Financial Statements


10      1-800-345-2021


Cal. High-Yield Municipal--Sched. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $1,000,000  Orange County Community
                              Facilities District Special Tax,
                              Series 1993 A, (No. 87-5E),
                              7.30%, 8/15/18                        $  1,079,520
                1,000,000  Pioneer Union Elementary School
                              District GO, 7.50%, 8/1/14               1,060,050
                1,645,000  Pittsburg Infrastructure Financing
                              Auth. Rev. Improvement Special
                              Assessment, Series 1998 A,
                              5.55%, 9/2/16                            1,669,609
                3,500,000  Pittsburg Redevelopment Agency
                              Tax Allocation, (Los Medanos
                              Community Development),
                              6.25%, 8/1/26(2)                         3,827,495
                5,000,000  Pomona Improvement Bond Act
                              1915, (Rio Rancho Assessment
                              District), 7.50%, 9/2/21                 5,458,450
                  475,000  Pomona Public Financing Auth.
                              Rev., Series 1994 L, (Southwest
                              Pomona Redevelopment),
                              5.70%, 2/1/04, Prerefunded at
                              102% of Par(3)                             525,260
                1,025,000  Pomona Public Financing Auth.
                              Rev., Series 1994 L, (Southwest
                              Pomona Redevelopment),
                              5.70%, 2/1/13                            1,089,872
                1,305,000  Poway Community Facilities
                              District Special Tax, (No. 88-1,
                              Parkway Business Center),
                              6.75%, 8/15/15                           1,424,525
                2,250,000  Rancho Mirage Joint Powers
                              Financing Auth. COP,
                              (Eisenhower Memorial Hospital),
                              7.00%, 3/1/02, Prerefunded at
                              102% of Par(3)                           2,513,790
                1,815,000  Redondo Beach Public Financing
                              Auth. Rev., (South Bay Center
                              Redevelopment), 7.125%,
                              7/1/26                                   2,017,227
                1,000,000  Richmond Joint Powers Financing
                              Auth. Rev. COP, Series 1995 A,
                              5.25%, 5/15/13                           1,037,280
                3,165,000  Richmond Redevelopment Agency
                              Tax Allocation, Series 1998 A,
                              (Harbour Redevelopment),
                              4.75%, 7/1/23 (MBIA)                     3,051,946
                  500,000  Roseville Community Facilities
                              District No. 2 Special Tax,
                              8.25%, 9/1/00, Prerefunded at
                              102% of Par(3)                             546,465
                5,200,000  Roseville Special Tax, (Roseville
                              Community Facilities District 1),
                              5.75%, 9/1/23                            5,156,060
                2,200,000  Sacramento County Improvement
                              Bond Act 1915 Special
                              Assessment, (Sunrise/Cordova
                              Reassessment), 5.30%, 9/2/09             2,256,518
                  635,000  Sacramento County Special Tax,
                              (Community Facilities District
                              No. 1), 5.60%, 9/1/07                      668,661

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $  645,000  Sacramento County Special Tax,
                              (Community Facilities District
                              No. 1), 5.70%, 9/1/08                 $    685,016
                2,250,000  Sacramento County Special Tax,
                              (Community Facilities District
                              No. 1), 5.70%, 12/1/20                   2,271,218
                1,500,000  Sacramento County Special Tax,
                              (Community Facilities District
                              No. 1), 6.30%, 9/1/21                    1,577,340
                3,970,000  Sacramento Municipal Utility
                              District Electric Rev., Series
                              1997 K, 5.25%, 7/1/24
                              (AMBAC)                                  4,155,399
                1,400,000  Salinas COP, Series 1997 A,
                              (Capital Improvement), 5.70%,
                              10/1/28                                  1,465,114
                  750,000  Salinas Improvement Bond Act
                              1915 Special Assessment,
                              (District No. 90-1, Series
                              C-185), 5.45%, 9/2/13                      761,663
                1,000,000  Salinas Improvement Bond Act
                              1915 Special Assessment,
                              (District No. 90-1, Series
                              C-185), 5.50%, 9/2/14                    1,010,930
                1,915,000  Salinas Improvement Bond Act
                              1915 Special Assessment,
                              (Harden Ranch Assessment
                              District 94-1), 6.875%, 9/2/11           2,040,681
                1,000,000  San Diego Community Facilities
                              District No. 1 Special Tax,
                              Series 1995 B, 7.10%, 9/1/05,
                              Prerefunded at 102% of Par(3)            1,197,480
                3,990,000  San Diego County Improvement
                              Bond Act 1915 GO, 6.25%,
                              9/2/12                                   4,127,296
                4,000,000  San Francisco Bay Area Rapid
                              Transit District Sales Tax Rev.,
                              4.75%, 7/1/23 (AMBAC)                    3,862,560
                1,615,000  San Francisco Building Auth.
                              Lease Rev., Series 1996 A,
                              (San Francisco Civic Center
                              Complex), 5.25%, 12/1/16
                              (AMBAC)                                  1,679,309
                1,500,000  San Francisco City and County
                              Airport Commission International
                              Airport Rev., 5.90%, 5/1/26              1,596,345
                3,000,000  San Francisco City and County
                              Airport Commission International
                              Airport Rev., Issue 20, 4.50%,
                              5/1/18 (MBIA)                            2,839,170
                1,970,000  San Francisco City and County
                              Airport Commission International
                              Airport Rev., Issue 21, 4.50%,
                              5/1/23 (MBIA)                            1,833,873
                1,250,000  San Francisco City and County
                              Redevelopment Agency Lease
                              Rev., (George R. Moscone),
                              7.05%, 7/1/13(1)                           620,213

See Notes to Financial Statements


                                                 www.americancentury.com      11


Cal. High-Yield Municipal--Sched. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $7,810,000  San Francisco Community College
                              District COP, Series 1998 A,
                              5.95%, 7/1/18                         $  7,811,640
                1,780,000  San Jose Finance Auth. Rev.
                              COP, Series 1993 C,
                              (Convention Center), 6.30%,
                              9/1/09                                   1,927,064
                1,000,000  San Marcos Public Facilities Auth.
                              Rev., 5.80%, 9/1/27                      1,002,070
                5,000,000  San Marcos Public Facilities Auth.
                              Rev., Series 1993 A, (Civic
                              Center), 6.20%, 8/1/22                   5,160,550
                2,365,000  San Marcos Redevelopment
                              Agency Tax Allocation, Series
                              1998 A, (Affordable Housing),
                              5.65%, 10/1/28                           2,441,981
                3,250,000  San Marcos Unified School
                              District Special Tax, (Community
                              Facilities District No. 5), 5.60%,
                              9/1/29(5)                                3,242,883
                1,540,000  San Mateo County Joint Powers
                              Auth. Lease Rev., Series
                              1997 A, 5.00%, 7/15/22 (FSA)             1,532,562
                5,000,000  Santa Ana COP, (City Hall
                              Expansion), 4.70%, 1/1/28
                              (FSA)                                    4,760,900
                1,000,000  Santa Clara Improvement Bond
                              Act 1915 Special Assessment,
                              (Convention Center), 5.10%,
                              9/2/09                                   1,010,460
                1,000,000  Santa Clara Improvement Bond
                              Act 1915 Special Assessment,
                              (Convention Center), 5.15%,
                              9/2/10                                   1,010,910
                1,300,000  Santa Rosa Improvement Bond
                              Act 1915 Special Assessment,
                              Series 1999 A, (Fountaingrove
                              Parkway), 5.70%, 9/2/19                  1,297,647
                1,500,000  Santa Rosa Improvement Bond
                              Act 1915, Series 1998 A,
                              (Skyhawk Assessment District),
                              5.75%, 9/2/20                            1,519,455
                1,615,000  South San Francisco
                              Redevelopment Agency Tax
                              Allocation, 7.60%, 9/1/02,
                              Prerefunded at 102% of Par(3)            1,856,378
                  455,000  Southern California Housing
                              Finance Auth. Single Family
                              Mortgage Rev., Series 1991 A,
                              (GNMA & FNMA
                              Mortgage-Backed Securities),
                              7.35%, 9/1/24 (GNMA/FNMA
                              Collateral)                                477,745
                  500,000  Southern California Public Power
                              Auth. Rev., (Pooled Project),
                              6.75%, 7/1/10 (FSA)                        610,310
                2,400,000  Southern California Public Power
                              Auth. Rev., (Transmission),
                              6.35%, 7/1/14 (MBIA)(1)                  1,149,432

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $1,250,000  Southern California Public Power
                              Auth. Rev., (Transmission),
                              6.35%, 7/1/15 (MBIA)(1)               $    563,375
                2,000,000  Stockton Community Facilities
                              District Special Tax Rev., Series
                              1998 A, (Mello Roos-Weston
                              Ranch), 5.80%, 9/1/14                    2,049,180
                1,100,000  Stockton Community Facilities
                              District Special Tax Rev.,
                              Series 1998 A, (Mello
                              Roos-Weston Ranch), 6.00%,
                              9/1/24                                   1,130,877
                2,000,000  Stockton East Water District COP, 
                              Series 1997 A, 4.75%,
                              4/1/22 (AMBAC)                           1,927,880
                1,770,000  Tehama Community COP, (Social
                              Services Building), 7.00%,
                              10/1/05, Prerefunded at
                              102% of Par(3)                           2,117,823
                1,655,000  Torrance Hospital Rev., (Little
                              County of Mary Hospital),
                              6.875%, 7/1/15, Prerefunded
                              at 102% of Par(3)                        1,859,078
                1,180,000  Torrance Redevelopment Agency
                              Tax Allocation, Series 1998 B,
                              5.625%, 9/1/28                           1,185,652
                2,255,000  Tracy Operating Partnership Joint
                              Powers Auth. Rev., (Jr. Lien
                              Assessment District 87-3),
                              6.375%, 9/2/11                           2,312,863
                1,565,000  Twentynine Palms Water District
                              COP, 7.10%, 8/1/22                       1,697,133
                2,000,000  Union City Special Tax,
                              (Community Facilities District
                              No. 1997-1), 5.80%, 9/1/28               2,039,700
                2,250,000  Vacaville Improvement Bond Act
                              1915 Special Assessment,
                              (Northeast Sector Assessment
                              District A), 7.00%, 9/2/22               2,370,465
                3,850,000  Vacaville Special Tax, Series
                              1998 C, (Community Facilities
                              District No. 2), 5.60%, 9/1/15           3,942,208
                5,000,000  Vallejo Hiddenbrooke Improvement
                              District No. 1 Rev., 6.50%,
                              9/1/31                                   5,020,850
                1,645,000  Vallejo Multifamily Housing Rev.,
                              Series 1998 B, (Solano
                              Affordable Housing), 8.25%,
                              4/1/39 (Acquired 10/21/98,
                              Cost $1,645,000)(4)                      1,596,292
                2,000,000  West Contra Costa Unified
                              School District COP, 7.125%,
                              1/1/24                                   2,250,420
                2,000,000  West Sacramento Redevelopment
                              Agency Tax Allocation, 4.75%,
                              9/1/27 (MBIA)                            1,922,980

                                               See Notes to Financial Statements


12      1-800-345-2021


Cal. High-Yield Municipal--Sched. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $1,520,000  Windsor Redevelopment Agency
                              Tax Allocation, 6.875%,
                              9/1/15                                $  1,682,503
                                                                   -------------
TOTAL MUNICIPAL SECURITIES                                           330,011,271
                                                                   -------------
   (Cost $316,705,622)

SHORT-TERM MUNICIPAL SECURITIES--3.4%
                1,000,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1996 B, VRDN, 3.10%,
                              3/1/99                                   1,000,000
                2,000,000  California Pollution Control
                              Financing Auth. Solid Waste
                              Disposal Rev., Series 1996 A,
                              (Shell Martinez Refining), VRDN,
                              3.00%, 3/1/99                            2,000,000

Principal Amount                                                        Value
- --------------------------------------------------------------------------------

               $1,300,000  California State Economic
                              Development Financing Auth.
                              Rev., Series 1998 C, VRDN,
                              3.50%, 3/1/99                            1,300,000
                5,900,000  California Statewide Community
                              Development Auth. Rev.,
                              Floating Rate Trust Receipts,
                              2.95%, 3/3/99 (Acquired
                              2/16/99-2/26/99, Cost
                              $5,900,000)(4)(6)                        5,900,000
                1,300,000  Irvine Ranch Water District Rev.,
                              Series 1993 A, VRDN, 3.00%,
                              3/1/99                                   1,300,000
                                                                   -------------
TOTAL SHORT-TERM MUNICIPAL SECURITIES                                 11,500,000
                                                                   -------------
   (Cost $11,500,000)

TOTAL INVESTMENT SECURITIES--100.0%                                 $341,511,271
                                                                   =============
   (Cost $328,205,622)

NOTES TO SCHEDULE OF INVESTMENTS

AMBAC = AMBAC Assurance Corporation

COP = Certificates of Participation

FNMA = Federal National Mortgage Association

FSA = Financial Security Assurance Inc.

GNMA = Government National Mortgage Association

GO = General Obligation

MBIA = MBIA Insurance Corp.

VRDN = Variable Rate Demand Note.  Interest  reset date is indicated and used in
calculating the weighted  average  portfolio  maturity.  Rate shown is effective
February 28, 1999.

(1)  Security is a zero-coupon municipal bond. The yield to maturity at purchase
     is  indicated.  Zero-coupon  securities  are  purchased  at  a  substantial
     discount from their value at maturity.
(2)  Security,  or a portion thereof,  has been segregated at the custodian bank
     for a when-issued security.
(3)  Escrowed  to  maturity  in U.S.  Government  securities  or state and local
     government securities.
(4)  Security was purchased  under Rule 144A of the Securities Act of 1933 or is
     a private  placement,  and unless registered under the Act or exempted from
     registration,  may only be sold to qualified institutional  investors.  The
     aggregate  value  of  restricted  securities  at  February  28,  1999,  was
     $9,899,264 which represented 2.9% of net assets.
(5)  When-issued security.
(6)  Interest  reset date is  indicated  and used in  calculating  the  weighted
     average portfolio maturity. Rate shown is effective February 28, 1999.

- --------------------------------------------------------------------------------
UNDERSTANDING  THE  SCHEDULE  OF  INVESTMENTS--This  schedule  tells  you  which
investments your fund owned on the last day of the reporting period.

The schedule includes:

* a list of each investment

* the principal amount of each investment

* the market value of each investment

See Notes to Financial Statements


                                                 www.americancentury.com      13


<TABLE>
<CAPTION>
California Insured Tax-Free--Performance
- --------------------------------------------------------------------------------

TOTAL RETURNS AS OF FEBRUARY 28, 1999

                 CALIFORNIA INSURED   LEHMAN LONG-TERM   CALIF. INSURED MUNICIPAL DEBT FUNDS(2)
                     TAX-FREE          MUNI BOND INDEX     AVERAGE RETURN    FUND'S RANKING
<S>                 <C>            <C>                 <C>                <C>                    
6 MONTHS(1)            2.23%               2.24%              2.19%                --
1 YEAR                 6.06%               6.40%              5.33%            3 OUT OF 26
=============================================================================================
AVERAGE ANNUAL RETURNS
=============================================================================================
3 YEARS                6.59%               7.99%              6.21%            4 OUT OF 25
5 YEARS                6.50%               7.43%              5.93%            3 OUT OF 17
10 YEARS               7.98%               9.11%              7.93%            3 OUT OF 7
</TABLE>

The fund's inception date was 12/30/86.

(1) Returns for periods less than one year are not annualized.

(2) According to Lipper Inc., an independent mutual fund ranking service.

See pages 28-29 for more information about returns,  the comparative  index, and
Lipper fund rankings.

[mountain graph - data below]

GROWTH OF $10,000 OVER 10 YEARS
Value on 2/28/99
Lehman Long-Term Municipal Bond Index   $23,922
California Insured Tax-Free             $21,557

                  California           Lehman Long-Term
               Insured Tax-Free      Municipal Bond Index
DATE                 VALUE                  VALUE
2/28/89             $10,000                $10,000
2/28/90             $10,873                $11,108
2/28/91             $11,787                $12,141
2/29/92             $12,897                $13,521
2/28/93             $14,983                $15,730
2/28/94             $15,726                $16,716
2/28/95             $15,890                $16,876
2/29/96             $17,728                $18,996
2/28/97             $18,576                $20,170
2/28/98             $20,318                $22,483
2/28/99             $21,557                $23,922

$10,000 investment made 2/28/89

The graph at left shows the growth of a $10,000  investment  in the fund over 10
years,  while the graph below  shows the fund's  year-by-year  performance.  The
Lehman Long-Term  Municipal Bond Index is provided for comparison in each graph.
California  Tax-Free Insured's total returns include operating expenses (such as
transaction  costs and  management  fees) that reduce  returns,  while the total
returns of the index do not. Past performance does not guarantee future results.
Investment  return and principal value will fluctuate,  and redemption value may
be more or less than original cost.

[bar graph - data below]

ONE-YEAR RETURNS OVER 10 YEARS (PERIODS ENDED FEBRUARY 28)
                 California            Lehman Long-Term
              Insured Tax-Free       Municipal Bond Index
DATE               RETURN                 RETURN
2/28/90             8.73%                 11.08%
2/28/91             8.41%                  9.30%
2/29/92             9.41%                 11.37%
2/28/93            16.18%                 16.33%
2/28/94             4.96%                  6.27%
2/28/95             1.04%                  0.96%
2/29/96            11.57%                 12.56%
2/28/97             4.78%                  6.18%
2/28/98             9.38%                 11.47%
2/28/99             6.06%                  6.40%


14      1-800-345-2021


California Insured Tax-Free--Q&A
- --------------------------------------------------------------------------------
/photo of Dave MacEwen/

     An  interview  with Dave  MacEwen,  a portfolio  manager on the  California
Tax-Free and Municipal funds investment team.

HOW DID THE FUND PERFORM DURING THE SIX-MONTH PERIOD ENDED FEBRUARY 28, 1999?

     California  Insured Tax-Free posted a 2.23% total return,  which was better
than the 2.19% average total return of its peer  group--26  "California  Insured
Municipal  Debt Funds"  tracked by Lipper Inc.  (See the previous page for other
fund comparisons.)

     California  Insured  Tax-Free also  produced  more current  income than its
peers.  The fund's  30-day SEC yield as of February 28 was 3.97%,  compared with
the 3.41% yield of the average California  insured municipal fund,  according to
Lipper.

WHAT STRATEGIES DETERMINED THE FUND'S PERFORMANCE?

     One of the main contributors to California Insured  Tax-Free's  performance
was its longer-than-average  duration.  Duration measures how sensitive a fund's
share price is to changes in interest rates. (The longer a fund's duration,  the
more the share price will rise or fall as interest  rates change.) We maintained
a slightly long duration because we believed  interest rates would move lower as
a slowing global economy suppressed inflationary pressures.

     The fund's longer-than-average  duration served us well when interest rates
declined--last autumn and again in January--but  detracted from performance when
rates rose like they did in February.  It's important to note, however,  that we
make  only  small   adjustments   to  duration   based  on  our  interest  rates
expectations.  We typically  keep  duration  within a year of that of California
Insured  Tax-Free's   benchmark  (a  group  of  funds  with  similar  investment
objectives).

WHY DID YOU CHOOSE TO MAKE CALIFORNIA  TAX-FREE'S  DURATION SLIGHTLY LONGER THAN
ITS BENCHMARK'S?

     We believed the  relationship  between  municipal  and Treasury bond yields
indicated that municipal yields were relatively high. As a result,  we felt that
municipal  yields would likely decline.  Historically  speaking,  municipal bond
yields  average about 83% of Treasury  yields.  Six months ago,  some  municipal
bonds actually yielded more than Treasury bonds with comparable maturities.

     The relatively  high yields of municipal  bonds were a function of too much
supply and too little  demand.  On the supply side, a near-record  amount of new
municipals was issued in 1998. On the demand side,  municipals  didn't enjoy the
same strong demand from foreign  investors--who  can't benefit from  municipals'
tax-exempt  status--that drove Treasury prices higher and their yields lower. By
the end of the period, municipal yields had fallen back to about 90% of Treasury
yields, but that still represented good value from a historical standpoint.

[right margin]

"ONE OF THE MAIN CONTRIBUTORS TO CALIFORNIA INSURED TAX-FREE'S PERFORMANCE
WAS ITS LONGER-THAN-AVERAGE DURATION."

YIELDS AS OF FEBRUARY 28, 1999

  30-DAY SEC YIELD               3.97%

  30-DAY TAX-EQUIVALENT YIELDS
    34.70% TAX BRACKET           6.08%
    37.42% TAX BRACKET           6.34%
    41.95% TAX BRACKET           6.84%
    45.22% TAX BRACKET           7.25%

PORTFOLIO AT A GLANCE
                             2/28/99           8/31/98
NUMBER OF SECURITIES           76                71
WEIGHTED AVERAGE
MATURITY                    18.0 YRS          17.9 YRS
  AVERAGE DURATION           8.6 YRS           8.5 YRS
EXPENSE RATIO                0.51%*             0.51%

* Annualized.

Investment terms are defined in the Glossary on page 29.


                                                 www.americancentury.com      15


California Insured Tax-Free--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

WHAT OTHER MANAGEMENT TECHNIQUES DID YOU FOCUS ON DURING THE PERIOD?

     We  continued  to  emphasize  call  protection  by buying  discount  bonds.
Discount bonds offer a degree of call protection because they are less likely to
be  called  away by  municipal  bond  issuers  who  want to  refinance  at lower
rates--the  municipal equivalent of a homeowner  refinancing a mortgage.  That's
due to the fact that they carry coupons--the  interest rate the issuer agrees to
pay  bondholders--that are lower than prevailing interest rates. While calls can
be beneficial  for bond  issuers,  they can spell  trouble for  bondholders  who
effectively  have the  duration  of their  municipal  portfolio  shortened.  Our
position in discount  bonds aided the fund's  performance  when rates fell,  but
detracted from it when rates were moving higher.

WHAT'S YOUR OUTLOOK FOR INTEREST RATES?

     In our view,  interest rates could resume their decline this year, although
we wouldn't be  surprised  to see them  temporarily  drift  higher as  investors
digest news about strong  growth and low  unemployment.  While the U.S.  economy
grew  much  faster  than  expected  in the  fourth  quarter  of  last  year  and
unemployment hit 29-year lows, inflation remained in check.

     Continued low inflation  owed much to slowing  economies in the rest of the
world.  Many  Asian  countries  are  struggling  through  recessions,  with some
teetering toward  depression.  Latin America also faces ongoing challenges as it
struggles with inflation,  slowing growth, and currency  problems.  Europe shows
signs of slowing down in reaction to problems  encountered with the introduction
of the continent's unified currency, the euro.

     With such anemic economic growth  overseas,  we believe we're likely to see
excess  global  capacity for all types of goods and  services,  and as a result,
practically no pricing pressures.  Combine that with increasing productivity due
to technological improvements,  and it appears unlikely that inflation will be a
problem any time soon.

WHAT DOES THAT OUTLOOK MEAN FOR THE MUNICIPAL MARKET?

     Continued low inflation and declining  interest rates would  certainly help
boost the market.  But supply and demand will also determine the  performance of
municipal  bonds.  Municipals   underperformed  Treasurys  when  interest  rates
declined  last year in large part  because of the surge in demand for  Treasurys
from overseas investors and increased municipal supply. So far in 1999, however,
we've  already seen signs that the supply of  California  municipals is tapering
off and  demand  has  firmed,  which we  believe  could  set the stage for lower
municipal  yields.  On the demand  side,  the relative  cheapness of  municipals
compared with Treasurys may attract investors who want tax- free income.

[left margin]

"WE CONTINUED TO EMPHASIZE CALL PROTECTION BY BUYING DISCOUNT BONDS."

TOP FIVE SECTORS (AS OF 2/28/99)
                            % OF FUND INVESTMENTS
COPS/LEASES                           24%
ELECTRIC REVENUE                      14%
WATER AND SEWER REVENUE               12%
TAX ALLOCATION REVENUE                 9%
GENERAL OBLIGATION                     7%

TOP FIVE SECTORS (AS OF 8/31/98)
                            % OF FUND INVESTMENTS
COPS/LEASES                           24%
ELECTRIC REVENUE                      16%
WATER AND SEWER REVENUE               14%
TAX ALLOCATION REVENUE                11%
HOSPITAL REVENUE                       7%

Security types are defined on pages 29-30.


16      1-800-345-2021


California Insured Tax-Free--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

WITH THIS OUTLOOK IN MIND, WHAT ARE YOUR PLANS FOR CALIFORNIA INSURED TAX-FREE?

     We will likely keep the portfolio's  duration a bit longer than the average
California  insured  municipal  fund.  That should be a positive  for returns if
municipal bond yields decline, as we expect. In addition,  we'll still emphasize
call-protected  securities,  such as discount  bonds.  Other than that,  we will
continue to monitor the California  municipal market to uncover  securities that
we believe offer good relative values and attractive yields.

[right margin]

"WE'VE ALREADY SEEN SIGNS THAT THE SUPPLY OF CALIFORNIA MUNICIPALS IS TAPERING
OFF AND DEMAND HAS FIRMED, WHICH WE BELIEVE COULD SET THE STAGE FOR LOWER
MUNICIPAL YIELDS."

PORTFOLIO COMPOSITION BY
CREDIT RATING
             % OF FUND INVESTMENTS
             AS OF             AS OF
            2/28/99           8/31/98
AAA          100%              100%

Ratings provided by Standard & Poor's.  See Credit Rating  Guidelines on page 28
for more information.


                                                 www.americancentury.com      17


Cal. Insured Tax-Free--Schedule of Investments
- --------------------------------------------------------------------------------

FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

MUNICIPAL SECURITIES--95.2%
             $  1,000,000  Banning COP, (Wastewater
                              System Refunding &
                              Improvement), 8.00%, 1/1/19
                              (AMBAC)                               $  1,322,100
                  900,000  Brea Redevelopment Agency Tax
                              Allocation, (Project AB),
                              6.125%, 8/1/13 (MBIA)                      991,440
                5,565,000  California Educational Facilities
                              Auth. Rev., (California Institute
                              of Technology), 4.25%,
                              10/1/28                                  4,904,042
                2,450,000  California Educational Facilities
                              Auth. Rev., Series 1997 M,
                              (Stanford University), 5.25%,
                              12/1/26                                  2,490,033
                2,500,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1989 A, (Sutter Hospital),
                              6.70%, 3/1/99 (AMBAC)(1)                 2,526,325
                1,250,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1991 A, (Adventist Health),
                              7.00%, 3/1/13 (MBIA)                     1,351,925
                1,505,000  California Public Capital
                              Improvements Financing Auth.
                              Rev., (Pooled Project 1988 B),
                              8.10%, 3/1/18 (BIGI)                     1,533,700
                2,000,000  California State GO, 4.50%,
                              12/1/24 (FGIC)                           1,857,260
                3,500,000  California State GO, 4.25%,
                              10/1/26 (MBIA)                           3,111,605
                4,000,000  California State Public Works
                              Board Lease Rev. COP, Series
                              1993 A, (Department of
                              Corrections State Prisons),
                              5.00%, 12/1/19 (AMBAC)                   4,069,800
                6,000,000  California State Public Works
                              Board Lease Rev. COP, Series
                              1993 D, (Department of
                              Corrections State Prisons),
                              5.25%, 6/1/15 (FSA)                      6,368,340
                4,135,000  California State Universities and
                              Colleges Rev., 5.75%, 11/1/15
                              (FGIC)                                   4,485,276
                3,925,000  California Statewide Communities
                              Development Auth. Rev. COP,
                              (Gemological Institute), 6.75%,
                              5/1/10 (Connie Lee)                      4,745,914
                7,000,000  California Statewide Community
                              Development Auth. Rev., Series
                              1998 A, (Sherman Oaks),
                              5.00%, 8/1/22 (AMBAC,
                              California Mortgage Insurance)           7,062,510
                1,520,000  Castaic Lake Water Agency COP,
                              Series 1994 A, (Water System
                              Improvement), 7.00%, 8/1/12
                              (MBIA)                                   1,893,722

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

             $  1,000,000  Contra Costa County COP, 7.80%,
                              6/1/99, Prerefunded at 102%
                              of Par (BIGI)(1)                      $  1,032,860
                1,200,000  Contra Costa Water District Rev.,
                              Series 1992 E, 6.25%,
                              10/1/12 (AMBAC)                          1,421,904
                1,000,000  East Valley Water District COP,
                              (Treatment Plant), 6.60%,
                              12/1/14 (AMBAC)                          1,110,330
                2,000,000  Escondido Joint Powers Financing
                              Auth. Rev. COP, 6.125%,
                              9/1/11 (AMBAC)                           2,159,420
                2,620,000  Escondido Unified School District
                              COP, 4.75%, 7/1/19 (MBIA)                2,570,587
                1,695,000  Escondido Unified School District
                              COP, 4.75%, 7/1/23 (MBIA)                1,647,710
                2,000,000  Fontana Unified School District 
                              GO, Series 1997 D, 5.85%,
                              5/1/22 (FGIC)(2)                         2,095,120
                3,100,000  Foothill-De Anza Community
                              College District COP, 6.25%,
                              9/1/13 (Connie Lee)                      3,435,234
                1,725,000  Fresno Sewer Rev., Series
                              1993 A-1, 6.25%, 9/1/14
                              (AMBAC)                                  2,035,000
                1,240,000  Fresno Sewer Rev., Series
                              1993 A-1, 4.75%, 9/1/21
                              (AMBAC)                                  1,215,126
                5,000,000  Glendale Hospital Rev., Series
                              1991 A, (Adventist Hospital),
                              6.75%, 3/1/13 (MBIA)                     5,378,600
                4,830,000  Glendale Unified School District
                              COP, Series 1994 A, 6.50%,
                              3/1/12 (AMBAC)                           5,446,936
                1,340,000  Kern High School District GO,
                              Series 1993 C, 6.25%, 8/1/13
                              (MBIA)                                   1,582,955
                3,630,000  Kern High School District GO,
                              Series 1993 D, 7.00%, 8/1/17
                              (MBIA)                                   4,191,198
                2,000,000  La Quinta Financing Auth. Lease
                              Rev. COP, (La Quinta City Hall),
                              5.55%, 10/1/18 (MBIA)                    2,179,700
                  790,000  Lake Elsinore Public Financing
                              Auth. Tax Allocation, Series
                              1992 C, (Redevelopment),
                              6.625%, 2/1/17 (FGIC)                      828,031
                1,500,000  Lakewood Redevelopment Agency
                              Tax Allocation, Series 1992 A,
                              (Project No. 1), 6.50%, 9/1/17
                              (FSA)                                    1,654,395
                  640,000  Los Angeles Community
                              Redevelopment Agency Housing
                              Rev., Series 1994 C, 7.00%,
                              1/1/14 (AMBAC)                             698,138
                3,500,000  Los Angeles Community
                              Redevelopment Agency Tax
                              Allocation, Series 1993 H,
                              (Bunker Hill), 6.50%, 12/1/14
                              (FSA)(3)                                 3,947,650

                                               See Notes to Financial Statements


18      1-800-345-2021


Cal. Insured Tax-Free--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

             $  4,000,000  Los Angeles Community
                              Redevelopment Agency Tax
                              Allocation, Series 1993 H,
                              (Bunker Hill), 6.50%, 12/1/15
                              (FSA)                                 $  4,500,440
                1,000,000  Los Angeles County Transportation
                              Commission Sales Tax Rev.,
                              6.50%, 7/1/13 (AMBAC)                    1,082,460
                2,000,000  Los Angeles Unified School
                              District GO, Series 1997 A,
                              5.00%, 7/1/21 (FGIC)                     1,990,540
                1,100,000  Los Angeles Wastewater System 
                              Rev., Series 1991 C,
                              7.00%, 6/1/99, Prerefunded at 102%
                              of Par (AMBAC)(1)                        1,133,979
                1,915,000  Midpeninsula Regional Open
                              Space District Financing Auth.
                              Rev., 5.90%, 9/1/14 (AMBAC)              2,099,223
                5,000,000  Modesto, Stockton, Redding
                              Public Power Agency Rev.,
                              Series 1989 D, (San Juan),
                              6.75%, 7/1/20 (MBIA)                     6,087,900
                1,200,000  National City Joint Powers Auth.
                              Lease Rev. COP, (Police
                              Facilities), 6.75%, 10/1/01,
                              Prerefunded at 102% of Par
                              (AMBAC)(1)                               1,326,936
                2,810,000  Oakland Redevelopment Agency
                              Tax Allocation, (Central District
                              Redevelopment Tax), 5.50%,
                              2/1/14 (AMBAC)                           3,072,904
                2,700,000  Orange County Financing Auth.
                              Tax Allocation, Series 1992 A,
                              6.25%, 9/1/14 (MBIA)                     2,918,160
                1,950,000  Ramona Municipal Water District
                              COP, 7.20%, 10/1/10
                              (AMBAC)                                  2,101,281
                1,100,000  Redlands Unified School District
                              COP, 6.00%, 9/1/12 (FSA)                 1,160,632
               17,500,000  Sacramento Municipal Utility
                              District Electric Rev., Series
                              1997 K, 5.25%, 7/1/24
                              (AMBAC)                                 18,317,250
                2,210,000  Sacramento Redevelopment
                              Agency Tax Allocation, Series
                              1990 A, 6.50%, 11/1/00,
                              Prerefunded at 102% of Par
                              (MBIA)(1)                                2,376,170
                  295,000  Sacramento Redevelopment
                              Agency Tax Allocation, Series
                              1990 A, 6.50%, 11/1/13,
                              Prerefunded at 102% of Par
                              (MBIA)(1)                                  314,715
                3,000,000  Saddleback Community College
                              District COP, 7.00%, 8/1/19
                              (BIGI)                                   3,107,010
                1,345,000  San Diego Community College
                              District Lease Rev. COP,
                              6.125%, 12/1/06, Prerefunded
                              at 102% of Par (MBIA)(1)                 1,569,077

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

             $  7,000,000  San Diego County COP, 5.625%,
                              9/1/12 (AMBAC)                        $  7,767,550
                6,035,000  San Diego County Water Auth.
                              Water Rev. COP, Series
                              1998 A, 4.50%, 5/1/24 (FGIC)             5,601,084
                3,250,000  San Francisco Bay Area Rapid
                              Transportation District Sales Tax
                              Rev., 6.75%, 7/1/00,
                              Prerefunded at 102% of Par
                              (AMBAC)(1)                               3,470,448
                3,500,000  San Francisco City and County
                              Airport Commission International
                              Airport Rev., Issue 20, 4.50%,
                              5/1/26 (MBIA)                            3,243,660
                6,000,000  San Francisco City and County
                              Airport Commission International
                              Airport Rev., Issue 21, 4.50%,
                              5/1/23 (MBIA)                            5,585,400
                8,330,000  San Francisco City and County
                              Airport Commission
                              International Airport Rev.,
                              Issue 2, 6.75%, 5/1/20 (MBIA)            9,335,848
                1,670,000  San Francisco City and County
                              Airport Commission
                              International Airport Rev.,
                              Issue 2, 6.75%, 5/1/03,
                              Prerefunded at 102% of Par
                              (MBIA)(1)                                1,906,405
                3,500,000  San Mateo County Joint Powers
                              Auth. Lease Rev., (Capital
                              Projects Program), 5.00%,
                              7/1/21 (MBIA)                            3,549,385
                3,535,000  San Mateo County Joint Powers
                              Auth. Lease Rev., (Capital
                              Projects Program), 6.50%,
                              7/1/15 (MBIA)                            4,252,782
                1,000,000  San Mateo County Transportation
                              District Sales Tax Rev., Series
                              1993 A, 5.25%, 6/1/18
                              (MBIA)                                   1,051,560
                1,000,000  San Ysidro School District GO,
                              6.125%, 8/1/21 (AMBAC)                   1,136,140
                3,500,000  Santa Ana Financing Auth. Rev.,
                              Series 1999 B, (South Harbor
                              Boulevard), 5.125%, 9/1/19
                              (MBIA)(4)                                3,467,450
                2,000,000  Santa Clara Electric Rev., 
                              Series 1998 A, 5.00%, 7/1/27
                              (AMBAC)                                  1,989,360
                2,000,000  Santa Margarita-Dana Point Auth.
                              Rev., Series 1994 B,
                              (Improvement Districts 3, 3A,
                              4, 4A), 7.25%, 8/1/14 (MBIA)             2,573,680
                1,265,000  Sierra Valley Hospital District GO,
                              5.50%, 8/1/23 (MBIA)                     1,331,349
                2,500,000  South Coast Air Quality
                              Management District Building
                              GO, (Installment Sale
                              Headquarters), 6.00%,
                              8/1/11 (AMBAC)                           2,894,075

See Notes to Financial Statements


                                                 www.americancentury.com      19


Cal. Insured Tax-Free--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

             $  2,500,000  Ukiah Electric Rev., 6.25%,
                              6/1/18 (MBIA)                         $  2,939,925
                1,445,000  Walnut Valley Unified School
                              District GO, Series 1992 B,
                              6.00%, 8/1/10 (AMBAC)                    1,678,440
                2,080,000  Watsonville Wastewater Rev.,
                              5.00%, 5/15/16 (MBIA)                    2,100,509
                4,525,000  Woodland COP, (Wastewater
                              System Reference), 5.75%,
                              3/1/12 (AMBAC)                           5,079,901
                                                                   -------------
TOTAL MUNICIPAL SECURITIES                                           217,458,514
                                                                   -------------
   (Cost $203,044,118)

MUNICIPAL DERIVATIVES(5)--2.8%
                2,000,000  East Bay Municipal Utility District
                              Wastewater Treatment System
                              Rev., Yield Curve Notes, Inverse
                              Floater, 6.82%, 6/1/13
                              (AMBAC)                                  2,195,000
                1,000,000  San Diego County Water Auth.
                              Rev. COP, (Reg Rites), Yield
                              Curve Notes, Inverse Floater,
                              7.25%, 5/1/09 (FGIC)                     1,236,250

Principal Amount                                                         Value
- --------------------------------------------------------------------------------

             $  2,750,000  Southern California Public Power
                              Auth. Rev., Yield Curve Notes,
                              Inverse Floater, 6.62%, 7/1/17
                              (FGIC)                                $  3,080,000
                                                                   -------------
TOTAL MUNICIPAL DERIVATIVES                                            6,511,250
                                                                   -------------
   (Cost $5,838,430)

SHORT-TERM MUNICIPAL SECURITIES--2.0%
                2,000,000  California Health Facilities
                              Financing Auth. Rev., Series
                              1996 B, VRDN, 3.10%, 3/1/99              2,000,000
                1,500,000  California State Economic
                              Development Financing Auth.
                              Rev., Series 1998 C, VRDN,
                              3.50%, 3/1/99                            1,500,000
                1,000,000  California Statewide Community
                              Development Auth. Rev.,
                              Floating Rate Trust Receipts,
                              2.95%, 3/3/99 (Acquired
                              2/26/99, Cost $1,000,000)(6)(7)          1,000,000
                                                                   -------------
TOTAL SHORT-TERM MUNICIPAL SECURITIES                                  4,500,000
                                                                   -------------
   (Cost $4,500,000)

TOTAL INVESTMENT SECURITIES--100.0%                                 $228,469,764
                                                                   =============
   (Cost $213,382,548)

NOTES TO SCHEDULE OF INVESTMENTS

AMBAC = AMBAC Assurance Corporation

BIGI = Bond Investor's Guaranty Inc.

COP = Certificates of Participation

FGIC = Financial Guaranty Insurance Co.

FSA = Financial Security Assurance Inc.

GO = General Obligation

MBIA = MBIA Insurance Corp.

VRDN = Variable Rate Demand Note.  Interest  reset date is indicated and used in
calculating the weighted  average  portfolio  maturity.  Rate shown is effective
February 28, 1999.

(1)  Escrowed  to  maturity  in U.S.  Government  securities  or state and local
     government securities.
(2)  Step-coupon  security.  Yield to maturity at purchase is  indicated.  These
     securities become interest bearing at a predetermined  rate and future date
     and are purchased at a substantial discount from their value at maturity.
(3)  Security,  or a portion thereof,  has been segregated at the custodian bank
     for a when-issued security.
(4)  When-issued security.
(5)  Inverse floaters have interest rates that move inversely to market interest
     rates.  Inverse  floaters  typically have  durations  longer than long-term
     bonds, which may cause their value to be more volatile than long-term bonds
     when interest rates change.
(6)  Security was purchased  under Rule 144A of the Securities Act of 1933 or is
     a private  placement,  and unless registered under the Act or exempted from
     registration,  may only be sold to qualified institutional  investors.  The
     aggregate  value of these  securities at February 28, 1999, was $1,000,000,
     which represented 0.4% of net assets.
(7)  Interest  reset date is  indicated  and used in  calculating  the  weighted
     average portfolio maturity. Rate shown is effective February 28, 1999.

- --------------------------------------------------------------------------------
UNDERSTANDING  THE  SCHEDULE  OF  INVESTMENTS--This  schedule  tells  you  which
investments your fund owned on the last day of the reporting period.

The schedule includes:

* a list of each investment

* the principal amount of each investment

* the market value of each investment

                                               See Notes to Financial Statements


20      1-800-345-2021


Statements of Assets and Liabilities
- --------------------------------------------------------------------------------

FEBRUARY 28, 1999 (UNAUDITED)

                                                      HIGH-YIELD         INSURED
                                                       MUNICIPAL        TAX-FREE
ASSETS
Investment securities, at value
  (identified cost of $328,205,622 and
  $213,382,548 respectively) (Note 3) ..........    $341,511,271    $228,469,764
Investment in affiliated money
  market fund (Note 2) .........................           8,639           8,759
Cash ...........................................       1,075,515         471,398
Interest receivable ............................       6,125,299       3,393,379
                                                    ------------    ------------
                                                     348,720,724     232,343,300
                                                    ------------    ------------

LIABILITIES
Payable for investments purchased ..............       5,618,681       3,349,395
Payable for capital shares redeemed ............         494,460         236,222
Accrued management fees (Note 2) ...............         138,599          88,504
Dividends payable ..............................          94,942          62,429
Payable for trustees' fees
  and expenses .................................             779             527
                                                    ------------    ------------
                                                       6,347,461       3,737,077
                                                    ------------    ------------
Net Assets .....................................    $342,373,263    $228,606,223
                                                    ============    ============

CAPITAL SHARES
Outstanding (unlimited number
  of shares authorized) ........................      34,893,379      21,714,314
                                                    ============    ============
Net Asset Value Per Share ......................    $       9.81    $      10.53
                                                    ============    ============

NET ASSETS CONSIST OF:
Capital paid in ................................    $329,066,752    $213,200,784
Accumulated undistributed net
  realized gain on investment
  transactions .................................             862         318,223
Net unrealized appreciation
  on investments (Note 3) ......................      13,305,649      15,087,216
                                                    ------------    ------------
                                                    $342,373,263    $228,606,223
                                                    ============    ============

- --------------------------------------------------------------------------------
UNDERSTANDING THE STATEMENTS OF ASSETS AND  LIABILITIES--This  statement details
what the fund owns (assets),  what it owes (liabilities),  and its net assets as
of the last day of the period.  If you subtract  what the fund owes from what it
owns, you get the fund's net assets.  The net assets divided by the total number
of shares  outstanding  gives you the price of an individual  share,  or the net
asset value per share.

NET ASSETS are also broken down by capital (money invested by shareholders); net
gains earned on investments  but not yet paid to  shareholders  or net losses on
investments (known as realized gains or losses); and finally, gains or losses on
securities  still  owned  by the  fund  (known  as  unrealized  appreciation  or
depreciation).  This  breakdown  tells  you the  value  of net  assets  that are
performance-related,  such as investment  gains or losses,  and the value of net
assets that are not related to performance,  such as shareholder investments and
redemptions.

See Notes to Financial Statements


                                                 www.americancentury.com      21


Statements of Operations
- --------------------------------------------------------------------------------

FOR THE SIX MONTHS ENDED FEBRUARY 28, 1999 (UNAUDITED)

                                                    HIGH-YIELD       INSURED
                                                    MUNICIPAL       TAX-FREE
INVESTMENT INCOME
Income:
Interest ...................................      $ 8,763,384       $ 5,748,750
                                                  -----------       -----------
Expenses (Note 2):
Management fees ............................          841,595           554,669
Trustees' fees and expenses ................            5,900             4,369
                                                  -----------       -----------
                                                      847,495           559,038
                                                  -----------       -----------
Net investment income ......................        7,915,889         5,189,712
                                                  -----------       -----------

REALIZED AND UNREALIZED GAIN
(LOSS) ON INVESTMENTS (NOTE 3)
Net realized gain on investments ...........        1,447,884           806,053
Change in net unrealized
  appreciation on investments ..............       (1,890,452)       (1,268,735)
                                                  -----------       -----------
Net realized and unrealized
  loss on investments ......................         (442,568)         (462,682)
                                                  -----------       -----------
Net Increase in Net Assets
  Resulting from Operations ................      $ 7,473,321       $ 4,727,030
                                                  ===========       ===========

- --------------------------------------------------------------------------------
UNDERSTANDING THE STATEMENTS OF OPERATIONS--This  statement breaks down how each
fund's  net  assets  changed  during  the  period  as a  result  of  the  fund's
operations.  It tells you how much money the fund made or lost after taking into
account income,  fees and expenses,  and investment gains or losses. It does not
include shareholder transactions and distributions.

Fund OPERATIONS include:

* income earned from investments

* management fees and other expenses

* gains or losses from selling investments (known as realized gains or losses)

* gains or losses on current fund holdings (known as unrealized appreciation or
  depreciation)

                                               See Notes to Financial Statements


22      1-800-345-2021


<TABLE>
<CAPTION>
Statements of Changes in Net Assets
- --------------------------------------------------------------------------------

SIX MONTHS ENDED FEBRUARY 28, 1999 (UNAUDITED) AND YEAR ENDED AUGUST 31, 1998

                                             HIGH-YIELD MUNICIPAL           INSURED TAX-FREE
Increase in Net Assets                      1999              1998       1999              1998

OPERATIONS
<S>                                    <C>             <C>             <C>             <C>          
Net investment income ...............  $   7,915,889   $  12,677,129   $   5,189,712   $   9,928,056
Net realized gain on investments ....      1,447,884       2,562,512         806,053       1,583,804
Change in net unrealized
  appreciation on investments .......     (1,890,452)      6,311,903      (1,268,735)      5,870,522
                                       -------------   -------------   -------------   -------------
Net increase in net assets
  resulting from operations .........      7,473,321      21,551,544       4,727,030      17,382,382
                                       -------------   -------------   -------------   -------------

DISTRIBUTIONS TO SHAREHOLDERS
From net investment income ..........     (7,934,700)    (12,677,129)     (5,189,712)     (9,928,056)
From net realized gains on
  investment transactions ...........     (3,429,593)     (2,545,652)     (1,169,516)     (2,921,262)
                                       -------------   -------------   -------------   -------------
Decrease in net assets
  from distributions ................    (11,364,293)    (15,222,781)     (6,359,228)    (12,849,318)
                                       -------------   -------------   -------------   -------------

CAPITAL SHARE  TRANSACTIONS
Proceeds from shares sold ...........     92,105,967     181,804,274      42,920,146      82,053,478
Proceeds from reinvestment
  of distributions ..................      8,089,596      11,152,218       4,499,696       8,954,545
Payments for shares redeemed ........    (57,772,868)    (88,275,006)    (32,690,638)    (69,176,578)
                                       -------------   -------------   -------------   -------------
Net increase in net assets from
  capital share transactions ........     42,422,695     104,681,486      14,729,204      21,831,445
                                       -------------   -------------   -------------   -------------
Net increase in net assets ..........     38,531,723     111,010,249      13,097,006      26,364,509

NET ASSETS
Beginning of period .................    303,841,540     192,831,291     215,509,217     189,144,708
                                       -------------   -------------   -------------   -------------
End of period .......................  $ 342,373,263   $ 303,841,540   $ 228,606,223   $ 215,509,217
                                       =============   =============   =============   =============
Undistributed net investment
  income ............................           --     $      18,811            --              --
                                       =============   =============   =============   =============

TRANSACTIONS IN
SHARES OF THE FUNDS
Sold ................................      9,305,384      18,553,052       4,045,979       7,856,824
Issued in reinvestment
  of distributions ..................        818,052       1,137,993         424,129         855,798
Redeemed ............................     (5,824,261)     (9,015,907)     (3,081,616)     (6,627,802)
                                       -------------   -------------   -------------   -------------
Net increase ........................      4,299,175      10,675,138       1,388,492       2,084,820
                                       =============   =============   =============   =============
</TABLE>

- --------------------------------------------------------------------------------
UNDERSTANDING THE STATEMENTS OF CHANGES IN NET ASSETS--These statements show how
each fund's net assets changed over the past two reporting  periods.  It details
how much a fund grew or shrank as a result of:

* operations--a summary of the Statement of Operations from the previous page
  for the most recent period

* distributions--income and gains distributed to shareholders

* share transactions--shareholders' purchases, reinvestments, and redemptions

Net  assets  at the  beginning  of  the  period  plus  the  sum  of  operations,
distributions  to  shareholders  and capital  share  transactions  result in net
assets at the end of the period.

See Notes to Financial Statements


                                                 www.americancentury.com      23


Notes to Financial Statements
- --------------------------------------------------------------------------------

FEBRUARY 28, 1999 (UNAUDITED)

1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     ORGANIZATION -- American  Century  California  Tax-Free and Municipal Funds
(the  trust)  is  registered  under  the  Investment  Company  Act of 1940 as an
open-end management  investment company.  California  High-Yield  Municipal Fund
(High-Yield) and California  Insured Tax-Free Fund (Insured) (the funds) are two
of the seven funds issued by the trust. The funds are diversified under the 1940
Act.  The funds seek income that is exempt from  federal and  California  income
taxes.  High-Yield  seeks to  provide  as high a level of  current  income as is
consistent with its investment policies,  which permit investment in lower-rated
and unrated  municipal  securities.  Insured seeks to provide as high a level of
current income as is consistent with safety of principal  through  investment in
insured California municipal securities. The funds concentrate their investments
in a single state and therefore may have more exposure to credit risk related to
the state of California than a fund with a broader geographical diversification.
The following  significant  accounting policies are in accordance with generally
accepted  accounting  principles;  these  principles  may  require  the  use  of
estimates by fund management.

     SECURITY VALUATIONS -- Portfolio securities are valued through a commercial
pricing  service or at the mean of the most  recent bid and asked  prices.  When
valuations  are not readily  available,  securities  are valued at fair value as
determined in accordance with procedures adopted by the Board of Trustees.

     SECURITY  TRANSACTIONS -- Security transactions are accounted for as of the
trade date. Net realized gains and losses are determined on the identified  cost
basis, which is also used for federal income tax purposes.

     INVESTMENT  INCOME -- Interest  income is recorded on the accrual basis and
includes accretion of discounts and amortization of premiums.

     INCOME  TAX  STATUS  -- It is the  funds'  policy  to  distribute  all  net
investment  income  and net  realized  gains to  shareholders  and to  otherwise
qualify as a regulated  investment  company under the provisions of the Internal
Revenue  Code.  Accordingly,  no  provision  has been made for  federal or state
income taxes.

     DISTRIBUTIONS TO SHAREHOLDERS -- Distributions  from net investment  income
for the funds are declared daily and distributed monthly. Distributions from net
realized gains for the funds are declared and paid annually.

     The  character of  distributions  made during the year from net  investment
income or net realized gains may differ from their ultimate characterization for
federal income tax purposes.  These differences  reflect the differing character
of certain income items and net capital gains and losses for financial statement
and tax  purposes  and may  result in  reclassification  among  certain  capital
accounts.

     FUTURES  CONTRACTS  -- The funds  may buy and sell  interest  rate  futures
contracts  relating  to debt  securities.  Futures  transactions  may be used to
maintain cash reserves while remaining fully invested, to facilitate trading, to
reduce  transaction costs, or to pursue higher investment returns when a futures
contract is priced more attractively than its underlying  security or index. One
of the risks of entering into futures contracts may include the possibility that
the changes in value of the contract may not correlate with the changes in value
of the underlying  securities.  Upon entering into a futures contract, the funds
are  required  to deposit  either  cash or  securities  in an amount  equal to a
certain percentage of the contract value (initial margin).  Subsequent  payments
(variation  margin)  are made or  received  daily,  in cash,  by the funds.  The
variation  margin is equal to the  daily  change  in the  contract  value and is
recorded as an unrealized  gain or loss. The funds  recognize a realized gain or
loss when the contract is closed or expired.  Net realized and unrealized  gains
or losses  occurring  during  the  holding  period of  futures  contracts  are a
component of realized gain (loss) on  investments  and  unrealized  appreciation
(depreciation)  on  investments,   respectively.  There  were  no  open  futures
contracts at February 28, 1999.

     ADDITIONAL  INFORMATION  -- Funds  Distributor,  Inc.  (FDI) is the trust's
distributor. Certain officers of FDI are also officers of the trust.


24      1-800-345-2021


Notes to Financial Statements
- --------------------------------------------------------------------------------
                                                                    (Continued)
FEBRUARY 28, 1999 (UNAUDITED)

- --------------------------------------------------------------------------------
2. TRANSACTIONS WITH RELATED PARTIES

     The trust has entered into a Management  Agreement  with  American  Century
Investment  Management,  Inc.  (ACIM) that  provides  each fund with  investment
advisory and management  services in exchange for a single,  unified  management
fee.  Expenses  excluded from this  agreement are  brokerage,  taxes,  portfolio
insurance,  interest,  fees and expenses of the Trustees who are not  considered
"interested persons" as defined in the Investment Company Act of 1940 (including
counsel fees) and extraordinary  expenses.  The fee is calculated daily and paid
monthly.  It consists  of an  Investment  Category  Fee based on the average net
assets of the funds in a specific fund's  investment  category and a Complex Fee
based on the average net assets of all the funds managed by ACIM.  The rates for
the  Investment  Category  Fee range  from  0.1925% to  0.3100%  and  0.1625% to
0.2800%, for High-Yield and Insured, respectively. The rates for the Complex Fee
range from 0.2900% to 0.3100%.  For the six months ended  February 28, 1999, the
effective annual  management fee was 0.54% and 0.51% for High-Yield and Insured,
respectively.

     Certain  officers  and  trustees  of the  trust  are also  officers  and/or
directors,  and,  as a  group,  controlling  stockholders  of  American  Century
Companies,  Inc., the parent of the trust's  investment  manager,  ACIM, and the
trust's transfer agent, American Century Services Corporation.

     As of  February  28,  1999,  High-Yield  had  invested  $8,639 in shares of
California  Municipal Money Market Fund (Municipal Money Market) and Insured had
invested $8,759 in shares of Tax-Free Money Market Fund (Tax-Free Money Market).
The terms of such transactions were identical to those with non-related entities
except that, to avoid  duplicative  management fees,  High-Yield and Insured did
not pay ACIM  management fees with respect to assets invested in Municipal Money
Market and Tax-Free Money Market.

- --------------------------------------------------------------------------------
3. INVESTMENT TRANSACTIONS

     Purchases of investment securities,  excluding short-term investments,  for
High-Yield and Insured totaled $108,218,495 and $52,001,474, respectively. Sales
of investment securities,  excluding short-term investments,  for High-Yield and
Insured totaled $74,816,599 and $37,689,016, respectively.

     As of February  28,  1999,  accumulated  net  unrealized  appreciation  for
High-Yield  and Insured was  $13,305,649  and  $15,087,216  respectively,  which
consisted  of  unrealized   appreciation   of   $13,893,210   and   $15,549,990,
respectively, and unrealized depreciation of $587,561 and $462,774 respectively.
The aggregate cost of  investments  for federal income tax purposes was the same
as the cost for financial reporting purposes.

- --------------------------------------------------------------------------------
4. BANK LOANS

     Effective  December 18,  1998,  the funds,  along with certain  other funds
managed by ACIM,  entered  into an  unsecured  $570,000,000  bank line of credit
agreement  with  Chase  Manhattan  Bank.  Borrowings  under the  agreement  bear
interest at the Federal  Funds rate plus 0.40%.  The funds may borrow  money for
temporary or emergency purposes to fund shareholder  redemptions.  The funds did
not borrow from the line during the period  December 18, 1998  through  February
28, 1999.

- --------------------------------------------------------------------------------
5. SUBSEQUENT EVENTS

   The following name changes became effective March 1, 1999:

              ==================================================================
               NEW NAME                  FORMER NAME
              ==================================================================
   FUND:       California High-Yield     American Century - Benham California
               Municipal Fund            High-Yield Municipal Fund

   FUND:       California Insured        American Century - Benham California
               Tax-Free Fund             Insured Tax-Free Fund


                                                 www.americancentury.com      25


<TABLE>
<CAPTION>
Cal. High-Yield Municipal--Financial Highlights
- --------------------------------------------------------------------------------

FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED AUGUST 31 (EXCEPT AS NOTED)

                                    1999(1)      1998       1997       1996       1995       1994
PER-SHARE DATA
Net Asset Value,
<S>                                  <C>         <C>        <C>        <C>        <C>        <C>  
Beginning of Period ...............  $9.93       $9.68      $9.27      $9.11      $9.06      $9.66
                                   ---------   --------   --------   --------   --------   --------
Income From Investment
  Operations
  Net Investment Income ...........  0.25        0.51       0.55       0.56       0.56       0.56
  Net Realized and Unrealized
  Gain (Loss) on Investment
  Transactions .................... (0.01)       0.37       0.41       0.16       0.05      (0.48)
                                   ---------   --------   --------   --------   --------   --------
  Total From Investment
  Operations ......................  0.24        0.88       0.96       0.72       0.61       0.08
                                   ---------   --------   --------   --------   --------   --------
Distributions
  From Net Investment Income ...... (0.25)      (0.51)     (0.55)     (0.56)     (0.56)     (0.56)
  From Net Realized Gains ......... (0.11)      (0.12)       --         --         --       (0.12)
                                   ---------   --------   --------   --------   --------   --------
  Total Distributions ............. (0.36)      (0.63)     (0.55)     (0.56)     (0.56)     (0.68)
                                   ---------   --------   --------   --------   --------   --------
Net Asset Value,
End of Period .....................  $9.81       $9.93      $9.68      $9.27      $9.11      $9.06
                                   =========   ========   ========   ========   ========   ========
  Total Return(2) .................  2.40%       9.35%     10.61%      8.02%      7.09%      0.87%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets .............0.54%(3)      0.54%      0.50%      0.51%      0.51%      0.51%
Ratio of Net Investment Income
to Average Net Assets .............5.03%(3)      5.23%      5.77%      5.99%      6.30%      6.02%
Portfolio Turnover Rate ...........   24%         36%        46%        36%        40%        43%
Net Assets, End of Period
(in thousands) ....................$342,373    $303,842   $192,831   $144,675   $116,166   $116,000
</TABLE>

(1) Six months ended February 28, 1999 (unaudited).

(2) Total  return   assumes   reinvestment   of  dividends   and  capital  gains
    distributions,  if any. Total returns for periods less than one year are not
    annualized.

(3) Annualized.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL  HIGHLIGHTS--This  statement itemizes current period
activity and  statistics and provides  comparison  data for the last five fiscal
years.

On a per-share basis, it includes:

* share price at the beginning of the period

* investment income and capital gains or losses

* income and capital gains distributions paid to shareholders

* share price at the end of the period

It also includes some key statistics for the period:

* total return--the overall percentage return of the fund, assuming reinvestment
  of all distributions

* expense ratio--operating expenses as a percentage of average net assets

* net income ratio--net investment income as a percentage of average net assets

* portfolio turnover--the percentage of the portfolio that was replaced during
  the period

                                               See Notes to Financial Statements


26      1-800-345-2021


<TABLE>
<CAPTION>
Cal. Insured Tax-Free--Financial Highlights
- --------------------------------------------------------------------------------

FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED AUGUST 31 (EXCEPT AS NOTED)

                                    1999(1)       1998        1997        1996        1995        1994
PER-SHARE DATA
Net Asset Value,
<S>                                 <C>          <C>         <C>          <C>         <C>        <C>   
Beginning of Period ..............  $10.60       $10.37      $10.00       $9.89       $9.67      $10.64
                                  ----------   ---------   ---------   ---------   ---------   ---------
Income From Investment
Operations
  Net Investment Income ..........   0.25         0.51        0.53        0.53        0.53        0.53
  Net Realized and Unrealized
  Gain (Loss) on Investment
  Transactions ...................  (0.01)        0.39        0.37        0.11        0.22       (0.69)
                                  ----------   ---------   ---------   ---------   ---------   ---------
  Total From Investment
  Operations .....................   0.24         0.90        0.90        0.64        0.75       (0.16)
                                  ----------   ---------   ---------   ---------   ---------   ---------
Distributions
  From Net Investment Income .....  (0.25)       (0.51)      (0.53)      (0.53)      (0.53)      (0.53)
  From Net Realized Gains ........  (0.06)       (0.16)        --          --          --        (0.21)
  In Excess of Net
  Realized Gains .................    --           --          --          --          --        (0.07)
                                  ----------   ---------   ---------   ---------   ---------   ---------
  Total Distributions ............  (0.31)       (0.67)      (0.53)      (0.53)      (0.53)      (0.81)
                                  ----------   ---------   ---------   ---------   ---------   ---------
Net Asset Value,
End of Period ....................  $10.53       $10.60      $10.37      $10.00       $9.89       $9.67
                                  ==========   =========   =========   =========   =========   =========
  Total Return(2) ................   2.23%        8.96%       9.25%       6.60%       8.09%      (1.68)%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ............ 0.51%(3)       0.51%       0.48%       0.49%       0.50%       0.49%
Ratio of Net Investment Income
to Average Net Assets ............ 4.72%(3)       4.91%       5.23%       5.30%       5.54%       5.20%
Portfolio Turnover Rate ..........    17%          31%         46%         43%         40%         47%
Net Assets, End of Period
(in thousands) ................... $228,606     $215,509    $189,145    $191,811    $178,913    $189,439
</TABLE>

(1) Six months ended February 28, 1999 (unaudited).

(2) Total  return   assumes   reinvestment   of  dividends   and  capital  gains
    distributions,  if any. Total returns for periods less than one year are not
    annualized.

(3) Annualized.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL  HIGHLIGHTS--This  statement itemizes current period
activity and  statistics and provides  comparison  data for the last five fiscal
years.

On a per-share basis, it includes:

* share price at the beginning of the period

* investment income and capital gains or losses

* income and capital gains distributions paid to shareholders

* share price at the end of the period

It also includes some key statistics for the period:

* total return--the overall percentage return of the fund, assuming reinvestment
  of all distributions

* expense ratio--operating expenses as a percentage of average net assets

* net income ratio--net investment income as a percentage of average net assets

* portfolio turnover--the percentage of the portfolio that was replaced during
  the period

See Notes to Financial Statements


                                                 www.americancentury.com      27


Background Information
- --------------------------------------------------------------------------------

INVESTMENT PHILOSOPHY AND POLICIES

     American  Century offers 38 fixed-income  funds,  ranging from money market
portfolios  to long-term  bond funds and including  both taxable and  tax-exempt
funds.  Each is  managed to  provide a "pure  play" on a specific  sector of the
fixed-income market. To ensure adherence to this principle,  the basic structure
of each portfolio is tied to a specific market index.  Fund managers  attempt to
add value by making  modest  portfolio  adjustments  based on their  analysis of
prevailing market conditions. Investment decisions are made by management teams,
which meet regularly to discuss market analysis and investment strategies.

     In addition to these principles, each fund has its own investment policies:

     CALIFORNIA  HIGH-YIELD  MUNICIPAL seeks to provide a high level of interest
income exempt from both federal and  California  state income taxes by investing
in California municipal securities.  The fund typically invests a portion of its
assets in lower-quality and unrated  securities,  which are subject to increased
credit risk, default risk and liquidity risk. The fund is managed to maintain an
average maturity of 10 years or more.

     CALIFORNIA  INSURED  TAX-FREE  seeks to  provide a high  level of  interest
income exempt from both federal and  California  state income taxes by investing
in insured California municipal  securities.  The fund is managed to maintain an
average maturity of 10 years or more. Fund shares are not insured.

COMPARATIVE INDICES

     The following index is used in the report for fund performance comparisons.
It is not an investment product available for purchase.

     THE LEHMAN BROTHERS LONG-TERM MUNICIPAL BOND INDEX is composed of more than
2,800 municipal bonds with maturities  greater than 22 years. The average credit
rating of the  securities in the index is AA2/AA3.  The average  maturity of the
index is approximately 27 years.

LIPPER RANKINGS

     LIPPER INC. is an independent mutual fund ranking service that groups funds
according to their investment objectives. Rankings are based on average annual
returns for each fund in a given category for the periods indicated. Rankings
are not included for periods less than one year.

     The Lipper categories for the California  High-Yield  Municipal and Insured
Tax-Free funds are:

     CALIFORNIA MUNICIPAL DEBT FUNDS (High-Yield  Municipal)--funds  that invest
at  least  65% of  assets  in  securities  that  are  exempt  from  taxation  in
California.

     CALIFORNIA  INSURED  MUNICIPAL  DEBT FUNDS (Insured  Tax-Free)--funds  that
invest at least 65% of assets in  securities  that are exempt  from  taxation in
California  and  insured  as to timely  payment of  interest  and  repayment  of
principal.

[left margin]

INVESTMENT TEAM LEADERS

  PORTFOLIO MANAGERS
     DAVE MACEWEN
     STEVEN PERMUT

  CREDIT RESEARCH MANAGER
     STEVEN PERMUT

CREDIT RATING GUIDELINES

     CREDIT  RATINGS  ARE  ISSUED  BY  INDEPENDENT  RESEARCH  COMPANIES  SUCH AS
STANDARD & POOR'S AND MOODY'S.  THEY ARE BASED ON AN ISSUER'S FINANCIAL STRENGTH
AND ABILITY TO PAY INTEREST AND PRINCIPAL IN A TIMELY MANNER.

     SECURITIES  RATED  AAA,  AA,  A, OR BBB ARE  CONSIDERED  "INVESTMENT-GRADE"
SECURITIES, MEANING THEY ARE RELATIVELY SAFE FROM DEFAULT. CALIFORNIA HIGH-YIELD
INSURED  MAY  INVEST UP TO 50% OF ITS  PORTFOLIO  IN  SECURITIES  THAT ARE BELOW
INVESTMENT GRADE OR NOT RATED. HERE ARE THE MOST COMMON CREDIT RATINGS AND THEIR
DEFINITIONS:

*    AAA--EXTREMELY STRONG ABILITY TO MEET FINANCIAL OBLIGATIONS.

*    AA--VERY STRONG ABILITY TO MEET FINANCIAL OBLIGATIONS.

*    A--STRONG ABILITY TO MEET FINANCIAL OBLIGATIONS.

*    BBB--GOOD ABILITY TO MEET FINANCIAL OBLIGATIONS.

*    BB--LESS VULNERABLE TO DEFAULT THAN OTHER LOWER-QUALITY ISSUES BUT DO NOT
     QUITE MEET INVESTMENT-GRADE STANDARDS.

     IT'S IMPORTANT TO NOTE THAT CREDIT RATINGS ARE  SUBJECTIVE,  REFLECTING THE
OPINIONS OF THE RATING AGENCIES; THEY ARE NOT ABSOLUTE STANDARDS OF QUALITY.


28      1-800-345-2021


Glossary
- --------------------------------------------------------------------------------

RETURNS

* TOTAL  RETURN  figures  show the overall  percentage  change in the value of a
hypothetical  investment  in  the  fund  and  assume  that  all  of  the  fund's
distributions are reinvested.

* AVERAGE ANNUAL RETURNS  illustrate the annually  compounded returns that would
have produced the fund's cumulative total returns if the fund's  performance had
been  constant  over the  entire  period.  Average  annual  returns  smooth  out
variations  in a fund's  return;  they are not the same as  fiscal  year-by-year
results.  For  fiscal  year-by-year  returns,  please  refer  to the  "Financial
Highlights" on pages 26-27.

YIELDS

* 30-DAY SEC YIELD  represents net  investment  income earned by the fund over a
30-day period,  expressed as an annual percentage rate based on the fund's share
price at the end of the 30-day  period.  The SEC yield  should be regarded as an
estimate  of the  fund's  rate of  investment  income,  and it may not equal the
fund's  actual  income  distribution  rate,  the income paid to a  shareholder's
account, or the income reported in the fund's financial statements.

* 30-DAY  TAX-EQUIVALENT  YIELDS show the taxable  yields  that  investors  in a
combined  California  and federal  income tax bracket  would have to earn before
taxes to equal the fund's tax-free 30-day SEC yield.

INVESTMENT TERMS

* BASIS POINT--a basis point equals one  one-hundredth of a percentage point (or
0.01%). Therefore, 100 basis points equal one percentage point (or 1%).

* COUPON--the stated interest rate of a security.

* YIELD CURVE--a graphic representation of the relationship between maturity and
yield  for  fixed-income   securities.   Yield  curve  graphs  plot  lengthening
maturities along the horizontal axis and rising yields along the vertical axis.

STATISTICAL TERMINOLOGY

* NUMBER OF SECURITIES--the  number of different  securities held by a fund on a
given date.

*  WEIGHTED  AVERAGE   MATURITY   (WAM)--a  measure  of  the  sensitivity  of  a
fixed-income  portfolio to interest rate changes. WAM indicates the average time
until the securities in the portfolio mature, weighted by dollar amount.

* AVERAGE  DURATION--  another  measure  of the  sensitivity  of a  fixed-income
portfolio to interest rate changes.  Duration is a time-weighted  average of the
interest and principal payments of the securities in a portfolio.

* EXPENSE RATIO--the  operating expenses of the fund,  expressed as a percentage
of average net assets.  Shareholders pay an annual fee to the investment manager
for  investment  advisory  and  management  services.  The expenses and fees are
deducted from fund income, not from each shareholder account. (See Note 2 in the
Notes to Financial Statements.)

TYPES OF MUNICIPAL SECURITIES

* COPS  (CERTIFICATES OF  PARTICIPATION)/  LEASES--securities  issued to finance
public  property  improvements  (such as city  halls and  police  stations)  and
equipment  purchases.  Certificates of  participation  represent  long-term debt
obligations,  but leases have a higher risk profile  because they require annual
appropriation.

* GO (GENERAL  OBLIGATION)  BONDS--securities  backed by the taxing power of the
issuer.


                                                 www.americancentury.com      29


Glossary
- --------------------------------------------------------------------------------
                                                                    (Continued)

*  LAND-SECURED  BONDS--securities  such as Mello-Roos  bonds and 1915 Act bonds
that are issued to finance real estate development projects.

*  PREREFUNDED/ETM  BONDS--securities  refinanced or escrowed to maturity by the
issuer because of their premium  coupons  (higher-than-market  interest  rates).
These  bonds  tend to have  higher  credit  ratings  because  they are backed by
Treasury securities.

*  REVENUE  BONDS--securities  backed by  revenues  from  sales  taxes or from a
specific project, system, or facility (such as a hospital,  electric utility, or
water system).

FUND CLASSIFICATIONS

INVESTMENT OBJECTIVE

The investment  objective may be based on the fund's  objective as stated in its
prospectus or fund profile,  or the fund's  categorization by independent rating
organizations based on its management style.

* CAPITAL  PRESERVATION--Offers  taxable and  tax-free  money  market  funds for
relative  stability of  principal  and  liquidity,  allowing  maximum  portfolio
diversification.

* INCOME--Offers  funds that can provide current income and competitive  yields,
as well as a strong and stable  foundation and generally lower volatility levels
than stock funds.

*  GROWTH  &  INCOME--Offers  funds  that  emphasize  both  growth  and  income,
diversification,  varying  capitalization sizes, and different investment styles
and strategies.

*  GROWTH--Offers  funds  with a focus on  capital  appreciation  and  long-term
growth,  generally providing high return potential with corresponding high price
fluctuation risk.

RISK

The classification of funds by risk category is based on quantitative historical
measures as well as qualitative prospective measures. It is not intended to be a
precise  indicator  of future risk or return  levels.  The degree of risk within
each category can vary  significantly,  and some fund returns have  historically
been higher than more aggressive  funds or lower than more  conservative  funds.
Please be aware that the fund's category may change over time. Therefore,  it is
important  that you read a fund's  prospectus or fund profile  carefully  before
investing to ensure its  objectives,  policies and risk potential are consistent
with your needs.

* CONSERVATIVE--these funds generally provide lower return potential with either
low or minimal price fluctuation risk.

* MODERATE--  these funds  generally  provide  moderate  return  potential  with
moderate price fluctuation risk.

*  AGGRESSIVE--  these  funds  generally  provide  high  return  potential  with
corresponding high price fluctuation risk.


30      1-800-345-2021


Notes
- --------------------------------------------------------------------------------


                                                 www.americancentury.com      31


Notes
- --------------------------------------------------------------------------------


32      1-800-345-2021


[inside back cover]

===============================================================================
INVESTMENT OBJECTIVE - CAPITAL PRESERVATION
===============================================================================

                  RISK LEVEL - CONSERVATIVE

TAXABLE MONEY MARKETS           TAX-FREE MONEY MARKETS

Premium  Capital Reserve        FL Municipal Money Market
Prime Money Market              CA Municipal Money Market
Premium Government Reserve      CA Tax-Free Money Market
Government Agency               Tax-Free Money Market
   Money Market
Capital Preservation

===============================================================================
INVESTMENT OBJECTIVE - INCOME
===============================================================================

                   RISK LEVEL - AGGRESSIVE

TAXABLE BONDS                   TAX-FREE BONDS

Target 2025*                    CA High-Yield Municipal
Target 2020*                    High-Yield Municipal
Target 2015*
Target 2010*
High-Yield
International Bond

                    RISK LEVEL - MODERATE

TAXABLE BONDS                   TAX-FREE BONDS

Long-Term Treasury              CA Long-Term Tax-Free
Target 2005*                    Long-Term Tax-Free
Bond                            CA Insured Tax-Free
Premium Bond

                   RISK LEVEL - CONSERVATIVE

TAXABLE BONDS                   TAX-FREE BONDS

Intermediate-Term Bond          CA Intermediate-Term Tax-Free
Intermediate-Term Treasury      AZ Intermediate-Term Municipal
GNMA                            FL Intermediate-Term Municipal
Inflation-Adjusted Treasury     Intermediate-Term  Tax-Free
Limited-Term Bond               CA Limited-Term  Tax-Free
Target 2000*                    Limited-Term Tax-Free
Short-Term Government
Short-Term Treasury

===============================================================================
INVESTMENT OBJECTIVE - GROWTH AND INCOME
===============================================================================

                     RISK LEVEL - AGGRESSIVE

DOMESTIC EQUITY

Small Cap Quantitative
Small Cap Value

                      RISK LEVEL - MODERATE

ASSET ALLOCATION/BALANCED       DOMESTIC EQUITY        SPECIALTY

Strategic Allocation --         Equity Growth          Utilities
   Aggressive                   Equity Index           Real Estate
Balanced                        Tax-Managed Value
Strategic Allocation --         Income & Growth
   Moderate                     Value
Strategic Allocation --         Equity Income
   Conservative

===============================================================================
INVESTMENT OBJECTIVE - GROWTH
===============================================================================

                      RISK LEVEL - AGGRESSIVE

DOMESTIC EQUITY                 SPECIALTY              INTERNATIONAL

New Opportunities               Global Gold            Emerging Markets
Giftrust(reg.tm)                                       International Discovery
Vista                                                  International Growth
Heritage                                               Global Growth
Growth
Ultra
Select

                       RISK LEVEL - MODERATE

SPECIALTY

Global Natural Resources


The investment  objective may be based on the fund's  objective as stated in its
prospectus or fund profile,  or the fund's  categorization by independent rating
organizations based on its management style.

The classification of funds by risk category is based on quantitative historical
measures as well as qualitative prospective measures. It is not intended to be a
precise  indicator  of future risk or return  levels.  The degree of risk within
each category can vary  significantly,  and some fund returns have  historically
been higher than more aggressive  funds or lower than more  conservative  funds.
Please be aware that a fund's  category may change over time.  Therefore,  it is
important  that you read a fund's  prospectus or fund profile  carefully  before
investing to ensure its  objectives,  policies and risk potential are consistent
with your needs.

For a definition of fund categories, see the Glossary.

*  While listed within the Income investment objective,  the Target funds do not
   pay current dividend income.  Income dividends are distributed once a year in
   December. The Target funds are listed in all three risk categories due to the
   dramatic  price  volatility  investors may  experience  during certain market
   conditions.  If held  to  their  target  dates,  however,  they  can  offer a
   conservative, dependable way to invest for a specific time horizon.

Please call for a prospectus  or profile on any  American  Century  fund.  These
documents contain important information including charges and expenses,  and you
should read them carefully before you invest or send money.


[back cover]

[american century logo(reg.sm)]
American
Century

P.O. BOX 419200
KANSAS CITY, MISSOURI 64141-6200

WWW.AMERICANCENTURY.COM

INVESTOR RELATIONS
1-800-345-2021 OR 816-531-5575

AUTOMATED INFORMATION LINE
1-800-345-8765

FAX: 816-340-7962

TELECOMMUNICATIONS DEVICE FOR THE DEAF
1-800-634-4113 OR 816-444-3485

BUSINESS, NOT-FOR-PROFIT, EMPLOYER-SPONSORED RETIREMENT PLANS
1-800-345-3533

AMERICAN CENTURY CALIFORNIA TAX-FREE AND MUNICIPAL FUNDS

INVESTMENT MANAGER
AMERICAN CENTURY INVESTMENT MANAGEMENT, INC.
KANSAS CITY, MISSOURI

THIS REPORT AND THE STATEMENTS IT CONTAINS ARE SUBMITTED FOR THE GENERAL
INFORMATION OF OUR SHAREHOLDERS. THE REPORT IS NOT AUTHORIZED FOR DISTRIBUTION
TO PROSPECTIVE INVESTORS UNLESS PRECEDED OR ACCOMPANIED BY AN EFFECTIVE
PROSPECTUS.



American Century Investments                                      BULK RATE
P.O. Box 419200                                               U.S. POSTAGE PAID
Kansas City, MO 64141-6200                                    AMERICAN CENTURY
www.americancentury.com                                           COMPANIES

9904                                                    Funds Distributor, Inc.
SH-BKT-15979                      (c)1999 American Century Services Corporation


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission