USAA MUTUAL FUND INC
485APOS, 1999-02-26
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As filed with the Securities and Exchange Commission on February 26, 1999.
    

                                                     1933 Act File No. 2-49560
                                                     1940 Act File No. 811-2429

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM N-1A


           REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 _X_
                        Pre-Effective Amendment No. ___
   
                        Post-Effective Amendment No. _50_
    
                                      and

       REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 _X_
   
                                Amendment No. _38_
    
                             USAA MUTUAL FUND, INC.
               -------------------------------------------------
               (Exact Name of Registrant as Specified in Charter)

                9800 Fredericksburg Road, San Antonio, TX 78288
             ------------------------------------------------------
              (Address of Principal Executive Offices) (Zip Code)

       Registrant's Telephone Number, including Area Code (210) 498-0600

                          Michael D. Wagner, Secretary
                             USAA MUTUAL FUND, INC.
                            9800 Fredericksburg Road
                           San Antonio, TX 78288-0227
                    ---------------------------------------
                    (Name and Address of Agent for Service)

Approximate Date of Proposed Public Offering:  As soon as practicable after the
effective date of this Registration Statement.

It is proposed that this filing will become effective under Rule 485

___ immediately  upon filing  pursuant to paragraph  (b)
___ on (date)  pursuant to paragraph (b)
___ 60 days after filing pursuant to paragraph (a)(1)
   
_X_ on May 1, 1999, pursuant to paragraph (a)(1)
    
___ 75 days after filing pursuant to paragraph (a)(2)
___ on (date) pursuant to paragraph (a)(2)

If appropriate, check the following box:
___ This  post-effective  amendment  designates  a  new  effective  date  for a
    previously filed post-effective amendment.

   
                        Exhibit Index on Pages 69 - 73
                                                                  Page 1 of 169
    

<PAGE>
                             USAA MUTUAL FUND, INC.

                             CROSS REFERENCE SHEET

                                     PART A

FORM N-1A ITEM NO.                       SECTION IN PROSPECTUS

1.  Front and Back Cover Pages.......... Same

2.  Risk/Return Summary: Investments,
      Risks, and Performance............ What is the Fund's Investment
                                           Objective and Main Strategy?
                                         Main Risks of Investing in This Fund
                                         Could the Value of Your Investment
                                           in This Fund Fluctuate?

3.  Risk/Return Summary: Fee Table...... Fees and Expenses

4.  Investment Objectives, Principal
      Investment Strategies, and
      Related Risks..................... What is the Fund's Investment
                                           Objective and Main Strategy?
                                         Fund Investments

5.  Management's Discussion
      of Fund Performance............... Not Applicable
   
6.  Management, Organization, and
      Capital Structure................. Fund and Portfolio Management
    
7.  Shareholder Information............. How to Invest
                                         Important Information About Purchases
                                           and Redemptions
                                         Exchanges
                                         Shareholder Information

8.  Distribution Arrangements........... Not Applicable

9.  Financial Highlights Information.... Financial Highlights

<PAGE>
                             USAA MUTUAL FUND, INC.

                             CROSS REFERENCE SHEET

                                     PART B

FORM N-1A ITEM NO.                       SECTION IN STATEMENT OF ADDITIONAL
                                         INFORMATION

10. Cover Page and Table of Contents.... Same

11. Fund History........................ Description of Shares
   
12. Description of the Fund and
      Its Investments and Risks......... Investment Policies
                                         Investment Restrictions
                                         Portfolio Transactions and
                                           Brokerage Commissions

13. Management of the Fund.............. Directors and Officers of the Company
                                         Trustees and Officers of the Portfolio

14. Control Persons and Principal
      Holders of Securities............. Directors and Officers of the Company
                                         Trustees and Officers of the Portfolio

15. Investment Advisory and
      Other Services.................... Directors and Officers of the Company
                                         Investment Adviser
                                         Administrator
                                         General Information

16. Brokerage Allocation and
      Other Practices................... Portfolio Transactions and
                                           Brokerage Commissions
    
17. Capital Stock and
      Other Securities.................. Description of Shares

18. Purchase, Redemption, and
      Pricing of Shares................. Valuation of Securities
                                         Conditions of Purchase and Redemption
                                         Additional Information Regarding
                                           Redemption of Shares
                                         Investment Plans

19. Taxation of the Fund................ Tax Considerations
   
20. Underwriters........................ General Information
    
21. Calculation of Performance Data..... Calculation of Performance Data

22. Financial Statements................ Cover Page

<PAGE>
                                     Part A

   
                               Prospectus for the

                               S&P 500 Index Fund

                               is included herein

                 Not included in this Post-Effective Amendment
                          are the Prospectuses for the

           Aggressive Growth Fund, Growth Fund, Growth & Income Fund,
             Income Stock Fund, Income Fund, Short-Term Bond Fund,
               Money Market Fund, Science & Technology Fund, and
                            First Start Growth Fund
    
<PAGE>
                                  USAA S&P 500
                                   INDEX FUND

                                   Prospectus
   
                                  May 1, 1999

As with other mutual funds,  the  Securities  and Exchange  Commission  has not
approved  or  disapproved  of this Fund's  shares or  determined  whether  this
prospectus  is  accurate  or  complete.  Anyone  who  tells  you  otherwise  is
committing a crime.
    
                               TABLE OF CONTENTS
   
What is the Funds Investment Objective and Main Strategy? ..................  2
    
What is the S&P 500 Index? .................................................  2

   
Main Risks of Investing in This Fund .......................................  2
Is This Fund for You? ......................................................  3
Could the Value of Your Investment in This Fund Fluctuate? .................  3
Fees and Expenses ..........................................................  5
Fund Investments ...........................................................  6
Fund and Portfolio Management .............................................. 11
Using Mutual Funds in an Investment Program ................................ 13
How to Invest .............................................................. 14
Important Information About Purchases and Redemptions ...................... 17
Exchanges .................................................................. 18
Shareholder Information .................................................... 18
Financial Highlights ....................................................... 21
Appendix A ................................................................. 22
Appendix B ................................................................. 24

<PAGE>

USAA Investment  Management Company manages this Fund. For easier reading, USAA
Investment  Management  Company will be referred to as "we" or "us"  throughout
the Prospectus.

WHAT IS THE FUND'S INVESTMENT OBJECTIVE AND MAIN STRATEGY?

The Fund seeks to match,  as closely  as  possible  (before  the  deduction  of
expenses),  the  performance of the S&P 500 Index 1, which emphasizes stocks of
large U.S. companies.  The Fund seeks to achieve its objective by investing all
of its investable assets in the Equity 500 Index Portfolio  (Portfolio),  which
is a separate mutual fund advised by Bankers Trust Company (Bankers Trust) with
an  identical  investment  objective.  To track the S&P 500 Index as closely as
possible,  Bankers  Trust  attempts  to keep the  Portfolio  fully  invested in
stocks.  The Portfolio  invests in stocks of companies  included in the S&P 500
Index that  Bankers  Trust  believes are  representative  of the entire S&P 500
Index. The investment  performance of the Fund will correspond  directly to the
investment performance of the Portfolio.

The Funds Board of Directors may change the Funds investment  objective without
shareholder approval.

In view of the risks inherent in all  investments  in  securities,  there is no
assurance that the Funds  objective will be achieved.  See FUND  INVESTMENTS on
page 6 for more information.
    
WHAT IS THE S&P 500 INDEX?
   
The S&P 500 Index is a  well-known  stock  market  index that  includes  common
stocks  of  500  companies  from  several  industrial  sectors  representing  a
significant  portion of the market value of all stocks  publicly  traded in the
United States.  Most of these stocks are listed on the New York Stock Exchange.
See ADDITIONAL INFORMATION ON THE S&P 500 INDEX on page 10.

MAIN RISKS OF INVESTING IN THIS FUND

The primary risk of investing in this Fund is market risk.

*    MARKET RISK involves the possibility that the Funds  investments in stocks
     will decline  because of falls in the stock market,  reducing the value of
     the company's stock, regardless of the success or failure of the company's
     operations.
    
____________________

1    "Standard & Poor's(R),"  "S&P(R),"  "Standard & Poor's 500," "S&P 500(R),"
     and "500" are trademarks of The McGraw-Hill Companies,  Inc. and have been
     licensed for use by Bankers Trust Company.

                                       2
<PAGE>
   
Other risks of the Fund described later in the Prospectus  include the risks of
cash flow and  investments in options and futures.  As with other mutual funds,
losing money is also a risk of investing in this Fund.

As you consider an investment  in this Fund,  you should also take into account
your tolerance for the daily  fluctuations of the financial markets and whether
you can afford to leave your money in the  investment  for long periods of time
to ride out down periods.

An  investment  in this Fund is not a deposit  of USAA  Federal  Savings  Bank,
Bankers Trust  Company,  or any other bank, and is not insured or guaranteed by
the Federal Deposit Insurance Corporation or any other government agency.

[CAUTION LIGHT GRAPHIC]
Look for this symbol throughout the Prospectus. We use it to mark more detailed
information about the main risks you will face as a Fund shareholder.
    
IS THIS FUND FOR YOU?

This Fund might be appropriate as part of your investment portfolio if . . .

*    You are looking for a convenient and cost-efficient  means of investing in
     a portfolio that generally reflects the performance of the stock market.
   
*    You are looking for some dividend income.
    
*    You are willing to accept moderate risk.

This Fund MAY NOT be appropriate as part of your investment portfolio if . . .
   
*    You need steady income and stability of principal.
    
*    You are unwilling to take greater risk for long-term goals.
*    You are unable or reluctant to invest for a period of five years or more.
*    You need an investment that provides tax-free income.
   
The  Fund  by  itself  does  not  constitute  a  balanced  investment  program.
Diversifying  your investments may improve your long-run  investment return and
lower the volatility of your overall investment portfolio.

COULD THE VALUE OF YOUR INVESTMENT IN THIS FUND FLUCTUATE?

Yes, it could.  Bankers Trust attempts to keep the Portfolio  fully invested in
stocks that are representative of the S&P 500 Index as a whole. Therefore,  the
value of your  investment in this Fund will fluctuate with the changing  market
value of the investments in the Portfolio.

                                       3
<PAGE>
The bar chart shown below illustrates the Funds volatility and performance from
year to year over the life of the Fund.

TOTAL RETURN

All mutual funds must use the same formula to calculate total return.

[SIDE BAR]
TOTAL RETURN MEASURES THE PRICE CHANGE IN A SHARE ASSUMING THE REINVESTMENT OF 
ALL DIVIDEND INCOME AND CAPITAL GAIN DISTRIBUTIONS.

[BAR CHART]
                   CALENDAR           TOTAL 
                     YEAR            RETURN

                     1997            33.03%
                     1998            28.62%

                     *Fund began operations on May 1, 1996.

     THE FUNDS TOTAL  RETURN FOR THE  THREE-MONTH  PERIOD ENDED MARCH 31, 1999,
     WAS ____%.

During the  periods  shown in the bar chart,  the  highest  total  return for a
quarter was 21.33%  (quarter  ending  December  31,  1998) and the lowest total
return for a quarter was -9.03% (quarter ending September 30, 1998).

The table below shows how the Funds  average  annual  returns for the  one-year
period as well as the life of the Fund  compared  to those of the S&P 500 Index
itself. Unlike an index, the Fund has operating expenses.  Therefore, while the
Fund  attempts to track the S&P 500 Index as closely as  possible,  it will not
match exactly the performance of the Index.  Keep in mind, the S&P 500 Index is
a model, not an actual portfolio.  It is a passive measure of U.S. stock market
returns. It does not factor in the costs of buying, selling, and holding stocks
- -- costs which are reflected in the Funds results.  Also, remember,  historical
performance does not necessarily indicate what will happen in the future.

===============================================================================
  Average Annual Total Returns                     Since Fund's
  (for the periods ending              Past        Inception on
  December 31, 1998)                  1 Year        May 1, 1996
===============================================================================
  S&P 500 Index Fund*                 28.62%          29.67%
- -------------------------------------------------------------------------------
  S&P 500 Index                       28.60%          29.00%
===============================================================================

*EXCLUDES $10 ACCOUNT  MAINTENANCE FEE, WHICH IS WAIVED FOR ACCOUNTS OF $10,000
OR MORE.
    
                                       4
<PAGE>
                              [TELEPHONE GRAPHIC]
   
                                  TouchLine sm
    
                                 1-800-531-8777
                                     PRESS
                                       1
                                      THEN
                                       1
                                      THEN
                                     3 4 #
   
Please  consider  performance  information  in light of the  Fund's  investment
objective and policies and market  conditions during the reported time periods.
The value of your  shares  may go up or down.  For the most  current  price and
return   information  for  this  Fund,  you  may  call  USAA  TouchLine  sm  at
1-800-531-8777.  Press 1 for the Mutual Fund Menu, press 1 again for prices and
returns. Then, press 34# when asked for a Fund Code.
    
                                NEWSPAPER SYMBOL
                                     S&PIdx

                                 TICKER SYMBOL
                                     USSPX

You can also find the most current price of your shares in the business section
of your newspaper in the mutual fund section under the heading "USAA Group" and
the symbol  "S&PIdx." If you prefer to obtain this  information from an on-line
computer service, you can do so by using the ticker symbol "USSPX."

FEES AND EXPENSES

This summary  shows what it will cost you directly or  indirectly  to invest in
the Fund.  The Board of Directors of USAA Mutual Fund,  Inc., of which the Fund
is a series, believes that the aggregate per share expenses of the Fund and the
Equity 500 Index Portfolio (Portfolio) will be less than or approximately equal
to the expenses which the Fund would incur if the investable assets (Assets) of
the Fund were invested  directly in the types of  securities  being held by the
Portfolio.

Shareholder Transaction Expenses -- Fees You Pay Directly
   
There are no fees or sales loads  charged to your  account when you buy or sell
Fund  shares.  However,  if you sell  shares  and  request  your  money by wire
transfer,  there is a $10 fee.  (Your bank may also charge a fee for  receiving
wires.)
    
Annual Fund Operating Expenses -- Fees You Pay Indirectly
   
Fund expenses come out of the Funds assets and are reflected in the Funds share
price and  dividends.  "Other  Expenses"  include  expenses  such as custodian,
administration,  and legal fees.  The  figures  below are based upon the actual
expenses of the Fund and Portfolio  combined  during the past fiscal year ended
December 31, 1998, as adjusted to reflect  changes in the underlying  contracts
for services, and are calculated as a percentage of average net assets (ANA).
    

[SIDE BAR]
12B-1 FEES -- SOME MUTUAL FUNDS CHARGE THESE FEES TO PAY FOR ADVERTISING AND
OTHER COSTS OF SELLING FUND SHARES.


   
               Investment Advisory Fees           .075%
               Distribution (12b-1) Fees           None
               Other Expenses                     .105%
                                                  -----
               Total Annual Operating Expenses    .18%
                                                  =====
    
We are contractually  entitled to receive fees from the Fund only to the extent
that the aggregate annual  operating  expenses of the Fund and the Portfolio do
not exceed .18% of the Funds ANA.
                                       5
<PAGE>
   
USAA Shareholder  Account  Services,  the Funds transfer agent,  assesses a $10
annual  account  maintenance  fee to  allocate  part  of  the  fixed  costs  of
maintaining  shareholder  accounts.  We  deduct  $2.50  per  quarter  from your
dividends  to pay the annual  fee.  We will waive this fee if you  maintain  an
account balance of $10,000 or more. See SHAREHOLDER  INFORMATION on page 18 for
further information.

Example of Effect of Fund's Operating Expenses

This example  provides you a comparison of investing in this Fund with the cost
of investing in other mutual funds. Although your actual costs may be higher or
lower, you would pay the following expenses on a $10,000  investment,  assuming
(1)5% annual return,  (2)the Fund's operating expenses remain the same, and (3)
you redeem all of your shares at the end of the periods shown.

                              1 year    $18
                              3 years    58
                              5 years   101
                             10 years   230
    
FUND INVESTMENTS
   
Principal Investment Strategies and Risks
    
[SIDE BAR]
                                 HOW A MASTER-
                               FEEDER STRUCTURE
                                  OPERATES -

                                YOU BUY SHARES
                                  IN THE FUND

                                   THE FUND
                                  INVESTS IN
                                 THE PORTFOLIO

                                 THE PORTFOLIO
                                  INVESTS IN
                                    S&P 500
                                  STOCKS AND
                               OTHER SECURITIES

  Q    What is the Funds principal investment strategy?
   
  A    Unlike other  mutual  funds that  directly  acquire and manage their own
       portfolio securities, the Fund seeks to achieve its investment objective
       by  investing  all of its  Assets  in the  Equity  500  Index  Portfolio
       (Portfolio),  a separate  registered  investment  company  with the same
       investment  objective  as the  Fund.  Therefore,  your  interest  in the
       Portfolios securities is indirect, and the investment characteristics of
       the Fund will correspond  directly to those of the Portfolio.  This type
       of arrangement is commonly referred to as a master-feeder structure.
    
  Q    How do funds in a master-feeder structure operate?
   
  A    The  Portfolio is  considered a master  fund.  The Fund is  considered a
       feeder  fund  and  invests  all of its  Assets  in  the  Portfolio.  The
       Portfolio may also accept investments from other feeder funds, typically
       mutual funds or institutional investors. All feeder funds will invest in
       the Portfolio under the same terms and conditions

                                       6
<PAGE>

     and will bear the  Portfolios  expenses  in  proportion  to their  assets.
     However,   each  feeder  fund  can  set  its  own  transaction   minimums,
     fund-specific  expenses,  and other  conditions.  Therefore,  investors in
     different feeder funds may experience different returns.

[CAUTION LIGHT GRAPHIC]
MASTER-FEEDER  STRUCTURE  RISK.  Actions of larger feeder funds may  materially
affect smaller feeder funds investing in the Portfolio. For example, if a large
feeder fund withdraws from the  Portfolio,  the remaining  funds may experience
proportionately  higher operating expenses resulting in lower returns (however,
this possibility  exists as well for traditionally  structured funds which have
large  institutional  investors).  Additionally,  the Portfolio may become less
diverse,  resulting  in increased  portfolio  risk.  Also,  feeder funds with a
greater pro rata ownership in the Portfolio could have effective voting control
of the operations of the Portfolio.
    
  Q    How is the Portfolio managed?
   
  A    The  Portfolio  is not  managed  according  to  traditional  methods  of
       "active" investment management,  which involve the buying and selling of
       securities  based upon  economic,  financial,  and market  analyses  and
       investment  judgment.  Instead,  the  Portfolio  utilizes a "passive" or
       "indexing"  investment  approach  in an attempt to match,  as closely as
       possible,  the performance of the S&P 500 Index. This is done by holding
       either all, or a representative  sample, of the securities in the index.
       An index is a group of securities whose overall performance is used as a
       standard to measure investment performance.

  Q    As an investor, what are the benefits of using a "passive" or "indexing"
       approach?

  A    Indexing appeals to many investors for the following reasons:

       * provides  simplicity  because it is a straightforward  market-matching
         strategy;

       * generally  provides  diversification by investing in a wide variety of
         companies and industries;

       * tends to have lower costs  because index funds do not have many of the
         expenses of actively managed funds such as research; and

       * usually has  relatively  low trading  activity;  therefore,  brokerage
         commissions tend to be lower.
    
                                       7
<PAGE>
  Q    What is the Portfolio's investment policy?
   
  A    Under normal  conditions,  the Portfolio will invest at least 80% of its
       assets in stocks of  companies  included  in the S&P 500  Index,  except
       Bankers Trust  Corporation.  In seeking to mirror the performance of the
       S&P 500  Index,  Bankers  Trust,  the  Portfolio's  investment  adviser,
       attempts  to  allocate  the  Portfolio's  investments  among  stocks  in
       approximately  the same weightings as the S&P 500 Index,  beginning with
       the stocks that make up the larger portion of the Index's value. Bankers
       Trust may  exclude or may remove  any S&P stock from the  Portfolio,  if
       Bankers  Trust  believes  that the  stock is  illiquid  or has  impaired
       financial  conditions due to extraordinary  events.  Over the long term,
       Bankers  Trust  seeks  a  correlation  between  the  performance  of the
       Portfolio,  before  expenses,  and that of the S&P 500  Index of 0.98 or
       better.  A figure of 1.00 would indicate  perfect  correlation,  meaning
       that the  Portfolio  always  moves up in value when the Index  rises and
       down in value when the Index  declines.  In the unlikely  event that the
       targeted  correlation is not achieved,  the Portfolios Board of Trustees
       will consider alternative structures.

[CAUTION LIGHT GRAPHIC]
MARKET RISK. Because this Fund invests in stocks, it is subject to stock market
risk. Stock prices in general may decline over short or even extended  periods,
regardless of the success or failure of a company's  operations.  Stock markets
tend to run in cycles, with periods when stock prices generally go up, known as
"bull" markets, and periods when stock prices generally go down, referred to as
"bear" markets. Stocks tend to go up and down more than bonds.

  Q    How will Bankers Trust invest to mirror the  performance  of the S&P 500
       Index?

  A    The  Portfolio  cannot as a  practical  matter hold every one of the 500
       stocks in the S&P 500 Index.  Because it would be very  expensive to buy
       and sell all of the  stocks in the S&P 500 Index,  Bankers  Trust uses a
       "sampling" technique.

       * First  -- the  Portfolio  buys  the  stocks  that  make up the  larger
         portions of the Index's  value in roughly the same  proportion  as the
         Index.

       * Second -- smaller  stocks  are  analyzed  and  selected.  In  choosing
         smaller  stocks,  the  Portfolio  tries to match the industry and risk
         characteristics  of all of the  small  companies  in the S&P 500 Index
         without buying all of those stocks.

                                       8
<PAGE>
       * Third -- the Portfolio  may invest in S&P 500 Index futures  contracts
         and similar instruments.

       This approach  allows the Portfolio to maintain  sufficient cash to meet
       redemption requests while minimizing costs.
    
  Q    Will the Portfolio purchase other types of securities?
   
  A    Under normal conditions, Bankers Trust will attempt to invest as much of
       the Portfolio's assets as is practical in stocks included in the S&P 500
       Index.  However,  the  Portfolio  may  hold up to 20% of its  assets  in
       short-term  debt  securities,  money market  instruments and stock index
       futures and options.

       For a  description  of the futures and options the Portfolio may use and
       some of their associated risks, see APPENDIX A on page 22.

[CAUTION LIGHT GRAPHIC]
CASH  FLOW  RISK.  The  ability  of the Fund and the  Portfolio  to meet  their
investment objectives depends to some extent on the cash flow in and out of the
Fund and other investors in the Portfolio. When a shareholder buys or sells the
Fund's  shares,  the  Portfolio  generally  has to buy or  sell  stocks  in its
portfolio.  Changes in the Fund's cash flow  affect how  closely the  Portfolio
mirrors the S&P 500 Index.

[CAUTION LIGHT GRAPHIC]
INVESTMENTS  IN OPTIONS AND FUTURES.  The  Portfolio  may invest,  to a limited
extent,  in stock index futures or options.  The  Portfolio  will not use these
derivative  instruments  for speculative  purposes or as leveraged  investments
that magnify the gains or losses of an  investment.  Bankers  Trust  invests in
stock  index  futures  and  options  to keep  cash on hand to meet  shareholder
redemptions or other needs while simulating full  investments in stocks.  These
investments  tend to reduce the Portfolios  transaction  cost or add value when
these  instruments are favorably  priced.  Risks associated with investments in
futures and options include the risk that the futures or options  contract will
not fully offset the underlying position and investments in futures and options
used for risk  management  may not have the intended  effects and may result in
losses or missed opportunities.

[SIDE BAR]
FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS ARE USED AS A LOW COST 
METHOD OF GAINING EXPOSURE TO A PARTICULAR SECURITIES MARKET WITHOUT INVESTING
DIRECTLY IN THOSE SECURITIES

If the Portfolio  invests in futures contracts and options on futures contracts
for  non-hedging  purposes,  the margin  and  premiums  required  to make those
investments  will not exceed 5% of the Fund's net asset value after taking into
account unrealized  profits and losses on the contracts.  Futures contracts and
options on futures  contracts used for  non-hedging  purposes  involve  greater
risks than stock investments.
    
                                       9
<PAGE>
  Q    Could the Fund withdraw its interest in the Portfolio?
   
  A    Yes,  the Fund may  withdraw its  investment  from the  Portfolio at any
       time,  if the  Board  of  Directors  determines  that it is in the  best
       interest of the Fund's  shareholders  to do so.  Certain  changes in the
       Portfolio's investment objective,  policies, or restrictions may require
       the  Fund to  withdraw  its  interest  in the  Portfolio.  Upon any such
       withdrawal, we would become responsible for directly managing the Assets
       of the Fund.  In addition,  the Board of Directors  would then  consider
       whether to invest in a different master portfolio, or take other action.
       Any such withdrawal,  however,  could result in a distribution "in kind"
       of  portfolio  securities  (as opposed to a cash  distribution  from the
       Portfolio).  If securities are  distributed,  the Fund  generally  would
       incur  brokerage,  tax, or other charges in converting the securities to
       cash.
    
Additional Information on the S&P 500 Index

[SIDE BAR]
                                    MARKET
                                CAPITALIZATION
                                    EQUALS
                                  # OF SHARES
                                  OUTSTANDING
                                 MULTIPLIED BY
                                  THE STOCK'S
                                 CURRENT PRICE
   
Stocks  in  the  S&P  500  Index  are   weighted   according  to  their  market
capitalization.  Bankers  Trust  believes that the  performance  of the S&P 500
Index is  representative of the performance of publicly traded common stocks in
general.  S&P  determines  the  composition  of the S&P 500 Index based on such
factors as the market capitalization and trading activity of each stock and its
adequacy as a  representation  of stocks in a particular  industry  group.  The
composition may change from time to time.

The Fund and the Portfolio are not  sponsored,  endorsed,  sold, or promoted by
S&P. S&P makes no representation or warranty, express or implied, to the owners
of the  Fund  or the  Portfolio  or any  member  of the  public  regarding  the
advisability  of  investing  in  securities  generally  or in the  Fund and the
Portfolio  particularly  or the  ability of the S&P 500 Index to track  general
stock  market  performance.  S&P does not  guarantee  the  accuracy  and/or the
completeness of the S&P 500 Index or any data included therein.

S&P makes no warranty,  express or implied, as to the results to be obtained by
the Fund or the Portfolio,  owners of the Fund or the  Portfolio,  or any other
person  or  entity  from  the use of the S&P 500  Index  or any  data  included
therein.  S&P makes no  express  or implied  warranties  and  hereby  expressly
disclaims all such  warranties of  merchantability  or fitness for a particular
purpose or use with respect to the S&P 500 Index or any data included therein.
    
                                      10
<PAGE>
FUND AND PORTFOLIO MANAGEMENT

The Board of Directors of USAA Mutual Fund, Inc.  (Company),  of which the Fund
is a series, supervises the business affairs of the Company, while the business
affairs  of the  Portfolio  are  subject  to the  supervision  of its  Board of
Trustees. No Director of the Company also serves as a Trustee of the Portfolio.

USAA Investment Management Company
   
The Company has retained us, USAA Investment  Management  Company,  to serve as
the manager,  investment  adviser,  and distributor for the Company.  We are an
affiliate  of  United  Services   Automobile   Association   (USAA),  a  large,
diversified financial services institution.  As of the date of this Prospectus,
we had approximately $___ billion in total assets under management. Our mailing
address is 9800 Fredericksburg Road, San Antonio, TX 78288.

We provide  certain  management  services to the Fund. We are  responsible  for
monitoring the services provided to the Portfolio by Bankers Trust,  subject to
the  authority of and  supervision  by the  Company's  Board of  Directors.  We
receive no fee for providing these monitoring  services.  However, in the event
the Company's Board of Directors  determines it is in the best interests of the
Fund's  shareholders  to withdraw its investment in the Portfolio,  we would be
responsible for directly managing the assets of the Fund. In such an event, the
Fund would pay us an annual fee of one-tenth  of one percent  (.10%) of average
net assets, accrued daily and paid monthly. We also provide services related to
selling the Fund's shares and receive no compensation for those services.
    
Although  our  officers and  employees,  as well as those of the  Company,  may
engage  in  personal  securities  transactions,  they  are  restricted  by  the
procedures in a Joint Code of Ethics adopted by the Company and us.

Bankers Trust Company
   
At the  present  time,  the  Company  seeks to achieve  the  Fund's  investment
objective by investing  all the Fund's Assets in the  Portfolio.  The Portfolio
has retained the services of Bankers Trust Company,  with  headquarters  at 130
Liberty Street, New York, New York 10006, as investment adviser.

Bankers Trust is a worldwide  merchant bank dedicated to servicing the needs of
corporations,   governments,   financial  institutions,  and  private  clients.
Investment management is a core business of Bankers Trust with assets under its
global management totaling $338 billion as of December 31, 1998. Of that total,
approximately $156 billion are in U.S. assets.

                                      11
<PAGE>
Bankers  Trust is a wholly  owned  subsidiary  of  Bankers  Trust  Corporation.
Bankers Trust Corporation has entered into an Agreement and Plan of Merger with
Deutsche  Bank AG,  dated as of November 30, 1998,  under which  Bankers  Trust
Corporation  would  merge  with  and into a  subsidiary  of  Deutsche  Bank AG.
Deutsche  Bank AG is a major global  banking  institution  that is engaged in a
wide range of financial  services,  including  retail and  commercial  banking,
investment  banking and insurance.  The  transaction is contingent upon various
regulatory  approvals,  as well as the  approval  of the  Portfolio's  Board of
Trustees and the Portfolio's  shareholders.  If the transaction is approved and
completed, Deutsche Bank AG, as Bankers Trusts new parent company, will control
the operations of Investment  Adviser.  Bankers Trust believes that, under this
new arrangement,  the services provided to the Fund will be maintained at their
current level.
    
Under its Investment Advisory Agreement,  Bankers Trust receives a fee from the
Portfolio,  computed daily and paid monthly, at the annual rate of .075% of the
average daily net assets of the Portfolio.
          
Portfolio Turnover

   
The annual  portfolio  turnover rate measures the frequency  that the Portfolio
sells and replaces the value of its  securities  for a given period.  We do not
expect the Fund to have a high portfolio turnover rate.
    
Portfolio Manager
   
Frank  Salerno,  Managing  Director of Bankers Trust,  is  responsible  for the
day-to-day  management of the Portfolio and has managed the Portfolio since its
inception  in 1992.  Mr.  Salerno has 16 years  investment  experience  and has
worked for Bankers Trust for 18 years. He holds an MBA from New York University
and a BS from Syracuse University.
    
Administrator

Under the  Administration  Agreement  with the Fund, we calculate the net asset
value of the Fund and generally  assist the Company's Board of Directors in all
aspects of the  administration  and operation of the Fund.  The  Administration
Agreement  provides  for the  Fund to pay us a fee,  computed  daily  and  paid
monthly, at an annual rate equal to the lesser of (1) .06% of the average daily
net  assets  of the Fund or (2) the  amount  that  brings  the  total  Fund and
Portfolio annual  operating  expenses as a percentage of the Fund's average net
assets up to .18%. We may also delegate one or more of our  responsibilities to
others, at our expense.

Under an  Administration  and Services  Agreement with the  Portfolio,  Bankers
Trust calculates the value of the assets of the Portfolio and generally assists
the  Portfolio's  Board of Trustees in all  aspects of the  administration  and

                                      12
<PAGE>
operation of the Portfolio.  The Administration and Services Agreement provides
for the Portfolio to pay Bankers Trust a fee,  computed daily and paid monthly,
at an annual rate equal to the lesser of (1) .005% of the  Portfolio's  average
daily net  assets or (2) the amount  that  brings  the total  Portfolio  annual
operating expenses as a percentage of the Portfolio's  average net assets up to
 .08%.  Bankers Trust may also delegate one or more of its  responsibilities  to
others,  at Bankers  Trust's  expense.  See  ADMINISTRATOR  in the Statement of
Additional Information for further information.

USING MUTUAL FUNDS IN AN INVESTMENT PROGRAM

I. The Idea Behind Mutual Funds

Mutual funds provide small investors some of the advantages  enjoyed by wealthy
investors.  A  relatively  small  investment  can  buy  part  of a  diversified
portfolio. That portfolio is managed by investment professionals, relieving you
of the  need to make  individual  stock  or bond  selections.  You  also  enjoy
conveniences,  such as daily  pricing,  liquidity,  and in the case of the USAA
Family of Funds, no sales charge. The portfolio, because of its size, has lower
transaction  costs on its trades than most individuals would have. As a result,
you own an investment  that in earlier times would have been  available only to
very wealthy people.

II. Using Funds in an Investment Program

In  choosing a mutual  fund as an  investment  vehicle,  you are giving up some
investment decisions,  but must still make others. The decisions you don't have
to make are those involved with choosing individual  securities.  An investment
adviser  will  perform  that  function.  In  addition,  we will arrange for the
safekeeping of securities,  auditing the annual financial statements, and daily
valuation of the Fund, as well as other functions.

You,  however,  retain  at  least  part of the  responsibility  for an  equally
important  decision.  This decision involves  determining a portfolio of mutual
funds that balances your  investment  goals with your tolerance for risk. It is
likely that this decision may include the use of more than one fund of the USAA
Family of Funds.

For example,  assume you wish to invest in a widely  diversified,  common stock
portfolio.  You could  combine  an  investment  in the S&P 500 Index  Fund with
investments  in other  mutual  funds  that  invest in stocks of large and small
companies  and  high-dividend  stocks.  This is just one way you could  combine
funds to fit your own risk and reward goals.

                                      13
<PAGE>
III. USAA's Family of Funds
   
We offer you  another  alternative  with our  asset  strategy  funds  listed in
APPENDIX B under asset allocation on page 24. These unique mutual funds provide
a  professionally  managed,  diversified  investment  portfolio within a mutual
fund.  Designed for the individual who prefers to delegate the asset allocation
process to an investment  manager,  their  structure  achieves  diversification
across a number of investment categories.

Whether you prefer to create  your own mix of mutual  funds or use a USAA Asset
Strategy  Fund,  the USAA  Family of Funds  provides  a broad  range of choices
covering   just  about  any   investors   investment   objectives.   Our  sales
representatives  stand  ready to assist you with your  choices  and to help you
craft a  portfolio  to meet your  needs.  Refer to  APPENDIX B on page 24 for a
complete list of the USAA Family of No-Load Mutual Funds.
    
HOW TO INVEST

Purchase of Shares

OPENING AN ACCOUNT
   
You may open an account and make an investment  as described  below by mail, in
person,  bank wire,  electronic  funds  transfer  (EFT),  or phone. A complete,
signed application is required to open your initial account. However, after you
open  your  initial  account  with us,  you  will not need to fill out  another
application unless the registration is different.
    
TAX ID NUMBER

Each shareholder  named on the account must provide a social security number or
tax identification number to avoid possible withholding requirements.

EFFECTIVE DATE
   
When you make a purchase, your purchase price will be the net asset value (NAV)
per share next  determined  after we receive your  request in proper form.  The
Fund's NAV is determined at the close of the regular trading session  (generally
4:00 p.m. Eastern Time) of the New York Stock Exchange (NYSE) each day the NYSE
is open.  If we receive  your  request  and  payment  prior to that time,  your
purchase price will be the NAV per share determined for that day. If we receive
your  request or payment  after the NAV per share is  calculated,  the purchase
will be effective on the next business day. If you plan to purchase Fund shares
with a foreign check, we suggest you convert your foreign check to U.S. dollars
prior to  investment  in the Fund.  This will  avoid a  potential  delay in the
effective date of your purchase of up to four to six weeks. Furthermore, a bank
charge may be assessed in the clearing process, which will be deducted from the
amount of the purchase.
    
                                      14
<PAGE>
MINIMUM INVESTMENTS

INITIAL PURCHASE

[MONEY GRAPHIC]
*    $3,000 [$2,000 for IRAs]

ADDITIONAL PURCHASES

*    $50.  Employees of USAA and its  affiliated  companies may open an account
     through  payroll  deduction  for as  little as $25 per pay  period  with a
     $3,000 initial investment.

HOW TO PURCHASE

MAIL

[ENVELOPE GRAPHIC]
*    To open an account, send your application and check to:
       USAA Investment Management Company
       9800 Fredericksburg Road
       San Antonio, TX 78288

*    To add to your account, send your check and the "Invest by Mail" stub that
     accompanies your Fund's transaction confirmation to the Transfer Agent:
       USAA Shareholder Account Services
       9800 Fredericksburg Road
       San Antonio, TX 78288

IN PERSON

   
[HANDSHAKE GRAPHIC]
*    To open an account, bring your application and check to:
       USAA Investment Management Company
       USAA Federal Savings Bank
       10750 Robert F. McDermott Freeway
       San Antonio, TX 78288
    
BANK WIRE

   
[WIREGRAPHIC] 
*    Instruct  your bank  (which may charge a fee for the  service) to wire the
     specified amount to the Fund as follows:
       State Street Bank and Trust Company
       Boston, MA 02101
       ABA#011000028
       Attn: USAA S&P 500 Index Fund
       USAA Account Number: 69384998
       Shareholder(s) Name(s)____________________________________________
       Shareholder(s) Mutual Fund Account Number_________________________
    
                                      15
<PAGE>
ELECTRONIC FUNDS TRANSFER

[CALENDAR GRAPHIC]
*    Additional  purchases  on a  regular  basis  can be  deducted  from a bank
     account, paycheck,  income-producing investment, or USAA money market fund
     account.  Sign up for these  services  when  opening  an  account  or call
     1-800-531-8448 to add these services.

PHONE 1-800-531-8448

[TELEPHONE GRAPHIC]
   
*    If you have an existing  USAA mutual fund account and would like to open a
     new account or exchange to another USAA fund,  call for  instructions.  To
     open an account by phone, the new account must have the same  registration
     as your existing account.
    
Redemption of Shares

You may redeem Fund shares by any of the methods described below on any day the
NAV per share is calculated.  Redemptions are effective on the day instructions
are received in a manner as  described  below.  However,  if  instructions  are
received  after  the NAV per share  calculation  (generally  4:00 p.m.  Eastern
Time), redemption will be effective on the next business day.
   
We will send you your  money  within  seven days  after the  effective  date of
redemption.  Payment for redemption of shares purchased by EFT or check is sent
after the EFT or check has  cleared,  which  could  take up to 15 days from the
purchase date. If you are considering redeeming shares soon after purchase, you
should  purchase by bank wire or certified  check to avoid  delay.  For federal
income tax purposes,  a redemption  is a taxable  event;  and as such,  you may
realize a capital gain or loss.  Such capital  gains or losses are based on the
difference  between your cost basis in the shares and the price  received  upon
redemption.
    
In  addition,  the  Company may elect to suspend  the  redemption  of shares or
postpone the date of payment in limited circumstances.

HOW TO REDEEM

WRITTEN, FAX, TELEGRAPH, OR TELEPHONE

[FAX MACHINE GRAPHIC]
*    Send  your  written  instructions  to:
       USAA  Shareholder  Account  Services
       9800 Fredericksburg Road
       San Antonio, TX 78288

*    Send  a  signed  fax  to  1-800-292-8177,  or  send  a  telegram  to  USAA
     Shareholder Account Services.

*    Call toll free 1-800-531-8448, in San Antonio, 456-7202.
   
Telephone redemption privileges are automatically established when you complete
your application. The Fund will employ reasonable procedures to

                                      16
<PAGE>
confirm that instructions communicated by telephone are genuine; and if it does
not,  it may be  liable  for  any  losses  due to  unauthorized  or  fraudulent
instructions.  Before any  discussion  regarding  your  account,  the following
information is obtained: (1) USAA number and/or account number, (2) the name(s)
on the account registration,  and (3) social security/tax identification number
or  date  of  birth  of  the  registered   account  owner(s)  for  the  account
registration.  Additionally, all telephone communications with you are recorded
and confirmations of account transactions are sent to the address of record. If
you were issued stock  certificates  for your shares,  redemption by telephone,
fax, or telegram is not available.
    
IMPORTANT INFORMATION ABOUT PURCHASES AND REDEMPTIONS

[INVESTOR'S GUIDE GRAPHIC]
Investor's Guide to USAA Mutual Fund Services
   
Upon your initial  investment with us, you will receive the INVESTOR'S GUIDE to
help you get the most out of your USAA mutual fund account and to assist you in
your role as an investor.  In the INVESTOR'S  GUIDE,  you will find  additional
information on purchases,  redemptions,  and methods of payment.  You will also
find in-depth information on automatic investment plans, shareholder statements
and reports, and other useful information.
    
Company Rights

The Company reserves the right to:

*    reject  purchase  or  exchange  orders  when in the best  interest  of the
     Company;

*    limit or  discontinue  the  offering  of  shares of any  portfolio  of the
     Company without notice to the shareholders;

*    impose a  redemption  charge of up to 1% of the net asset  value of shares
     redeemed  if  circumstances   indicate  a  charge  is  necessary  for  the
     protection of remaining investors (for example, if excessive market-timing
     share activity unfairly burdens  long-term  investors);  however,  this 1%
     charge will not be imposed  upon  shareholders  unless  authorized  by the
     Board of Directors and the required notice has been given to shareholders;

*    require a  signature  guarantee  for  transactions  or  changes in account
     information in those  instances where the  appropriateness  of a signature
     authorization  is in question.  The  Statement of  Additional  Information
     contains information on acceptable guarantors;

*    redeem an account with less than 10 shares, with certain limitations.

                                      17
<PAGE>
EXCHANGES

Exchange Privilege
   
The exchange privilege is automatic when you complete your application. You may
exchange  shares  among Funds in the USAA Family of Funds,  provided you do not
hold these shares in stock  certificate  form and the shares to be acquired are
offered in your state of residence.  After we receive the exchange orders,  the
Fund's  transfer agent will  simultaneously  process  exchange  redemptions and
purchases  at  the  share  prices  next  determined.  The  investment  minimums
applicable to share  purchases also apply to exchanges.  For federal income tax
purposes,  an exchange  between Funds is a taxable event;  and as such, you may
realize a capital gain or loss.  Such capital  gains or losses are based on the
difference  between your cost basis in the shares and the price  received  upon
exchange.

The Fund has undertaken certain procedures regarding telephone  transactions as
described on page 16.
    
Exchange Limitations, Excessive Trading

To  minimize  Fund costs and to protect the Funds and their  shareholders  from
unfair expense burdens,  the Funds restrict excessive  exchanges.  The limit on
exchanges  out of any Fund in the USAA Family of Funds for each  account is six
per calendar  year (except  there is no  limitation on exchanges out of the Tax
Exempt Short-Term Fund,  Short-Term Bond Fund, or any of the money market funds
in the USAA Family of Funds).

SHAREHOLDER INFORMATION

Share Price Calculation

   
                                 NAV PER SHARE
                                    EQUALS
                                 TOTAL ASSETS
                                     MINUS
                                  LIABILITIES
                                  DIVIDED BY
                                  # OF SHARES
                                  OUTSTANDING

The price at which you  purchase  and  redeem  Fund  shares is equal to the net
asset value (NAV) per share determined on the effective date of the purchase or
redemption.  You may buy and sell Fund  shares  at the NAV per share  without a
sales charge. The Funds NAV per share is calculated at the close of the regular
trading  session of the NYSE,  which is usually  4:00 p.m.  Eastern  Time.  The
Portfolio's  securities  and other assets are valued  primarily on the basis of
market quotations or, if quotations are not readily available, by a method that
the Portfolio's Board of Trustees believes accurately reflects fair value.
    
Dividends and Distributions

The Fund pays net investment income dividends quarterly.  Any net capital gains
generally will be distributed at least annually.  The Fund will make additional
payments to shareholders,  if necessary, to avoid the imposition of any federal
income or excise tax.
                                      18
<PAGE>
   
We  will   automatically   reinvest  all  income  dividends  and  capital  gain
distributions in the Fund unless we receive  different  instructions  from you.
The share price will be the NAV of the Fund shares  computed on the ex-dividend
date. Any income dividends or capital gain  distributions paid by the Fund will
reduce the NAV per share by the amount of the  dividend  or  distribution.  You
should consider  carefully the effects of purchasing shares of the Fund shortly
before any dividend or distribution.  Although in effect this would be a return
of capital,  some or all of these  dividends and  distributions  are subject to
taxes.
    
If  your  account  balance  is less  than  $10,000,  the  Transfer  Agent  will
automatically  deduct a $10 annual  account  maintenance  fee from the dividend
income paid to your account.  The $10 account  maintenance fee is deducted at a
rate of $2.50 per quarter from the  dividend.  If the dividend to be paid to an
account is less than the fee to be deducted,  a sufficient number of shares may
be  redeemed  from an account  to make up the  difference.  The annual  account
maintenance fee may be changed upon at least 30 days' notice to you.

We will invest any  dividend  or  distribution  payment  returned to us in your
account at the  then-current NAV per share.  Dividend and  distribution  checks
become  void six months  from the date on the  check.  The amount of the voided
check will be invested in your account at the then-current NAV per share.

Federal Taxes
   
This tax  information  is quite  general and refers to the  federal  income tax
provisions in effect as of the date of this Prospectus.  Note that the Taxpayer
Relief  Act  of  1997  and  the  technical   provisions   adopted  by  the  IRS
Restructuring  and Reform Act of 1998 may  affect the status and  treatment  of
certain  distributions   shareholders  receive  from  the  Fund.  Because  each
investor's tax circumstances are unique and because the tax laws are subject to
change, we recommend that you consult your tax advisor about your investment.
    
SHAREHOLDER -- Dividends from taxable net investment  income and  distributions
of net short-term capital gains are taxable to you as ordinary income,  whether
received  in cash or  reinvested  in  additional  shares.  A  portion  of these
dividends  may qualify for the 70%  dividends-received  deduction  available to
corporations.
   
Regardless  of the length of time you have held the Fund shares,  distributions
of net long-term  capital gains are taxable as long-term  capital gains whether
received in cash or reinvested in additional shares.
    
                                      19
<PAGE>
WITHHOLDING  -- Federal law requires the Fund to withhold and remit to the U.S.
Treasury a portion of the income dividends and capital gain  distributions  and
proceeds of redemptions paid to any non-corporate shareholder who:

*    fails to furnish the Fund with a correct tax identification number,
*    underreports dividend or interest income, or
*    fails to certify that he or she is not subject to withholding.

To avoid this withholding requirement, you must certify on your application, or
on a separate  Form W-9 supplied by the Fund's  transfer  agent,  that your tax
identification  number is correct and you are not  currently  subject to backup
withholding.
   
REPORTING -- The Fund will report  information  to you annually  concerning the
tax status of dividends and distributions for federal income tax purposes.

Year 2000

Like other organizations around the world, the Fund could be adversely affected
if the computer systems used by the Fund, its service  providers,  or companies
in which the Fund invests do not  properly  process and  calculate  information
that relates to dates beginning on January 1, 2000, and beyond.  This situation
may occur because for many years computer  programmers  used only two digits to
describe  years,  such as 98 for 1998. A program written in this manner may not
work when it encounters the year 00. To confront this situation, USAA companies
have spent much effort and money;  and we expect to have our systems  ready for
the Year 2000 by mid-1999. In addition, we are actively assessing the Year 2000
readiness of our service providers, partners, and companies in whose securities
we invest.  It is not possible for us to say that you will experience no effect
from this situation,  but we can say that we are making a large effort to avoid
any ill effects upon our  shareholders.  We do believe you are entitled to know
with  certainty that we will stand behind your share balance as of the close of
business in 1999. When the market reopens in 2000,  should any computer problem
cause a change in the number of shares in your  account,  we will  return  your
account to its proper share balance.

                                      20
<PAGE>
FINANCIAL HIGHLIGHTS

The financial  highlights  table is intended to help you  understand the Fund's
financial  performance since inception.  Certain information reflects financial
results for a single Fund share.  The total returns in the table  represent the
rate that an investor  would have earned (or lost) on an investment in the Fund
(assuming  reinvestment of all dividends and  distributions).  This information
has been audited by  PricewaterhouseCoopers  LLP, whose report,  along with the
Fund's  financial  statements,  is  included  in the  Annual  Report,  which is
available upon request.


                                                                   Eight Months
                                                                       Ended
                                          Year Ended December 31,  December 31,
                                      -----------------------------------------
                                            1998           1997        1996*
                                      -----------------------------------------

PER SHARE OPERATING PERFORMANCE
Net Asset Value at Beginning of Period    $15.16         $11.57         $10.00
                                       ----------------------------------------
Income from Investment Operations:
  Net Investment Income                      .21            .21            .12
  Net Realized and Unrealized Gain on
   Investment and Futures Transactions      4.11           3.59           1.57
                                      ----------------------------------------
Total from Investment Operations            4.32           3.80           1.69
Distributions from Net Investment Income    (.21)          (.21)          (.12)
                                      ----------------------------------------
Net Asset Value at End of Period          $19.27         $15.16         $11.57
                                      ========================================
Total Return (%)**                         28.62          33.03          16.90

SUPPLEMENTAL DATA AND RATIOS

Net Assets at End of Period (000)     $1,855,855       $630,619       $179,073
Ratios to Average Net Assets:
  Net Investment Income (%)                 1.40           1.64           2.09a
  Expenses, including Expenses of the
   Equity 500 Index Portfolio (%)            .18            .18            .18a
  Decrease Reflected in Above Expense
   Ratio Due to Absorption of Expenses
   by Bankers Trust and the Manager (%)      .02            .07            .15a

- --------------
*    Fund commenced operations May 1, 1996.
**   Assumes  reinvestment  of all  dividend  income  distributions  during the
     period; does not reflect $10 annual account maintenance fee.
a    Annualized.  The  ratio is not  necessarily  indicative  of 12  months  of
     operations.
    
                                      21
<PAGE>
                                   APPENDIX A

THE  FOLLOWING  ARE  DESCRIPTIONS  OF CERTAIN  TYPES OF SECURITIES IN WHICH THE
PORTFOLIO'S ASSETS MAY BE INVESTED:
           
OPTIONS ON STOCK INDICES

The  Portfolio  may purchase  and write put and call  options on stock  indices
listed on stock exchanges.  A stock index fluctuates with changes in the market
values of the stocks included in the index.

Options on stock indices are generally  similar to options on stock except that
the delivery requirements are different. Instead of giving the right to take or
make delivery of stock at a specified  price,  an option on a stock index gives
the holder the right to receive a cash  "exercise  settlement  amount" equal to
(a) the amount, if any, by which the fixed exercise price of the option exceeds
(in the  case of a put) or is less  than (in the  case of a call)  the  closing
value of the  underlying  index on the date of  exercise,  multiplied  by (b) a
fixed  "index  multiplier".  Receipt of this cash  amount  will depend upon the
closing  level of the stock index upon which the option is based being  greater
than,  in the case of a call,  or less than, in the case of a put, the exercise
price  of the  option.  The  amount  of cash  received  will be  equal  to such
difference between the closing price of the index and the exercise price of the
option  expressed  in dollars  times a  specified  multiple.  The writer of the
option is obligated,  in return for the premium  received,  to make delivery of
this amount. The writer may offset its position in stock index options prior to
expiration by entering into a closing  transaction on an exchange or the option
may expire unexercised.

[CAUTION  LIGHT  GRAPHIC]
Because the value of an index option depends upon movements in the level of the
index rather than the price of a particular  stock,  whether the Portfolio will
realize a gain or loss from the  purchase  or  writing  of  options on an index
depends  upon  movements  in the  level of stock  prices  in the  stock  market
generally or, in the case of certain indices, in an industry or market segment.
Accordingly, the Portfolio's successful use of options on stock indices will be
subject  to Bankers  Trust's  ability to  predict  correctly  movements  in the
direction of the stock  market  generally  or of a  particular  industry.  This
requires  different skills and techniques than predicting  changes in the price
of individual stocks.

FUTURES CONTRACTS ON STOCK INDICES
   
The Portfolio may enter into contracts  providing for the making and acceptance
of a cash settlement  based upon changes in the value of an index of securities
(Futures  Contracts).  This  investment  technique  is  designed  only to hedge
against  anticipated  future  changes in general  market prices that  otherwise
might either  adversely affect the value of securities held by the Portfolio or
adversely affect the prices of securities which are intended to be purchased at
a later date for the Portfolio.  A Futures Contract may also be entered into to
close out or offset an existing futures position.

In general, each transaction in Futures Contracts involves the establishment of
a position  that will move in a direction  opposite  to that of the  investment
being  hedged.  If these  hedging  transactions  are  successful,  the  futures
positions taken for the Portfolio will rise in value by

                                      22
<PAGE>
an amount that approximately offsets the decline in value of the portion of the
Portfolios  investments  which are being hedged.  Should  general market prices
move  in an  unexpected  manner,  the  full  anticipated  benefits  of  Futures
Contracts may not be achieved or a loss may be realized.
    
[CAUTION LIGHT GRAPHIC]
Although Futures  Contracts would be entered into for cash management  purposes
only, such  transactions do involve certain risks.  These risks could include a
lack of correlation  between the Futures  Contracts and the equity market being
hedged;  a potential  lack of liquidity in the  secondary  market and incorrect
assessments  of market trends,  which may result in poorer overall  performance
than if a Futures Contract had not been entered into.

Brokerage  costs will be incurred and  "initial  margin" will be required to be
posted  and  maintained  as  a  good-faith   deposit  against   performance  of
obligations under Futures  Contracts  written for the Portfolio.  The Portfolio
may not purchase or sell a Futures  Contract or options  thereon if immediately
thereafter its margin  deposits on its  outstanding  Futures  Contracts and its
premium paid on outstanding options thereon would exceed 5% of the market value
of the Portfolio's total assets.

OPTIONS ON FUTURES CONTRACTS

The  Portfolio  may invest in options on such  Futures  Contracts  for  similar
purposes.

ASSET COVERAGE

The Portfolio will cover  transactions in futures and related options,  as well
as   when-issued   and    delayed-delivery   as   required   under   applicable
interpretations of the Securities and Exchange Commission, either by owning the
underlying  securities or segregating  with the  Portfolio's  Custodian  liquid
securities  in an amount at all times  equal to or  exceeding  the  Portfolio's
commitment with respect to these instruments or contracts.

ILLIQUID SECURITIES
   
The Portfolio may invest up to 15% of the market value of the  Portfolio's  net
assets  in  securities  that  are  illiquid.   Illiquid  securities  are  those
securities  which  cannot be disposed of in the  ordinary  course of  business,
seven  days or less,  at  approximately  the value at which the  Portfolio  has
valued the securities.
    
                                      23
<PAGE>
                                   APPENDIX B

USAA Family of No-Load Mutual Funds

The USAA Family of No-Load Mutual Funds includes a variety of Funds,  each with
different objectives and policies. In combination,  these Funds are designed to
provide you with the opportunity to formulate your own investment program.  You
may  exchange  any shares you hold in any one USAA Fund for shares in any other
USAA Fund. For more complete  information  about other Funds in the USAA Family
of Funds,  including  charges and expenses,  call us for a Prospectus.  Read it
carefully before you invest or send money.

        FUND
      TYPE/NAME                             VOLATILITY
===============================================================
CAPITAL APPRECIATION
- ---------------------------------------------------------------
Aggressive Growth                        Very high
Emerging Markets (1)                     Very high
First Start Growth                       Moderate to high
Gold (1)                                 Very high
Growth                                   Moderate to high
Growth & Income                          Moderate
International (1)                        Moderate to high
S&P 500 Index (2)                        Moderate
Science & Technology                     Very high
World Growth (1)                         Moderate to high
- ---------------------------------------------------------------
ASSET ALLOCATION
- ---------------------------------------------------------------
Balanced Strategy (1)                    Moderate
Cornerstone Strategy (1)                 Moderate
Growth and Tax Strategy                  Moderate
Growth Strategy (1)                      Moderate to high
Income Strategy                          Low to moderate
- ---------------------------------------------------------------
INCOME - TAXABLE
- ---------------------------------------------------------------
GNMA                                     Low to moderate
Income                                   Moderate
Income Stock                             Moderate
Short-Term Bond                          Low
- ---------------------------------------------------------------
INCOME - TAX EXEMPT
- ---------------------------------------------------------------
Long-Term (3)                            Moderate
Intermediate-Term (3)                    Low to moderate
Short-Term (3)                           Low
State Bond/Income (3,4)                  Moderate
- ---------------------------------------------------------------
MONEY MARKET
- ---------------------------------------------------------------
Money Market (5)                         Very low
Tax Exempt Money Market (3,5)            Very low
Treasury Money Market Trust (5)          Very low
State Money Market (3,4,5)               Very low
===============================================================

1  FOREIGN   INVESTING  IS  SUBJECT  TO  ADDITIONAL  RISKS,  SUCH  AS  CURRENCY
   FLUCTUATIONS, MARKET ILLIQUIDITY, AND POLITICAL INSTABILITY.

2  S&P(R) IS A  TRADEMARK  OF THE  MCGRAW-HILL  COMPANIES,  INC.,  AND HAS BEEN
   LICENSED FOR USE. THE PRODUCT IS NOT SPONSORED, SOLD OR PROMOTED BY STANDARD
   & POOR'S,  AND  STANDARD  & POOR'S  MAKES NO  REPRESENTATION  REGARDING  THE
   ADVISABILITY OF INVESTING IN THE PRODUCT.

3  SOME INCOME MAY BE SUBJECT TO STATE OR LOCAL TAXES.

4  CALIFORNIA, FLORIDA, NEW YORK, TEXAS, AND VIRGINIA FUNDS ARE OFFERED ONLY TO
   RESIDENTS OF THOSE STATES.
   
5  AN  INVESTMENT  IN A MONEY MARKET FUND IS NOT INSURED OR  GUARANTEED  BY THE
   FDIC OR ANY OTHER GOVERNMENT AGENCY. 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.

                                      24
<PAGE>
If you would like more information about the Fund, you may call  1-800-531-8181
to request a free copy of the Fund's Statement of Additional Information (SAI),
Annual or Semiannual  Report, or to ask other questions about the Fund. The SAI
has been filed with the Securities and Exchange Commission (SEC) and is legally
a part  of the  Prospectus.  In the  Fund's  Annual  Report,  you  will  find a
discussion  of  the  market   conditions   and   investment   strategies   that
significantly affected the Fund's performance during the last fiscal year.

To view these documents,  along with other related documents, you can visit the
SEC's  Internet  web  site  (http://www.sec.gov)  or  the  Commission's  Public
Reference Room in Washington,  D.C.  Information on the operation of the public
reference room can be obtained by calling 1-800-SEC-0330.  Additionally, copies
of this  information  can be obtained,  for a  duplicating  fee, by writing the
Public Reference Section of the Commission, Washington, D.C. 20549-6009.
    
                INVESTMENT ADVISER, UNDERWRITER AND DISTRIBUTOR
                       USAA Investment Management Company
                            9800 Fredericksburg Road
                            San Antonio, Texas 78288
                -----------------------------------------------
             TRANSFER AGENT                           CUSTODIAN
    USAA Shareholder Account Services    State Street Bank and Trust Company
        9800 Fredericksburg Road                    P.O. Box 1713
       San Antonio, Texas 78288                Boston, Massachusetts 02105
                -----------------------------------------------
   
                           TELEPHONE ASSISTANCE HOURS
    
                         Call toll free - Central Time
                     Monday - Friday 8:00 a.m. to 8:00 p.m.
                        Saturdays 8:30 a.m. to 5:00 p.m.
               ------------------------------------------------
                   FOR ADDITIONAL INFORMATION ON MUTUAL FUNDS
                   1-800-531-8181, (in San Antonio) 456-7211
                For account servicing, exchanges or redemptions
                   1-800-531-8448, (in San Antonio) 456-7202
                -----------------------------------------------
                       RECORDED MUTUAL FUND PRICE QUOTES
                        24-Hour Service (from any phone)
                   1-800-531-8066, (in San Antonio) 498-8066
                -----------------------------------------------
   
                            MUTUAL FUND TOUCHLINE sm
    
                          (from Touchtone phones only)
              For account balance, last transaction or fund prices
                   1-800-531-8777, (in San Antonio) 498-8777
   
                   Investment Company Act File No. 811-2429
    
                                      25
<PAGE>

                                     Part B


                  Statement of Additional Information for the
   
                               S&P 500 Index Fund
    
                               is included herein

                 Not included in this Post-Effective Amendment
               is the Statement of Additional Information for the
   
           Aggressive Growth Fund, Growth Fund, Growth & Income Fund,
             Income Stock Fund, Income Fund, Short-Term Bond Fund,
               Money Market Fund, Science & Technology Fund, and
                            First Start Growth Fund
    
<PAGE>

USAA    USAA                                        STATEMENT OF
EAGLE   MUTUAL                                      ADDITIONAL INFORMATION
LOGO    FUND, INC.
   
                                                    May 1, 1999
    
- -------------------------------------------------------------------------------

                             USAA MUTUAL FUND, INC.
                               S&P 500 Index Fund

USAA MUTUAL  FUND,  INC.  (the  Company)  is a  registered  investment  company
offering shares of ten no-load mutual funds,  one of which is described in this
Statement of Additional  Information (SAI): the S&P 500 Index Fund. The Fund is
classified as diversified.
   
     The Fund's  investment  objective  seeks to match,  as closely as possible
(before the deduction of expenses), the performance of the S&P 500 Index, which
emphasizes stocks of large U.S. companies. As described in the Prospectus,  the
Company seeks to achieve the investment  objective of the Fund by investing all
the investable assets of the Fund in an open-end management  investment company
having the same investment objective as the Fund. The investment company is the
Equity 500 Index  Portfolio  (the  Portfolio)  advised by Bankers Trust Company
(Bankers Trust).
    
     Since the investment  characteristics of the Fund will correspond directly
to those of the  Portfolio  in which  the Fund  invests  all of its  investable
assets, the following  includes a discussion of the various  investments of and
techniques employed by the Portfolio.
   
     You may obtain a free copy of the  Prospectus  dated May 1, 1999,  for the
Fund by writing to USAA  Mutual  Fund,  Inc.,  9800  Fredericksburg  Road,  San
Antonio,  TX 78288,  or by calling  toll free  1-800-531-8181.  The  Prospectus
provides the basic  information  you should know before  investing in the Fund.
This SAI is not a Prospectus  and contains  information in addition to and more
detailed  than that set  forth in the  Fund's  Prospectus.  It is  intended  to
provide you with additional information regarding the activities and operations
of the Company and the Fund and should be read in  conjunction  with the Fund's
Prospectus.

     The  financial  statements  for the USAA S&P 500 Index Fund and the Equity
500 Index Portfolio,  and the Independent  Accountants' Reports thereon for the
fiscal year ended  December 31, 1998, are included in the  accompanying  Annual
Report to Shareholders of that date and are incorporated herein by reference.
    
                               TABLE OF CONTENTS

         Page
           2   Valuation of Securities
           2   Conditions of Purchase and Redemption
           2   Additional Information Regarding Redemption of Shares
           3   Investment Plans
           4   Investment Policies

   
           9   Investment Restrictions
          12   Portfolio Transactions and Brokerage Commissions
          13   Description of Shares
          14   Tax Considerations
          15   Directors and Officers of the Company
          18   Trustees and Officers of the Portfolio
          19   Investment Adviser
          20   Administrator
          21   General Information
          22   Calculation of Performance Data
          23   Appendix A - Comparison of Fund Performance
          25   Appendix B - Dollar-Cost Averaging
    

<PAGE>
                            VALUATION OF SECURITIES

Shares of the Fund are offered on a continuing, best-efforts basis through USAA
Investment  Management  Company (IMCO or the Manager).  The offering  price for
shares of the Fund is equal to the current net asset value (NAV) per share. The
NAV per  share of the Fund is  calculated  by adding  the  value of the  Fund's
assets (i.e.,  the value of its investments in the Portfolio and other assets),
deducting liabilities, and dividing by the number of shares outstanding.

     The Fund's NAV per share is calculated  each day,  Monday through  Friday,
except days on which the New York Stock Exchange (NYSE) is closed.  The NYSE is
currently  scheduled to be closed on New Year's Day,  Martin  Luther King,  Jr.
Day, Presidents' Day, Good Friday,  Memorial Day,  Independence Day, Labor Day,
Thanksgiving,  and Christmas,  and on the preceding Friday or subsequent Monday
when one of these holidays falls on a Saturday or Sunday, respectively.

     The Portfolio values its equity and debt securities (other than short-term
debt obligations maturing in 60 days or less),  including listed securities and
securities for which price  quotations  are  available,  on the basis of market
valuations furnished by a pricing service. Short-term debt obligations maturing
in 60 days or less are valued at  amortized  cost,  which  approximates  market
value.  Other assets are valued at fair value using methods  determined in good
faith by the Portfolio's Board of Trustees.
   
     Each investor in the  Portfolio,  including the Fund, may add to or reduce
its  investment in the Portfolio on each day that the NYSE is open for business
and New York charter banks are not closed owing to customary or local holidays.
As of the close of the NYSE,  currently  4:00 p.m.  (Eastern time or earlier if
the NYSE  closes  earlier)  on each  such  day,  the  value of each  investor's
interest in the Portfolio will be determined by multiplying the net asset value
of the Portfolio by the percentage  representing  that investor's  share of the
aggregate  beneficial  interests in the Portfolio.  Any additions or reductions
that are to be  effected  on that day will  then be  effected.  The  investor's
percentage of the aggregate  beneficial interests in the Portfolio will then be
recomputed as the  percentage  equal to the fraction (1) the numerator of which
is the value of such investor's  investment in the Portfolio as of the close of
the NYSE on such day plus or  minus,  as the  case may be,  the  amount  of net
additions  to or  reductions  in the  investor's  investment  in the  Portfolio
effected  on such day and (2) the  denominator  of which is the  aggregate  net
asset value of the  Portfolio  as of 4:00 p.m. or the close of the NYSE on such
day plus or  minus,  as the case may be,  the  amount  of net  additions  to or
reductions  in the aggregate  investments  in the Portfolio by all investors in
the Portfolio.  The percentage so determined  will then be applied to determine
the value of the  investor's  interest in the  Portfolio as of 4:00 p.m. or the
close of the NYSE on the following day the NYSE is open for trading.
    
                     CONDITIONS OF PURCHASE AND REDEMPTION

NONPAYMENT

If any order to purchase shares is canceled due to nonpayment or if the Company
does not receive good funds either by check or electronic funds transfer,  USAA
Shareholder  Account Services (Transfer Agent) will treat the cancellation as a
redemption of shares  purchased,  and you will be responsible for any resulting
loss  incurred  by the  Fund  or the  Manager.  If you are a  shareholder,  the
Transfer Agent can redeem shares from any of your  account(s) as  reimbursement
for all losses.  In addition,  you may be prohibited or restricted  from making
future  purchases in any of the USAA Family of Funds.  A $15 fee is charged for
all returned items, including checks and electronic funds transfers.

TRANSFER OF SHARES

You may transfer Fund shares to another person by sending written  instructions
to the Transfer  Agent.  The account must be clearly  identified,  and you must
include  the  number  of  shares  to be  transferred,  the  signatures  of  all
registered owners, and all stock certificates, if any, which are the subject of
transfer.  You also need to send written  instructions signed by all registered
owners and supporting documents to change an account registration due to events
such as divorce,  marriage, or death. If a new account needs to be established,
you may complete and return an application to the Transfer Agent.

             ADDITIONAL INFORMATION REGARDING REDEMPTION OF SHARES
   
The value of your investment at the time of redemption may be more or less than
the cost at  purchase,  depending  on the value of the  securities  held in the
Portfolio.  Requests for redemption that are subject to any special  conditions
or which  specify an  effective  date other than as provided  herein  cannot be
accepted.  A gain or loss  for tax  purposes  may be  realized  on the  sale of
shares, depending upon the price when redeemed.

                                       2
<PAGE>
     The  Portfolio  reserves  the right,  if  conditions  exist that make cash
payments  undesirable,  to honor any request for redemption or repurchase order
by making payment in whole or in part in readily  marketable  securities chosen
by the  Portfolio  and  valued  as  they  are for  purposes  of  computing  the
Portfolio's  NAV (a  redemption  in kind).  If  payment  is made to the Fund in
securities,  the  Fund may  incur  transaction  expenses  in  converting  these
securities  into cash.  The Portfolio has elected,  however,  to be governed by
Rule 18f-1 under the Investment Company Act of 1940, as amended (1940 Act) as a
result of which the Portfolio is obligated to redeem beneficial  interests with
respect to any one investor during any 90-day period,  solely in cash up to the
lesser of $250,000 or 1% of the NAV of the  Portfolio  at the  beginning of the
period.   For  purposes  of  determining   compliance  with  Rule  18f-1,  each
shareholder of the Fund  redeeming  shares of the Fund on a particular day will
be treated as a direct holder in the interest in the Portfolio  being  redeemed
that day.
    
     In the event the Company  withdraws or redeems all of the Fund's  interest
in the Portfolio, the Portfolio will effect such redemption in kind and in such
a manner that the securities  delivered to the Fund will mirror,  as closely as
practicable,  the  composition  of the  Portfolio  immediately  prior  to  such
redemption.

     The Board of  Directors  may cause the  redemption  of an  account  with a
balance  of less  than 10  shares  of the Fund  provided  (1) the  value of the
account has been  reduced,  for reasons  other than  market  action,  below the
minimum initial investment in such Fund at the time of the establishment of the
account,  (2) the account has remained  below the minimum level for six months,
and (3) 60 days' prior written notice of the proposed  redemption has been sent
to you.  Shares will be redeemed at the NAV on the date fixed for redemption by
the Board of Directors.  Prompt payment will be made by mail to your last known
address.

     The  Company  reserves  the right to suspend  the right of  redemption  or
postpone  the date of  payment  (1) for any  periods  during  which the NYSE is
closed,  (2) when  trading in the  markets  the  Company  normally  utilizes is
restricted, or an emergency exists as determined by the Securities and Exchange
Commission (SEC) so that disposal of the Company's investments or determination
of its NAV is not reasonably practicable,  or (3) for such other periods as the
SEC by order may permit for protection of the Company's shareholders.

     For the mutual  protection  of the investor and the Fund,  the Company may
require a signature  guarantee.  If  required,  EACH  signature  on the account
registration must be guaranteed.  Signature guarantees are acceptable from FDIC
member  banks,  brokers,  dealers,   municipal  securities  dealers,  municipal
securities  brokers,   government  securities  dealers,  government  securities
brokers,  credit unions,  national securities exchanges,  registered securities
associations,   clearing  agencies,  and  savings  associations.   A  signature
guarantee for active duty military  personnel  stationed abroad may be provided
by an officer of the United States Embassy or Consulate, a staff officer of the
Judge Advocate General, or an individual's commanding officer.

                                INVESTMENT PLANS

The Company makes available the following  investment  plans to shareholders of
the Fund.  At the time you sign up for any of the  following  investment  plans
that utilize the electronic funds transfer service,  you will choose the day of
the month (the  effective  date) on which you would like to regularly  purchase
shares.  When this day falls on a weekend or holiday,  the electronic  transfer
will take place on the last  business day before the  effective  date.  You may
terminate your participation in a plan at any time. Please call the Manager for
details and necessary forms or applications.

AUTOMATIC PURCHASE OF SHARES

INVESTRONIC(R) - The regular purchase of additional  shares through  electronic
funds transfer from a checking or savings account.  You may invest as little as
$50 per month.
   
DIRECT PURCHASE  SERVICE - The periodic  purchase of shares through  electronic
funds  transfer  from  a   non-governmental   employer,   an   income-producing
investment, or an account with a participating financial institution.

DIRECT DEPOSIT PROGRAM - The monthly  transfer of certain  federal  benefits to
directly  purchase  shares of a USAA mutual  fund.  Eligible  federal  benefits
include:  Social Security,  Supplemental Security Income, Veterans Compensation
and Pension,  Civil Service  Retirement  Annuity,  and Civil  Service  Survivor
Annuity.

GOVERNMENT  ALLOTMENT - The  transfer of  military  pay by the U.S.  Government
Finance Center for the purchase of USAA mutual fund shares.
    
                                       3
<PAGE>
AUTOMATIC  PURCHASE  PLAN - The  periodic  transfer  of funds from a USAA money
market fund to purchase  shares in another  non-money  market USAA mutual fund.
There is a minimum investment  required for this program of $5,000 in the money
market fund, with a monthly transaction minimum of $50.
   
BUY/SELL  SERVICE - The  intermittent  purchase or redemption of shares through
electronic  funds  transfer to or from a checking or savings  account.  You may
initiate a "buy" or "sell" whenever you choose.
    
DIRECTED  DIVIDENDS  - If you own  shares  in more than one of the Funds in the
USAA  Family of Funds,  you may  direct  that  dividends  and/or  capital  gain
distributions  earned in one fund be used to purchase shares  automatically  in
another fund.

     Participation in these automatic  purchase plans will permit you to engage
in dollar-cost averaging. For additional information concerning the benefits of
dollar-cost averaging, see APPENDIX B.

SYSTEMATIC WITHDRAWAL PLAN
   
If you own shares having a NAV of $5,000 or more in a single investment account
(accounts in different  Funds cannot be aggregated for this  purpose),  you may
request  that enough  shares to produce a fixed  amount of money be  liquidated
from the account monthly or quarterly. The amount of each withdrawal must be at
least $50. Using the electronic funds transfer service,  you may choose to have
withdrawals   electronically   deposited  at  your  bank  or  other   financial
institution. You may also elect to have checks mailed to a designated address.

     This plan may be initiated by depositing shares worth at least $5,000 with
the Transfer Agent and by completing a Systematic  Withdrawal Plan application,
which may be requested from the Manager. You may terminate participation in the
plan at any time.  You are not charged  for  withdrawals  under the  Systematic
Withdrawal  Plan. The Company will not bear any expenses in  administering  the
plan  beyond the  regular  transfer  agent and  custodian  costs of issuing and
redeeming   shares.   The  Manager  will  bear  any   additional   expenses  of
administering the plan.
    
     Withdrawals  will be made by redeeming full and  fractional  shares on the
date you select at the time the plan is established.  Withdrawal  payments made
under this plan may exceed  dividends  and  distributions  and, to this extent,
will  involve the use of  principal  and could  reduce the dollar value of your
investment  and  eventually  exhaust the  account.  Reinvesting  dividends  and
distributions  helps  replenish  the  account.  Because  share  values  and net
investment income can fluctuate, you should not expect withdrawals to be offset
by rising income or share value gains.

     Each  redemption  of shares  may  result in a gain or loss,  which must be
reported  on your  income tax  return.  Therefore,  you should keep an accurate
record of any gain or loss on each withdrawal.

TAX-DEFERRED RETIREMENT PLANS
   
Federal  taxes on current  income may be  deferred  if you  qualify for certain
types  of  retirement  programs.  For  your  convenience,  the  Manager  offers
403(b)(7)  accounts and various forms of IRAs. You may make  investments in one
or any  combination  of the Funds  described in the  Prospectus of each Fund of
USAA Mutual Fund, Inc. and USAA  Investment  Trust (not available in the Growth
and Tax Strategy Fund).
    
     Retirement plan applications for the IRA and 403(b)(7)  programs should be
sent directly to USAA Shareholder Account Services,  9800 Fredericksburg  Road,
San Antonio,  TX 78288. USAA Federal Savings Bank serves as Custodian for these
tax-deferred retirement plans under the programs made available by the Manager.
Applications  for  these  retirement  plans  received  by the  Manager  will be
forwarded to the Custodian for acceptance.

     An administrative  fee of $20 is deducted from the money sent to you after
closing an account.  Exceptions to the fee are:  partial  distributions,  total
transfer within USAA, and distributions due to disability or death. This charge
is  subject  to change as  provided  in the  various  agreements.  There may be
additional charges, as mutually agreed upon between you and the Custodian,  for
further services requested of the Custodian.

     Each employer or individual establishing a tax-deferred retirement plan is
advised to consult with a tax adviser  before  establishing  the plan.  You may
obtain detailed information about the plans from the Manager.

                              INVESTMENT POLICIES
   
The  investment  objective of the Fund is  described in the Fund's  Prospectus.
There can, of course, be no assurance that the Fund will achieve its investment
objective.  The Fund's investment objective is not a fundamental policy and may
be  changed   upon  notice  to,  but  without  the   approval  of,  the  Fund's
shareholders.  If there is a change in the  Fund's  investment  objective,  the
Fund's shareholders should

                                       4
<PAGE>
consider  whether the Fund remains an appropriate  investment in light of their
then-current  needs.  The  investment  objective of the Portfolio is also not a
fundamental  policy.  Shareholders  of the Funds will  receive  30 days'  prior
written  notice with respect to any change in the  investment  objective of the
Fund or the corresponding Portfolio.
    
     The Fund seeks to achieve its investment objective by investing all of its
investable  assets in the  Portfolio.  The  Company  may  withdraw  the  Fund's
investment  from the  Portfolio  at any time if the Board of  Directors  of the
Company determines that it is in the best interest of the Fund to do so.

     Since the investment  characteristics of the Fund will correspond directly
to those  of the  Portfolio,  the  following  is a  discussion  of the  various
investments of and techniques employed by the Portfolio.
   
     EQUITY SECURITIES. The Portfolio may invest in equity securities listed on
any domestic or foreign securities  exchange or traded in the  over-the-counter
market as well as certain  restricted or unlisted  securities.  As used herein,
"equity  securities"  are defined as common stock,  preferred  stock,  trust or
limited partnership interests,  rights and warrants to subscribe to or purchase
such  securities,  sponsored or unsponsored  ADRs,  EDRs, GDRs, and convertible
securities,  consisting  of debt  securities  or  preferred  stock  that may be
converted  into common stock or that carry the right to purchase  common stock.
Common stocks, the most familiar type, represent an equity (ownership) interest
in a  corporation.  They may or may not pay  dividends or carry voting  rights.
Common  stock  occupies  the  most  junior  position  in  a  company's  capital
structure.  Although equity  securities  have a history of long-term  growth in
value,  their  prices  fluctuate  based on  changes  in a  company's  financial
condition and on overall market and economic conditions.  Smaller companies are
especially sensitive to these factors.

     SHORT-TERM INSTRUMENTS.  When the Portfolio experiences large cash inflows
through  the sale of  securities  and  desirable  equity  securities,  that are
consistent with the Portfolio's investment objective,  which are unavailable in
sufficient   quantities  or  at  attractive  prices,  the  Portfolio  may  hold
short-term  investments  (or shares of money market mutual funds) for a limited
time pending  availability of such equity  securities.  Short-term  instruments
consist of foreign  and  domestic:  (i)  short-term  obligations  of  sovereign
governments,  their  agencies,  instrumentalities,   authorities  or  political
subdivisions;  (ii)  other  short-term  debt  securities  rated AA or higher by
("S&P") or Aa or higher by Moody's Investors Service,  Inc.  ("Moody's") or, if
unrated,  of  comparable  quality  in  the  opinion  of  Bankers  Trust;  (iii)
commercial paper; (iv) bank obligations,  including negotiable  certificates of
deposit, time deposits and banker's acceptances; and (v) repurchase agreements.
At the time the Portfolio  invests in commercial  paper,  bank  obligations  or
repurchase agreements,  the issuer of the issuer's parent must have outstanding
debt  rated AA or  higher  by S&P or Aa or higher  by  Moody's  or  outstanding
commercial  paper or bank  obligations  rated A-1 by S&P or Prime-1 by Moody's;
or, if no such ratings are  available,  the  instrument  must be of  comparable
quality in the opinion of Bankers Trust.

     CERTIFICATES OF DEPOSIT AND BANKERS' ACCEPTANCES.  Certificates of deposit
are receipts issued by a depository  institution in exchange for the deposit of
funds.  The issuer  agrees to pay the amount  deposited  plus  interest  to the
bearer of the receipt on the date specified on the certificate. The certificate
usually  can be traded in the  secondary  market  prior to  maturity.  Bankers'
acceptances  typically arise from short-term  credit  arrangements  designed to
enable  businesses  to  obtain  funds  to  finance   commercial   transactions.
Generally,  an  acceptance is a time draft drawn on a bank by an exporter or an
importer to obtain a stated  amount of funds to pay for  specific  merchandise.
The  draft  is then  "accepted"  by a bank  that,  in  effect,  unconditionally
guarantees to pay the face value of the  instrument on its maturity  date.  The
acceptance may then be held by the accepting bank as an earning asset or it may
be sold in the  secondary  market at the going rate of discount  for a specific
maturity.  Although maturities for acceptances can be as long as 270 days, most
acceptances have maturities of six months or less.

     COMMERCIAL PAPER.  Commercial paper consists of short-term (usually from 1
to 270 days)  unsecured  promissory  notes issued by  corporations  in order to
finance their current  operations.  A variable amount master demand note (which
is a type of  commercial  paper)  represents  a  direct  borrowing  arrangement
involving  periodically  fluctuating rates of interest under a letter agreement
between a commercial paper issuer and an institutional lender pursuant to which
the lender may determine to invest varying amounts.

     ILLIQUID  SECURITIES.  Historically,  illiquid  securities  have  included
securities  subject to contractual or legal restrictions on resale because they
have not been registered under the Securities Act of 1933, as amended (the 1933
Act),  securities  that are otherwise  not readily  marketable  and  repurchase
agreements  having a maturity of longer than seven days.  Securities  that have
not been registered under the 1933 Act are referred to as private placements or
restricted  securities  and are  purchased  directly  from the issuer or

                                       5
<PAGE>
in the  secondary  market.  Mutual funds do not  typically  hold a  significant
amount  of  these  restricted  or  other  illiquid  securities  because  of the
potential for delays on resale and  uncertainty  in valuation.  Limitations  on
resale may have an adverse effect on the marketability of portfolio  securities
and a mutual fund might be unable to dispose of  restricted  or other  illiquid
securities  promptly  or at  reasonable  prices  and might  thereby  experience
difficulty  satisfying  redemptions within seven days. A mutual fund might also
have to  register  such  restricted  securities  in  order to  dispose  of them
resulting in additional  expense and delay.  Adverse  market  conditions  could
impede such a public offering of securities.

     A large institutional market has developed for certain securities that are
not registered under the 1933 Act, including repurchase agreements,  commercial
paper, foreign securities, municipal securities, and corporate bonds and notes.
Institutional  investors depend on an efficient  institutional  market in which
the  unregistered  security can be readily resold or on an issuer's  ability to
honor a demand  for  repayment.  The fact that there are  contractual  or legal
restrictions on resale of such  investments to the general public or to certain
institutions may not be indicative of their liquidity.

     The Securities and Exchange  Commission (the "SEC") has adopted Rule 144A,
which allows a broader  institutional  trading market for securities  otherwise
subject  to  restriction  on their  resale  to the  general  public.  Rule 144A
establishes a "safe harbor" from the registration  requirements of the 1933 Act
of resales of certain  securities to qualified  institutional  buyers.  Bankers
Trust  anticipates  that the market for certain  restricted  securities such as
institutional  commercial  paper  will  expand  further  as a  result  of  this
regulation and the development of automated systems for the trading,  clearance
and settlement of unregistered securities of domestic and foreign issuers, such
as the PORTAL  System  sponsored  by the  National  Association  of  Securities
Dealers, Inc.

     Rule 144A  Securities  are  securities  in the United  States that are not
registered  for sale under federal  securities  laws but which can be resold to
institutions  under SEC Rule  144A.  Provided  that a dealer  or  institutional
trading  market in such  securities  exists,  these  restricted  securities are
treated  as  exempt  from  the 15%  limit on  illiquid  securities.  Under  the
supervision  of  the  Board  of  Trustees  of  the  Portfolios,  Bankers  Trust
determines the liquidity of restricted  securities  and,  through  reports from
Bankers  Trust,   the  Board  will  monitor  trading   activity  in  restricted
securities.  If institutional trading in restricted securities were to decline,
the liquidity of the Portfolio could be adversely affected.

     In reaching liquidity decisions,  Bankers Trust will consider, among other
things, the following  factors:  (1) the frequency of trades and quotes for the
security;  (2) the number of dealers and other potential  purchasers wishing to
purchase or sell the security;  (3) dealer undertakings to make a market in the
security  and (4) the  nature of the  security  and of the  marketplace  trades
(e.g.,  the time needed to dispose of the  security,  the method of  soliciting
offers and the mechanics of the transfer).

     WHEN-ISSUED AND DELAYED  DELIVERY  SECURITIES.  The Portfolio may purchase
securities on a when-issued or delayed delivery basis.  Delivery of and payment
for  these  securities  can take  place a month or more  after  the date of the
purchase commitment.  The purchase price and the interest rate payable, if any,
on the securities are fixed on the purchase  commitment date or at the time the
settlement  date is fixed.  The value of such  securities  is subject to market
fluctuation  and no interest  accrues to the Portfolio until  settlement  takes
place. At the time the Portfolio makes the commitment to purchase securities on
a  when-issued  or delayed  delivery  basis,  it will  record the  transaction,
reflect  the value each day of such  securities  in  determining  its net asset
value and, if  applicable,  calculate  the maturity for the purposes of average
maturity from that date.  At the time of settlement a when-issued  security may
be valued at less than the purchase price. To facilitate such acquisitions, the
Portfolio  identifies,   as  part  of  a  segregated  account  cash  or  liquid
securities, in an amount at least equal to such commitments.  On delivery dates
for such transactions,  the Portfolio will meet its obligations from maturities
or sales of the  securities  held in the  segregated  account  and/or from cash
flow. If the Portfolio chooses to dispose of the right to acquire a when-issued
security prior to its  acquisition,  it could,  as with the  disposition of any
other portfolio obligation,  incur a gain or loss due to market fluctuation. It
is  the  current  policy  of  the  Portfolio  not  to  enter  into  when-issued
commitments  exceeding  in  the  aggregate  15%  of  the  market  value  of the
Portfolio's total assets,  less liabilities other than the obligations  created
by when-issued commitments.

     LENDING OF PORTFOLIO  SECURITIES.  The Portfolio has the authority to lend
up to 30% of the total value of its portfolio  securities  to brokers,  dealers
and other financial organizations. By lending its securities, the Portfolio may
increase its income by continuing  to receive  payments in respect of dividends
and interest on the loaned  securities as well as by either  investing the cash
collateral  in short-term  securities  or obtaining  yield in the form of a fee
paid by the borrower  when  irrevocable  letters of credit and U.S.  Government
obligations are used as collateral.  The Portfolio will adhere to the following
conditions whenever its

                                       6
<PAGE>
securities are loaned:  (1) the Portfolio must receive at least 100% collateral
from the borrower;  (2) the borrower must increase this collateral whenever the
market value of the securities including accrued interest rises above the level
of the collateral;  (3) the Portfolio must be able to terminate the loan at any
time; (4) the Portfolio must  substitute  payments in respect of all dividends,
interest or other distributions on loaned securities;  and (5) voting rights on
the loaned securities may pass to the borrower;  provided,  however,  that if a
material event adversely affecting the investment occurs, the Portfolio's Board
of  Trustees  must  terminate  the  loan  and  regain  the  right  to vote  the
securities.  Cash  collateral may be invested in a money market fund managed by
Bankers  Trust  (or  its  affiliates)  and  Bankers  Trust  may  serve  as  the
Portfolio's  lending agent and may share in revenue  received  from  securities
lending transactions as compensation for this service.

      REPURCHASE  AGREEMENTS.  In a repurchase agreement,  the Portfolio buys a
security  at one  price and  simultaneously  agrees to sell it back at a higher
price at a future date. In the event of the  bankruptcy of the other party to a
repurchase  agreement,  the  Portfolio  could  experience  delays in recovering
either its cash or selling securities subject to the repurchase  agreement.  To
the extent that, in the meantime,  the value of the securities  repurchased had
decreased or the value of the  securities had  increased,  the Portfolio  could
experience a loss. In all cases,  Bankers Trust must find the  creditworthiness
of the other party to the transaction satisfactory.

INDEX FUTURES CONTRACTS AND OPTIONS ON INDEX FUTURES CONTRACTS

     FUTURES  CONTRACTS.  Futures contracts are contracts to purchase or sell a
fixed amount of an underlying instrument,  commodity,  or index at a fixed time
and place in the future. U.S. futures contracts have been designed by exchanges
which have been designated "contracts markets" by the Commodity Futures Trading
Commission  ("CFTC"),  and  must  be  executed  through  a  futures  commission
merchant, or brokerage firm, which is a member of the relevant contract market.
Futures  contracts  trade on a number  of  exchanges  and clear  through  their
clearing corporations.  The Portfolio may enter into contracts for the purchase
or sale for future delivery of the Index.

     At the same time a futures  contract  on the Index is  entered  into,  the
Portfolio  must  allocate  cash or  securities  as a deposit  payment  (initial
margin).  Initial margin deposits are set by exchanges and may range between 1%
and 10% of a contract's face value.  Daily thereafter,  the futures contract is
valued and the payment of  "variation  margin" may be required,  since each day
the  Portfolio  would  provide or receive  cash that  reflects  any  decline or
increase in the contract's value.

     Although futures contracts (other than those that settle in cash) by their
terms call for the actual delivery or acquisition of the instrument  underlying
the contract,  in most cases the contractual  obligation is fulfilled by offset
before the date of the contract  without having to make or take delivery of the
instrument underlying the contract.  The offsetting of a contractual obligation
is accomplished by entering into an opposite  position in the identical futures
contract on a  commodities  exchange on which the futures  contract was entered
into (or a linked  exchange).  Such a transaction,  which is effected through a
member of an exchange,  cancels the  obligation to make or take delivery of the
instrument  underlying  the  contract.  Since all  transactions  in the futures
market are made,  offset or fulfilled  through a clearinghouse  associated with
the  exchange on which the  contracts  are  traded,  the  Portfolio  will incur
brokerage fees when it purchases or sells futures contracts.

     The ordinary spreads between prices in the cash and futures market, due to
differences in the nature of those markets, are subject to distortions.  First,
all  participants  in the  futures  market are  subject to initial  deposit and
variation margin requirements.  Rather than meeting additional variation margin
requirements,   investors  may  close  futures  contracts  through   offsetting
transactions which could distort the normal  relationship  between the cash and
futures  markets.  Second,  the liquidity of the futures market depends on most
participants'  entering  into  offsetting  transactions  rather  than making or
taking delivery.  To the extent that many  participants  decide to make or take
delivery,  liquidity  in the futures  market could be reduced,  thus  producing
distortion.  Third,  from the point of view of speculators,  the margin deposit
requirements in the futures market are less onerous than margin requirements in
the securities market. Therefore, increased participation by speculators in the
futures market may cause temporary price distortions. Due to the possibility of
distortion,  a correct forecast of securities price trends by Bankers Trust may
still not result in a successful transaction.

     In addition,  futures  contracts  entail  risks.  Although  Bankers  Trust
believes  that  use  of  such  contracts  will  benefit  the  Portfolio,  these
investments  in futures may cause the Portfolio to realize gains and losses for
tax  purposes  that would not  otherwise be realized if the  Portfolio  were to
invest  directly in the underlying  securities.  As a result,  this  investment
technique may  accelerate  the timing of receipt of taxable  distributions.

                                       7
<PAGE>

     OPTIONS ON INDEX FUTURES  CONTRACTS.  The Portfolio may purchase and write
options on futures  contracts with respect to the Index. The purchase of a call
option on an index futures contract is similar in some respects to the purchase
of a call option on such an index. For example, when the Portfolio is not fully
invested it may  purchase a call option on an index  futures  contract to hedge
against a market advance.

     The writing of a call  option on a futures  contract  with  respect to the
Index may constitute a partial hedge against declining prices of the underlying
securities which are deliverable upon exercise of the futures contract.  If the
futures  price at  expiration  of the option is below the exercise  price,  the
Portfolio  will retain the full amount of the option  premium which  provides a
partial  hedge  against any decline that may have  occurred in the  Portfolio's
holdings.  The  writing  of a put  option  on an  index  futures  contract  may
constitute  a  partial  hedge  against  increasing  prices  of  the  underlying
securities which are deliverable upon exercise of the futures contract.  If the
futures price at  expiration  of the option is higher than the exercise  price,
the Portfolio  will retain the full amount of the option premium which provides
a partial  hedge  against  any  increase in the price of  securities  which the
Portfolio  intends  to  purchase.  If a put or call  option the  Portfolio  has
written is exercised,  the Portfolio will incur a loss which will be reduced by
the amount of the premium it receives.  Depending on the degree of  correlation
between  changes in the value of its  portfolio  securities  and changes in the
value of its futures positions, the Portfolio's losses from existing options on
futures may to some extent be reduced or  increased  by changes in the value of
portfolio securities.
    
     The  purchase of a put option on a futures  contract  with  respect to the
Index is similar in some respects to the purchase of protective put options the
Index. For example, the Portfolio may purchase a put option on an index futures
contract to hedge against the risk lowering securities values.

     The amount of risk the Portfolio  assumes when it purchases an option on a
futures  contract  with respect to the Index is the premium paid for the option
plus related  transaction costs. In addition to the correlation risks discussed
above, the purchase of such an option also entails the risk that changes in the
value of the  underlying  futures  contract will not be fully  reflected in the
value of the option purchased.
   
     The Portfolio's  Board of Trustees has adopted the requirement  that index
futures  contracts and options on index futures contracts be used only for cash
management purposes. The Portfolio will not enter into any futures contracts or
options on futures  contracts if  immediately  thereafter  the amount of margin
deposits on all the futures  contracts of the  Portfolio  and premiums  paid on
outstanding options on futures contracts owned by the Portfolio would exceed 5%
of the  Portfolio's  net asset  value,  after  taking into  account  unrealized
profits and unrealized losses on any such contracts.

     OPTIONS ON SECURITIES INDEXES. The Portfolio may write (sell) covered call
and put  options to a limited  extent on the Index  ("covered  options")  in an
attempt to increase income. Such options give the holder the right to receive a
cash settlement during the term of the option based upon the difference between
the  exercise  price and the value of the index.  The  Portfolio  may forgo the
benefits of  appreciation on the Index or may pay more than the market price of
the Index pursuant to call and put options written by the Portfolio.
    
     By writing a covered call option, the Portfolio  forgoes,  in exchange for
the premium less the  commission  ("net  premium"),  the  opportunity to profit
during the option  period  from an  increase  in the market  value of the Index
above the exercise  price. By writing a covered put option,  the Portfolio,  in
exchange  for the net  premium  received,  accepts the risk of a decline in the
market value of the Index below the exercise price.

     The Portfolio may terminate its  obligation as the writer of a call or put
option by purchasing an option with the same exercise price and expiration date
as the option previously written.

     When the  Portfolio  writes an option,  an amount equal to the net premium
received  by  the  Portfolio  is  included  in  the  liability  section  of the
Portfolio's  Statement  of Assets and  Liabilities  as a deferred  credit.  The
amount of the deferred credit will be subsequently  marked to market to reflect
the current market value of the option  written.  The current market value of a
traded  option is the last sale price or, in the  absence  of a sale,  the mean
between the closing bid and asked price. If an option expires on its stipulated
expiration date or if the Portfolio enters into a closing purchase transaction,
the  Portfolio  will realize a gain (or loss if the cost of a closing  purchase
transaction  exceeds the premium  received  when the option was sold),  and the
deferred credit related to such option will be eliminated.  If a call option is
exercised,  the  Portfolio  will  realize  a gain or loss  from the sale of the
underlying  security  and the  proceeds  of the sale will be  increased  by the
premium originally received.  The writing of covered call options may be deemed
to  involve  the  pledge of the  securities  against  which the option is being
written.  Securities  against which call options are written will be segregated
on the books of the custodian for the Portfolio.

     The  Portfolio  may  purchase  call  and put  options  on the  Index.  The
Portfolio would normally  purchase a call option in anticipation of an increase
in the market value of the Index.  The purchase of a call option

                                       8
<PAGE>
would entitle the Portfolio,  in exchange for the premium paid, to purchase the
underlying  securities  at a  specified  price  during the option  period.  The
Portfolio would ordinarily have a gain if the value of the securities increased
above the  exercise  price  sufficiently  to cover the premium and would have a
loss if the value of the  securities  remained at or below the  exercise  price
during the option period.

     The Portfolio  would normally  purchase put options in  anticipation  of a
decline in the market value of the Index  (protective  puts). The purchase of a
put option would  entitle the  Portfolio,  in exchange for the premium paid, to
sell, the underlying  securities at a specified price during the option period.
The purchase of protective puts is designed merely to offset or hedge against a
decline  in the market  value of the  Index.  The  Portfolio  would  ordinarily
recognize a gain if the value of the Index  decreased  below the exercise price
sufficiently  to cover the premium  and would  recognize a loss if the value of
the Index  remained  at or above the  exercise  price.  Gains and losses on the
purchase of protective  put options  would tend to be offset by  countervailing
changes in the value of the Index.
   
     The Portfolio has adopted certain other nonfundamental policies concerning
index option transactions which are discussed below. The Portfolio's activities
in index options may also be restricted by the  requirements  of the Code,  for
qualification as a regulated investment company.
    
     The hours of trading for options on the Index may not conform to the hours
during  which the  underlying  securities  are  traded.  To the extent that the
option  markets  close  before  the  markets  for  the  underlying  securities,
significant  price  and  rate  movements  can  take  place  in  the  underlying
securities  markets  that  cannot be  reflected  in the option  markets.  It is
impossible to predict the volume of trading that may exist in such options, and
there  can be no  assurance  that  viable  exchange  markets  will  develop  or
continue.

     Because options on securities  indices require settlement in cash, Bankers
Trust  may be forced  to  liquidate  portfolio  securities  to meet  settlement
obligations.
   
     ASSET COVERAGE.  To assure that the Portfolio's use of futures and related
options, as well as when-issued and delayed-delivery  securities,  are not used
to achieve investment leverage, the Portfolio will cover such transactions,  as
required  under  applicable  interpretations  of the SEC,  either by owning the
underlying  securities  or by  segregating  with the  Portfolio's  Custodian or
futures  commission  merchant liquid securities in an amount at all times equal
to or exceeding the Portfolio's commitment with respect to these instruments or
contracts.
    
                            INVESTMENT RESTRICTIONS

Certain investment restrictions of the Fund and the Portfolio have been adopted
as  fundamental  policies  of the  Fund or  Portfolio,  as the  case  may be. A
fundamental policy may not be changed without the approval of a majority of the
outstanding  voting  securities of the Fund or  Portfolio,  as the case may be.
Majority of the outstanding  voting  securities under the 1940 Act, and as used
in this SAI and the  Prospectus,  means,  the  lesser of (1) 67% or more of the
outstanding  voting  securities of the Fund or  Portfolio,  as the case may be,
present at a meeting, if the holders of more than 50% of the outstanding voting
securities  of the  Fund or  Portfolio,  as the  case may be,  are  present  or
represented by proxy or (2) more than 50% of the outstanding  voting securities
of the Fund or Portfolio, as the case may be. Whenever the Company is requested
to vote on a  fundamental  policy of the  Portfolio,  the  Company  will hold a
meeting of the Fund's  shareholders and will cast its vote as instructed by the
Fund's  shareholders.  The percentage of the Company's votes  representing Fund
shareholders  not voting will be voted by the  Directors  of the Company in the
same proportion as the Fund shareholders who do, in fact, vote.

As a matter of fundamental  policy, the Fund may not (except that no investment
restriction  of the Fund  shall  prevent  the Fund  from  investing  all of its
investable assets in an open-end investment company with substantially the same
investment objective):

  (1) with respect to 75% of its total assets,  purchase the  securities of any
      issuer (except U.S. Government Securities, as such term is defined in the
      1940 Act) if, as a result,  it would own more than 10% of the outstanding
      voting  securities  of such  issuer or it would  have more than 5% of the
      value of its total assets invested in the securities of such issuer;

  (2) borrow money, except for temporary or emergency purposes in an amount not
      exceeding 33 1/3% of its total  assets  (including  the amount  borrowed)
      less liabilities (other than borrowings);

  (3) concentrate its investments in any one industry although it may invest up
      to 25% of the value of its total  assets in any one  industry;  provided,
      this limitation does not apply to securities  issued or guaranteed by the
      U.S. Government or its corporate instrumentalities;

                                       9
<PAGE>
  (4) issue senior securities, except as permitted under the 1940 Act;

  (5) underwrite securities of other issuers,  except to the extent that it may
      be deemed to act as a statutory  underwriter in the  distribution  of any
      restricted securities or not readily marketable securities;

  (6) lend any  securities or make any loan if, as a result,  more than 33 1/3%
      of its total  assets  would be lent to other  parties,  except  that this
      limitation  does  not  apply  to  purchases  of  debt  securities  or  to
      repurchase agreements;

  (7) purchase  or sell  commodities,  except  that  the  Fund  may  invest  in
      financial futures contracts,  options thereon,  and similar  instruments;
      and

  (8) purchase or sell real estate unless  acquired as a result of ownership of
      securities  or other  instruments,  except  that the Fund may  invest  in
      securities  or other  instruments  backed by real estate or securities of
      companies  that deal in real  estate or are  engaged  in the real  estate
      business.

As a matter of fundamental policy, the Portfolio may not:

  (1) borrow money or mortgage or hypothecate  assets of the Portfolio,  except
      that  in an  amount  not  to  exceed  1/3  of the  current  value  of the
      Portfolio's  assets,  it may  borrow  money as a  temporary  measure  for
      extraordinary  or emergency  purposes  and enter into reverse  repurchase
      agreements  or dollar roll  transactions,  and except that it may pledge,
      mortgage or  hypothecate  not more than 1/3 of such assets to secure such
      borrowings  (it is intended  that money would be borrowed only from banks
      and only either to accommodate  requests for the withdrawal of beneficial
      interests  (redemption of shares) while effecting an orderly  liquidation
      of  portfolio  securities  or to  maintain  liquidity  in the event of an
      unanticipated  failure to complete a portfolio  security  transaction  or
      other similar situations) or reverse repurchase agreements, provided that
      collateral  arrangements  with respect to options and futures,  including
      deposits of initial  deposit and variation  margin,  are not considered a
      pledge of assets for purposes of this  restriction and except that assets
      may be pledged  to secure  letters  of credit  solely for the  purpose of
      participating in a captive  insurance company sponsored by the Investment
      Company Institute;  for additional related  restrictions,  see clause (1)
      under the  caption  "Additional  Restrictions"  below.  (As an  operating
      policy, the Portfolio may not engage in dollar roll transactions);

  (2) underwrite  securities  issued by other  persons  except  insofar  as the
      Portfolio may technically be deemed an underwriter  under the 1933 Act in
      selling a portfolio security;

  (3) make  loans to other  persons  except:  (a)  through  the  lending of the
      Portfolio's  portfolio  securities  and provided  that any such loans not
      exceed 30% of the  Portfolio's  net assets (taken at market  value);  (b)
      through the use of  repurchase  agreements  or the purchase of short-term
      obligations;  or  (c)  by  purchasing  a  portion  of an  issue  of  debt
      securities of types distributed publicly or privately;

  (4) purchase or sell real estate (including limited partnership interests but
      excluding  securities  secured  by real  estate  or  interests  therein),
      interests  in  oil,  gas or  mineral  leases,  commodities  or  commodity
      contracts (except futures and option contracts) in the ordinary course of
      business   (except  that  the  Portfolio  may  hold  and  sell,  for  the
      Portfolio's   portfolio,   real  estate  acquired  as  a  result  of  the
      Portfolio's ownership of securities);
   
  (5) concentrate  its investments in any particular  industry  (excluding U.S.
      Government  securities),   but  if  it  is  deemed  appropriate  for  the
      achievement of the  Portfolio's  investment  objective,  up to 25% of its
      total assets may be invested in any one industry; and
    
  (6) issue any  senior  security  (as that term is defined in the 1940 Act) if
      such issuance is specifically prohibited by the 1940 Act or the rules and
      regulations promulgated thereunder, provided that collateral arrangements
      with  respect to  options  and  futures,  including  deposits  of initial
      deposit and variation margin,  are not considered to be the issuance of a
      senior security for purposes of this restriction.
   
 (7)  with respect to 75% of the Fund's (Portfolio's) total assets, invest more
      than  5% of  its  total  assets  in the  securities  of  any  one  issuer
      (excluding cash and cash-equivalents,  U.S. government securities and the
      securities  of other  investments  companies) or own more than 10% of the
      voting securities of any issuer.
    
      ADDITIONAL  RESTRICTIONS.  In order to comply with  certain  statutes and
policies,  the Fund and the Portfolio will not as a matter of operating  policy
(except that no operating  policy shall prevent the Fund from  investing all of
its investable assets in an open-end  investment company with substantially the
same investment objective):

  (1) borrow money (including through dollar roll transactions) for any purpose
      in excess  of 10% of the  Fund's  (Portfolio's)  total  assets  (taken at
      cost),  except  that the Fund  (Portfolio)  may borrow for  temporary  or
      emergency purposes up to 1/3 of its total assets;

                                      10
<PAGE>
  (2) pledge,  mortgage, or hypothecate for any purpose in excess of 10% of the
      Fund's (Portfolio's) total assets (taken at market value),  provided that
      collateral  arrangements  with respect to options and futures,  including
      deposits of initial deposit and variation margin,  and reverse repurchase
      agreements  are not  considered  a pledge of assets for  purposes of this
      restriction;

  (3) purchase any security or evidence of interest  therein on margin,  except
      that such  short-term  credit as may be  necessary  for the  clearance of
      purchases  and  sales of  securities  may be  obtained  and  except  that
      deposits  of  initial  deposit  and  variation  margin  may  be  made  in
      connection with the purchase, ownership, holding or sale of futures;

  (4) sell any security which it does not own unless by virtue of its ownership
      of  other  securities  it has at the  time  of  sale a  right  to  obtain
      securities, without payment of further consideration,  equivalent in kind
      and  amount to the  securities  sold and  provided  that if such right is
      conditional the sale is made upon the same conditions;

  (5) invest for the purpose of exercising control or management;

  (6) purchase  securities issued by any investment  company except by purchase
      in the open market where no  commission  or profit to a sponsor or dealer
      results from such purchase other than the customary broker's  commission,
      or except when such purchase, though not made in the open market, is part
      of a plan of merger or consolidation;  provided, however, that securities
      of any investment  company will not be purchased for the Fund (Portfolio)
      if such  purchase at the time thereof  would cause:  (a) more than 10% of
      the Fund's  (Portfolio's)  total assets  (taken at the greater of cost or
      market value) to be invested in the securities of such issuers;  (b) more
      than 5% of the Fund's (Portfolio's) total assets (taken at the greater of
      cost or market value) to be invested in any one  investment  company;  or
      (c) more than 3% of the outstanding  voting securities of any such issuer
      to be held for the Fund (Portfolio); and provided further that, except in
      the case of  merger  or  consolidation,  the Fund  (Portfolio)  shall not
      invest  in  any  other  open-end   investment  company  unless  the  Fund
      (Portfolio),  (i)  waives the  investment  advisory  fee with  respect to
      assets invested in other open-end investment companies and (ii) incurs no
      sales charge in connection  with the investment (as an operating  policy,
      the Portfolio will not invest in another open-end  registered  investment
      company);

  (7) invest more than 15% of the Fund's (Portfolio's) net assets (taken at the
      greater of cost or market value) in  securities  that are illiquid or not
      readily  marketable not including (a) Rule 144A securities that have been
      determined  to be  liquid  by the  Board of  Directors/Trustees;  and (b)
      commercial  paper that is sold under  section 4(2) of the 1933 Act which:
      (i) is not traded  flat or in default as to interest  or  principal;  and
      (ii) is  rated  in one of the two  highest  categories  by at  least  two
      nationally recognized  statistical rating organizations  (NRSROs) and the
      Fund's  (Portfolio's)  Board of  Directors/Trustees  have  determined the
      commercial  paper  to be  liquid;  or  (iii)  is  rated in one of the two
      highest  categories  by one NRSRO and the Fund's  (Portfolio's)  Board of
      Directors/Trustees   have  determined   that  the  commercial   paper  is
      equivalent quality and is liquid;
   
  (8) make short sales of  securities or maintain a short  position,  unless at
      all times when a short  position is open it owns an equal  amount of such
      securities  or  securities  convertible  into  or  exchangeable,  without
      payment of any further  consideration,  for  securities of the same issue
      and equal in amount to, the  securities  sold short,  and unless not more
      than 10% of the Fund's  (Portfolio's)  net assets (taken at market value)
      is  represented by such  securities,  or securities  convertible  into or
      exchangeable for such  securities,  at any one time (the Fund [Portfolio]
      has no current intention to engage in short selling);

  (9) write  puts  and  calls  on  securities  unless  each  of  the  following
      conditions are met: (a) the security underlying the put or call is within
      the investment  policies of the Fund (Portfolio) and the option is issued
      by the  Options  Clearing  Corporation,  except for put and call  options
      issued  by  non-U.S.  entities  or  listed  on  non-U.S.   securities  or
      commodities  exchanges;  (b)  the  aggregate  value  of  the  obligations
      underlying the puts  determined as of the date the options are sold shall
      not exceed 5% of the Fund's  (Portfolio's) net assets; (c) the securities
      subject to the exercise of the call written by the Fund  (Portfolio) must
      be owned by the  Fund  (Portfolio)  at the time the call is sold and must
      continue  to be  owned by the Fund  (Portfolio)  until  the call has been
      exercised,  has lapsed,  or the Fund  (Portfolio) has purchased a closing
      call, and such purchase has been  confirmed,  thereby  extinguishing  the
      Fund's  (Portfolio's)  obligation to deliver  securities  pursuant to the
      call  it has  sold;  and  (d) at the  time  a put is  written,  the  Fund
      (Portfolio)   establishes   a  segregated   account  with  its  custodian
      consisting  of cash or short-term  U.S.  Government  securities  equal in
      value to the amount the Fund  (Portfolio)  will be  obligated to pay upon
      exercise of the put (this  account  must be  maintained  until the put is
      exercised,  has expired,  or the Fund (Portfolio) has purchased a closing
      put,  which is a put of the same series as the one  previously  written);
      and

                                      11
<PAGE>
 (10) buy and sell puts and calls on securities, stock index futures or options
      on stock index  futures,  or  financial  futures or options on  financial
      futures  unless such  options are written by other  persons  and: (a) the
      options or futures  are  offered  through  the  facilities  of a national
      securities  association  or  are  listed  on  a  national  securities  or
      commodities exchange,  except for put and call options issued by non-U.S.
      entities or listed on non-U.S.  securities or commodities exchanges;  (b)
      the  aggregate  premiums  paid on all such options  which are held at any
      time do not exceed 20% of the Fund's  (Portfolio's) total net assets; and
      (c) the aggregate margin deposits required on all such futures or options
      thereon  held at any time do not  exceed 5% of the  Fund's  (Portfolio's)
      total assets.

     There will be no  violation  of any  investment  restrictions  or policies
[except with respect to fundamental  investment restriction (2) of the Fund and
(1) of the Portfolio  above] if that  restriction  is complied with at the time
the  relevant  action is taken,  notwithstanding  a later  change in the market
value of an investment,  in net or total assets, or in the change of securities
rating of the investment, or any other later change.
    
                PORTFOLIO TRANSACTIONS AND BROKERAGE COMMISSIONS

Bankers Trust is responsible for decisions to buy and sell securities,  futures
contracts and options on such  securities  and futures for the  Portfolio,  the
selection  of  brokers,  dealers  and futures  commission  merchants  to effect
transactions   and  the   negotiation   of  brokerage   commissions,   if  any.
Broker-dealers  may receive  brokerage  commissions on portfolio  transactions,
including options, futures and options on futures transactions and the purchase
and sale of underlying  securities upon the exercise of options.  Orders may be
directed to any broker-dealer or futures commission merchant,  including to the
extent and in the manner  permitted by  applicable  law,  Bankers  Trust or its
subsidiaries or affiliates. Purchases and sales of certain portfolio securities
on behalf of the  Portfolio  are  frequently  placed by Bankers  Trust with the
issuer or a primary or secondary  market-maker  for these  securities  on a net
basis,  without any brokerage  commission being paid by the Portfolio.  Trading
does, however, involve transaction costs.  Transactions with dealers serving as
market-makers reflect the spread between the bid and asked prices.  Transaction
costs  may also  include  fees  paid to third  parties  for  information  as to
potential purchasers or sellers of securities. Purchases of underwritten issues
may be made which will include an underwriting fee paid to the underwriter.

     Bankers  Trust  seeks  to  evaluate  the  overall  reasonableness  of  the
brokerage commissions paid (to the extent applicable) in placing orders for the
purchase  and sale of  securities  for the  Portfolio  taking into account such
factors as price,  commission  (negotiable  in the case of national  securities
exchange  transactions),  if any,  size of order,  difficulty  of execution and
skill  required  of  the  executing   broker-dealer  through  familiarity  with
commissions  charged  on  comparable  transactions,  as  well  as by  comparing
commissions  paid by the  Portfolio  to  reported  commissions  paid by others.
Bankers  Trust  reviews on a routine  basis  commission  rates,  execution  and
settlement services performed, making internal and external comparisons.

     Bankers  Trust  is  authorized,  consistent  with  Section  28(e)  of  the
Securities   Exchange  Act  of  1934,  as  amended,   when  placing   portfolio
transactions for the Portfolio with a broker to pay a brokerage  commission (to
the  extent  applicable)  in excess of that  which  another  broker  might have
charged  for  effecting  the same  transaction  on  account  of the  receipt of
research,  market or statistical  information.  The term  "research,  market or
statistical  information"  includes  advice as to the value of securities;  the
advisability   of  investing  in,   purchasing  or  selling   securities;   the
availability  of  securities  or  purchasers  or  sellers  of  securities;  and
furnishing  analyses and reports concerning  issuers,  industries,  securities,
economic  factors  and  trends,  portfolio  strategy  and  the  performance  of
accounts.
   
     Consistent with the policy stated above, the Conduct Rules of the National
Association of Securities Dealers, Inc. and such other policies as the Trustees
of the Portfolio may  determine,  Bankers Trust may consider sales of shares of
any  investment  company  that  invests  in the  Portfolio  as a factor  in the
selection of broker-dealers to execute  portfolio  transactions.  Bankers Trust
will make such  allocations if  commissions  are comparable to those charged by
nonaffiliated, qualified broker-dealers for similar services.
    
     Higher  commissions may be paid to firms that provide research services to
the extent permitted by law. Bankers Trust may use this research information in
managing the Portfolio's assets, as well as the assets of other clients.

     Except for implementing  the policies stated above,  there is no intention
to place portfolio  transactions  with particular  brokers or dealers or groups
thereof. In effecting transactions in over-the-counter  securities,  orders are
placed with the principal  market-makers  for the security being traded unless,
after  exercising  care, it appears that more  favorable  results are available
otherwise.

                                      12
<PAGE>
     Although certain research, market and statistical information from brokers
and  dealers can be useful to the  Portfolio  and to Bankers  Trust,  it is the
opinion  of the  management  of the  Portfolio  that such  information  is only
supplementary  to Bankers  Trust's own research  effort,  since the information
must still be analyzed,  weighed and reviewed by Bankers  Trust's  staff.  Such
information  may be useful to Bankers  Trust in  providing  services to clients
other than the  Portfolio's,  and not all such  information  is used by Bankers
Trust in connection with the Portfolio.  Conversely,  such information provided
to Bankers  Trust by brokers and dealers  through whom other clients of Bankers
Trust  effect  securities  transactions  may be  useful  to  Bankers  Trust  in
providing services to the Portfolio.
   
     In certain  instances  there may be  securities  that are suitable for the
Portfolio  as  well  as for  one or more  of  Bankers  Trust's  other  clients.
Investment  decisions for the  Portfolio and for Bankers  Trust's other clients
are made with a view to achieving their respective  investment  objectives.  It
may develop  that a  particular  security is bought or sold for only one client
even  though  it  might be held by,  or  bought  or sold  for,  other  clients.
Likewise,  a particular security may be bought for one or more clients when one
or more clients are selling that same security. Some simultaneous  transactions
are inevitable  when several clients  receive  investment  advice from the same
investment  adviser,  particularly  when the same  security is suitable for the
investment  objectives  of more than one client.  When two or more  clients are
simultaneously  engaged  in the  purchase  or sale of the  same  security,  the
securities are allocated  among clients in a manner believed to be equitable to
each. It is recognized  that in some cases this system could have a detrimental
effect  on the  price or  volume of the  security  as far as the  Portfolio  is
concerned.  However,  it is  believed  that the  ability  of the  Portfolio  to
participate  in volume  transactions  will produce  better  executions  for the
Portfolio.

     For the years ended December 31, 1998,  1997, and 1996, the Portfolio paid
brokerage  commissions  in the  amount of  $534,801,  $341,058,  and  $289,791,
respectively.  For the  year  ended  December  31,  1998,  the  Portfolio  paid
affiliated brokerage commissions in the amount of $333.
    
                             DESCRIPTION OF SHARES
   
The Fund is a series of the  Company  and is  diversified.  The  Company  is an
open-end management investment company incorporated under the laws of the state
of Maryland.  The Company is authorized  to issue shares in separate  series or
Funds. There are ten mutual funds in the Company,  one of which is described in
this SAI.  Under the  Articles  of  Incorporation,  the Board of  Directors  is
authorized  to create new Funds in addition to those already  existing  without
shareholder approval.
    
     The Fund's assets and all income, earnings, profits, and proceeds thereof,
subject only to the rights of  creditors,  are  specifically  allocated to such
Fund.  They  constitute the  underlying  assets of the Fund, are required to be
segregated on the books of account,  and are to be charged with the expenses of
such Fund.  Any general  expenses of the  Company not readily  identifiable  as
belonging  to a  particular  Fund are  allocated  on the  basis  of the  Funds'
relative net assets during the fiscal year or in such other manner as the Board
determines  to be fair and  equitable.  Each share of each Fund  represents  an
equal  proportionate  interest  in that  Fund  with  every  other  share and is
entitled to such dividends and  distributions out of the net income and capital
gains belonging to that Fund when declared by the Board of Directors.
   
     Under the  provisions of the Bylaws of the Company,  no annual  meeting of
shareholders is required. Thus, there will ordinarily be no shareholder meeting
unless  required  by  the  1940  Act.  Under  certain  circumstances,  however,
shareholders  may apply for  shareholder  information  to obtain  signatures to
request a special  shareholder  meeting.  The Company may fill vacancies on the
Board or appoint new Directors if the result is that at least two-thirds of the
Directors have still been elected by  shareholders.  Moreover,  pursuant to the
Bylaws of the Company, any Director may be removed by the affirmative vote of a
majority of the outstanding  Company shares;  and holders of 10% or more of the
outstanding  shares of  theCompany  can require  Directors to call a meeting of
shareholders for the purpose of voting on the removal of one or more Directors.
The  Company  will  assist in  communicating  to other  shareholders  about the
meeting.  On any matter submitted to the shareholders,  the holder of each Fund
share  is  entitled  to one vote  per  share  (with  proportionate  voting  for
fractional  shares)  regardless  of the  relative  NAVs of the  Funds'  shares.
However,  on matters  affecting  an  individual  Fund,  a separate  vote of the
shareholders  of that  Fund  is  required.  Shareholders  of the  Fund  are not
entitled  to vote on any  matter  that  does not  affect  that  Fund but  which
requires a separate vote of another Fund.  Shares do not have cumulative voting
rights,  which means that holders of more than 50% of the shares voting for the
election of Directors can elect 100% of the Company's  Board of Directors,  and
the holders of less than 50% of the shares voting for the election of Directors
will not be able to elect any person as a Director.

                                      13
<PAGE>

     Except as permitted by the  Securities and Exchange  Commission,  whenever
the Fund is requested to vote on matters pertaining to the Portfolio,  the Fund
will hold a meeting of its  shareholders  and will cast all of its votes in the
same proportion as the votes of its  shareholders.  The shareholders who do not
vote will have their votes cast by the  Directors or officers of the Company in
the same proportion as the Fund's shareholders who do, in fact, vote.

     The  Portfolio,  in which all the Assets of the Fund will be invested,  is
organized as a trust under the laws of the State of New York.  The  Portfolio's
Declaration of Trust provides that the Fund and other entities investing in the
Portfolio  (E.G.,  other  investment  companies,   insurance  company  separate
accounts,  and common and  commingled  trust funds) will each be liable for all
obligations of the Portfolio. However, the risk of the Fund incurring financial
loss on account of such  liability  is limited to  circumstances  in which both
inadequate  insurance  exists and the  Portfolio  itself was unable to meet its
obligations. Accordingly, the Company's Directors believe that neither the Fund
nor you will be  adversely  affected by reason of the Fund's  investing  in the
Portfolio.
    
     Shareholders of a particular Fund might have the power to elect all of the
Directors  of the  Company  because  that  Fund  has a  majority  of the  total
outstanding  shares of the Company.  When issued,  each Fund's shares are fully
paid and  nonassessable,  have no pre-emptive or subscription  rights,  and are
fully transferable. There are no conversion rights.

                               TAX CONSIDERATIONS

The Fund intends to qualify as a regulated  investment company under Subchapter
M of the Code.  Accordingly,  the Fund will not be liable  for  federal  income
taxes on its taxable net investment income and net capital gains (capital gains
in excess of capital  losses) that are  distributed to  shareholders,  provided
that the Fund  distributes  at least 90% of its net  investment  income and net
short-term capital gain for the taxable year.

     To qualify as a regulated  investment company,  the Fund must, among other
things,  (1) derive in each  taxable year at least 90% of its gross income from
dividends,  interest, payments with respect to securities loans, gains from the
sale or other disposition of stock, securities or foreign currencies,  or other
income  derived  with  respect to its  business  of  investing  in such  stock,
securities,   or   currencies   (the  90%  test);   and  (2)  satisfy   certain
diversification  requirements,  at the  close  of each  quarter  of the  Fund's
taxable year.

     The Code imposes a nondeductible  4% excise tax on a regulated  investment
company that fails to  distribute  during each calendar year an amount at least
equal  to the sum of (1)  98% of its  taxable  net  investment  income  for the
calendar  year,  (2) 98% of its  capital  gain net income for the  twelve-month
period  ending on October 31, and (3) any prior  amounts not  distributed.  The
Fund intends to make such distributions as are necessary to avoid imposition of
the excise tax.

     Taxable  distributions  are generally  included in a  shareholder's  gross
income for the taxable year in which they are received.  Dividends  declared in
October,  November,  or December and made payable to  shareholders of record in
such a month will be deemed to have been  received on December  31, if the Fund
pays the dividend  during the following  January.  If a shareholder of the Fund
receives a  distribution  taxable as  long-term  capital  gain with  respect to
shares of the Fund and  redeems or  exchanges  the shares  before he or she has
held them for more than six months,  any loss on the  redemption  or  exchanges
that is less than or equal to the amount of the distribution will be treated as
long-term capital loss.

     The Portfolio is not subject to federal income taxation. Instead, the Fund
and other  investors  investing in the  Portfolio  must take into  account,  in
computing  their federal income tax liability,  their share of the  Portfolio's
income,  gains, losses,  deductions,  credits and tax preference items, without
regard to whether they have received any cash distributions from the Portfolio.
   
     Distributions  received by the Fund from the Portfolio  generally will not
result  in the  Fund's  recognizing  any gain or loss for  federal  income  tax
purposes,  except that: (1) gain will be recognized to the extent that any cash
distributed  exceeds the Fund's basis in its interest in the Portfolio prior to
the  distribution;  (2) income or gain may be realized if the  distribution  is
made in liquidation of the Fund's entire interest in the Portfolio and includes
a disproportionate  share of any unrealized  receivables held by the Portfolio;
and (3) loss may be recognized if the  distribution  is made in  liquidation of
the Fund's entire  interest in the Portfolio and consists solely of cash and/or
unrealized  receivables.  The Fund's  basis in its  interest  in the  Portfolio
generally  will equal the amount of cash and the basis of any property that the
Fund invests in the Portfolio, increased by the Fund's share of income from the
Portfolio,  and decreased by the amount of any cash distributions and the basis
of any property distributed from the Portfolio.
    
                                      14
<PAGE>
     Any  gain or  loss  realized  by a  shareholder  upon  the  sale or  other
disposition  of  shares of the  Fund,  or upon  receipt  of a  distribution  in
complete  liquidation  of the Fund,  generally  will be a capital  gain or loss
which  will  be  long-term  or   short-term,   generally   depending  upon  the
shareholder's  holding  period for the shares.  Any loss  realized on a sale or
exchange will be  disallowed to the extent the shares  disposed of are replaced
(including shares acquired pursuant to a dividend  reinvestment  plan) within a
period of 61 days beginning 30 days before and ending 30 days after disposition
of the  shares.  In such a case,  the  basis  of the  shares  acquired  will be
adjusted to reflect the disallowed  loss. Any loss realized by a shareholder on
a disposition of shares held by the  shareholder for six months or less will be
treated as a long-term  capital loss to the extent of any  distributions of net
capital gains received by the shareholder with respect to such shares.

                     DIRECTORS AND OFFICERS OF THE COMPANY
   
The Board of Directors of the Company consists of seven Directors who supervise
the business  affairs of the  Company.  Set forth below are the  Directors  and
officers of the Company,  their  respective  offices and principal  occupations
during the last five years. Unless otherwise indicated, the business address of
each is 9800 Fredericksburg Road, San Antonio, TX 78288.

Robert G. Davis 1, 2
Director and Chairman of the Board of Directors
Age: 52

Deputy  Chief  Executive  Officer for  Capital  Management  of United  Services
Automobile  Association  (USAA)  (6/98-present);   President,  Chief  Executive
Officer,  Director, and Vice Chairman of the Board of Directors of USAA Capital
Corporation  and several of its  subsidiaries  and  affiliates  (1/97-present);
President,  Chief  Executive  Officer,  Director,  and Chairman of the Board of
Directors of USAA Financial Planning Network,  Inc.  (1/97-present);  Executive
Vice President,  Chief Operating  Officer,  Director,  and Vice Chairman of the
Board of Directors  of USAA  Financial  Planning  Network,  Inc.  (6/96-12/96);
Special Assistant to Chairman, USAA (6/96-12/96); President and Chief Executive
Officer,  Banc One Credit  Corporation  (12/95-6/96);  and  President and Chief
Executive  Officer,  Banc One  Columbus,  (8/91-12/95).  Mr.  Davis serves as a
Director/Trustee  and Chairman of the Boards of  Directors/Trustees  of each of
the remaining  funds within the USAA Family of Funds;  Director and Chairman of
the Boards of Directors of USAA  Investment  Management  Company  (IMCO),  USAA
Shareholder  Account Services,  USAA Federal Savings Bank, and USAA Real Estate
Company.

Michael J.C. Roth 1, 2
Director, President, and Vice Chairman of the Board of Directors
Age: 57

Chief Executive Officer, IMCO (10/93-present);  President,  Director,  and Vice
Chairman of the Board of  Directors,  IMCO  (1/90-present).  Mr. Roth serves as
President,   Director/Trustee,   and   Vice   Chairman   of   the   Boards   of
Directors/Trustees  of each of the  remaining  funds  within the USAA Family of
Funds and USAA Shareholder  Account  Services;  Director of USAA Life Insurance
Company; Trustee and Vice Chairman of USAA Life Investment Trust.

John W. Saunders, Jr. 1, 2, 4
Director and Vice President
Age: 64

Senior Vice President,  Fixed Income  Investments,  IMCO  (10/85-present).  Mr.
Saunders serves as Director/Trustee and Vice President of each of the remaining
funds within the USAA Family of Funds;  Director of IMCO; Senior Vice President
of USAA Shareholder  Account  Services;  Vice President of USAA Life Investment
Trust.

Barbara B. Dreeben 3, 4, 5
200 Patterson #1008
San Antonio, TX  78209
Director
Age: 53

President,   Postal  Addvantage  (7/92-present);   Consultant,   Nancy  Harkins
Stationer  (8/91-12/95).  Mrs. Dreeben serves as a Director/Trustee  of each of
the remaining funds within the USAA Family of Funds.

                                      15
<PAGE>
Howard L. Freeman, Jr. 2, 3, 4, 5
2710 Hopeton
San Antonio, TX  78230
Director
Age: 63

Retired. Assistant General Manager for Finance, San Antonio City Public Service
Board  (1976-1996).  Mr.  Freeman serves as a  Director/Trustee  of each of the
remaining funds within the USAA Family of Funds.

Robert L. Mason, Ph.D. 3, 4, 5
12823 Queens Forest
San Antonio, TX  78230
Director
Age: 52

Staff Analyst,  Statistical  Analysis  Section,  Southwest  Research  Institute
(9/98-present);  Manager,  Statistical  Analysis  Section,  Southwest  Research
Institute  (8/75-9/98).  Dr. Mason serves as a Director/Trustee  of each of the
remaining funds within the USAA Family of Funds.

Richard A. Zucker 3, 4, 5
407 Arch Bluff
San Antonio, TX  78216
Director
Age: 55

Vice President, Beldon Roofing and Remodeling (1985-present). Mr. Zucker serves
as a Director/Trustee  of each of the remaining funds within the USAA Family of
Funds.

Michael D. Wagner 1
Secretary
Age: 50

Senior Vice President,  CAPCO General Counsel (01/99-present);  Vice President,
Corporate Counsel, USAA (1982-01/99).  Mr. Wagner has held various positions in
the  legal  department  of USAA  since  1970  and  serves  as  Vice  President,
Secretary, and Counsel, IMCO and USAA Shareholder Account Services;  Secretary,
of each of the remaining funds within the USAA Family of Funds; Vice President,
Corporate Counsel for various other USAA subsidiaries and affiliates.

Alex M. Ciccone 1
Assistant Secretary
Age: 49

Vice  President,  Compliance,  IMCO  (12/94-present);  Vice President and Chief
Operating Officer,  Commonwealth  Shareholder Services  (6/94-11/94);  and Vice
President,  Compliance,  IMCO  (12/91-5/94).  Mr.  Ciccone  serves as Assistant
Secretary of each of the remaining funds within the USAA Family of Funds.

Mark S. Howard 1
Assistant Secretary
Age: 35

Assistant Vice President,  Securities Counsel,  USAA (2/98-present);  Executive
Director,  Securities  Counsel,  USAA  (9/96-2/98);  Senior Associate  Counsel,
Securities  Counsel,  USAA  (5/95-8/96);  Attorney,  Kirkpatrick & Lockhart LLP
(9/90-4/95).  Mr.  Howard  serves as Assistant  Vice  President  and  Assistant
Secretary of IMCO and USAA Shareholder Account Services; Assistant Secretary of
each of the  remaining  Funds within the USAA Family of Funds;  Assistant  Vice
President,   Securities  Counsel,  for  various  other  USAA  subsidiaries  and
affiliates.

Sherron A. Kirk 1
Treasurer
Age: 54

Vice President, Senior Financial Officer, IMCO (8/98-present);  Vice President,
Controller,  IMCO (10/92-  8/98).  Mrs. Kirk serves as Treasurer of each of the
remaining  funds  within  the USAA  Family of  Funds;  Vice  President,  Senior
Financial Officer of USAA Shareholder Account Services.

                                      16
<PAGE>
Caryl Swann 1
Assistant Treasurer
Age: 51

Executive  Director,  Mutual  Fund  Analysis & Support,  IMCO  (10/98-present);
Director, Mutual Fund Portfolio Analysis & Support, IMCO (2/98-10/98); Manager,
Mutual  Fund  Accounting,  IMCO  (7/92-2/98).  Ms.  Swann  serves as  Assistant
Treasurer for each of the remaining funds within the USAA Family of Funds.
    
- ---------------

 1 Indicates  those  Directors and officers who are employees of the Manager or
   affiliated companies and are considered  "interested persons" under the 1940
   Act.
 2 Member of Executive Committee
 3 Member of Audit Committee
 4 Member of Pricing and Investment Committee
 5 Member of Corporate Governance Committee

     Between the meetings of the Board of Directors  and while the Board is not
in session,  the  Executive  Committee  of the Board of  Directors  has all the
powers  and may  exercise  all the  duties  of the  Board of  Directors  in the
management  of the business of the Company  which may be delegated to it by the
Board. The Pricing and Investment Committee of the Board of Directors acts upon
various  investment-related  issues and other matters which have been delegated
to it by the Board.  The Audit Committee of the Board of Directors  reviews the
financial  statements and the auditor's reports and undertakes  certain studies
and analyses as directed by the Board.  The Corporate  Governance  Committee of
the Board of Directors  maintains  oversight of the organization,  performance,
and effectiveness of the Board and independent Directors.
   
     In addition to the  previously  listed  Directors  and/or  officers of the
Company  who also  serve as  Directors  and/or  officers  of the  Manager,  the
following  individuals are Directors and/or executive  officers of the Manager:
Carl W. Shirley, Senior Vice President,  Insurance Company Portfolios;  John J.
Dallahan,  Senior Vice President,  Investment  Services;  and David G. Peebles,
Senior Vice President,  Equity Investments.  There are no family  relationships
among the Directors, officers, and managerial level employees of the Company or
its Manager.

     The following table sets forth information  describing the compensation of
the current  Directors of the Company for their  services as Directors  for the
fiscal year ended December 31, 1998.
    
     Name                              Aggregate            Total  Compensation
      of                             Compensation              from the USAA
   Director                        from the Company         Family of Funds (b)
   --------                        ----------------         -------------------
   
Robert G. Davis                          None (a)                    None (a)
Barbara B. Dreeben                     $ 9,536                   $ 36,000
Howard L. Freeman, Jr.                 $ 9,536                   $ 36,000
Robert L. Mason                        $ 9,536                   $ 36,000
Michael J.C. Roth                        None (a)                    None (a)
John W. Saunders, Jr.                    None (a)                    None (a)
Richard A. Zucker                      $ 9,536                   $ 36,000
    
- ----------------

 (a) Robert  G.  Davis,  Michael  J.C.  Roth,  and John W.  Saunders,  Jr.  are
     affiliated with the Company's investment adviser,  IMCO, and, accordingly,
     receive  no  remuneration  from the  Company or any other Fund of the USAA
     Family of Funds.
   
 (b) At  December  31,  1998,  the  USAA  Family  of  Funds  consisted  of four
     registered   investment  companies  offering  35  individual  funds.  Each
     Director  presently  serves as a Director  or  Trustee of each  investment
     company  in the USAA  Family of Funds.  In  addition,  Michael  J.C.  Roth
     presently serves as a Trustee of USAA Life Investment  Trust, a registered
     investment  company advised by IMCO,  consisting of seven funds offered to
     investors  in a  fixed  and  variable  annuity  contract  with  USAA  Life
     Insurance  Company.  Mr. Roth receives no  compensation as Trustee of USAA
     Life Investment Trust.

     All of the above Directors are also  Directors/Trustees of the other funds
in the  USAA  Family  of  Funds.  No  compensation  is paid by any  fund to any
Director/Trustee  who is a  director,  officer,  or  employee  of  IMCO  or its
affiliates.  No  pension or  retirement  benefits  are  accrued as part of fund
expenses. The Company

                                      17
<PAGE>
reimburses  certain  expenses of the Directors who are not affiliated  with the
investment  adviser.  As of January 31, 1999, the officers and Directors of the
Company and their families as a group owned beneficially or of record less than
1% of the outstanding shares of the Company.

     As of January 31, 1999, USAA and its affiliates  owned  49,358,672  shares
(41.4%) of the USAA S&P 500 Index Fund.

     The Company knows of no other persons who, as of January 31, 1999, held of
record  or owned  beneficially  5% or more of the  voting  stock of the  Fund's
shares.
    
                    TRUSTEES AND OFFICERS OF THE PORTFOLIO
   
The Trustees  and officers of the  Portfolio  and their  birthdates,  principal
occupations  during the past five years,  and  addresses  are set forth  below.
Their titles may have varied during that period.  Unless  otherwise  indicated,
the address of each Trustee and officer is 5800  Corporate  Drive,  Pittsburgh,
Pennsylvania, 15237-5829.

     HARRY VAN BENSCHOTEN  (birthdate:  February 18, 1928) -- Trustee;  Retired
(since 1987);  Corporate Vice President,  Newmont Mining  Corporation (prior to
1987); Director, Canada Life Insurance Company of New York. His address is 6581
Ridgewood Drive, Naples, Florida 34108.

     MARTIN J. GRUBER (birthdate:  July 15, 1937) -- Trustee;  Nomura Professor
of Finance,  Leonard N. Stern School of Business,  New York  University  (since
1964). His address is 229 S. Irving Street, Ridgewood, New Jersey 07450.

     KELVIN J. LANCASTER (birthdate:  December 10, 1924) -- Trustee; John Bates
Clark  Professor  of  Economics,  Columbia  University;  Distinguished  Fellow,
American Economics Association;  Fellow, American Academy of Arts and Sciences;
Fellow, Econometric Society; Former Chairman, Columbia University Department of
Economics;  Former Director,  National Bureau of Economic Research. His address
is 35 Claremont Avenue, New York, New York 10027.
    
     CHARLES P.  BIGGAR  (birthdate:  October 13,  1930) --  Trustee;  Retired;
formerly  Vice  President  of  International   Business  Machines  ("IBM")  and
President of the National Services and the Field Engineering  Divisions of IBM.
His address is 12 Hitching Post Lane, Chappaqua, New York 10514.

     S. LELAND DILL (birthdate:  March 28, 1930) -- Trustee; Retired; Director,
Coutts  Group;  Coutts  (U.S.A.)  International;  Coutts Trust  Holdings,  Ltd;
Director, Zweig Series Trust; formerly Partner of KPMG Peat Marwick;  Director,
Vinters  International  Company Inc.;  General  Partner of Pemco (an investment
company  registered under the 1940 Act). His address is 5070 North Ocean Drive,
Singer Island, Florida 33404.

     PHILIP SAUNDERS, JR. (birthdate:  October 11, 1935) -- Trustee; Principal,
Philip Saunders Associates (Consulting);  former Director of Financial Industry
Consulting,  Wolf & Company; President, John Hancock Home Mortgage Corporation;
and Senior Vice  President of Treasury  and  Financial  Services,  John Hancock
Mutual Life  Insurance  Company,  Inc.  His  address is 445 Glen Road,  Weston,
Massachusetts 02193.
   
Unless otherwise  specified,  each officer listed below holds the same position
with the Trust and the Portfolio.

     JOHN Y. KEFFER (birthdate: July 14, 1942) -- President and Chief Executive
Officer;  President,  Forum Financial  Group. His address is 2 Portland Square,
Portland, Maine 04101.

     JOSEPH  A.  FINELLI  (birthdate:  January  24,  1957) --  Treasurer;  Vice
President,  BT Alex. Brown Incorporated and Vice President,  Investment Company
Capital  Corp.  (registered  investment  adviser),  September  1995 to present;
formerly, Vice President and Treasurer, The Delaware Group of Funds (registered
investment  companies) and Vice  President,  Delaware  Management  Company Inc.
(investments), 1980 to August 1995. His address is One South Street, Baltimore,
Maryland 21202.

     DANIEL O. HIRSCH (birthdate:  March 27, 1954) -- Secretary;  Principal, BT
Alex.  Brown since July 1998;  Assistant  General  Counsel in the Office of the
General  Counsel at the United States  Securities and Exchange  Commission from
1993 to 1998. His address is 2901 Dorset Avenue, Chevy Chase, Maryland 20815.

     Messrs.  Keffer,  Finelli and Hirsch also hold similar positions for other
investment companies for which ICC Distributors,  or an affiliate serves as the
principal underwriter.

                                      18
<PAGE>
     No person who is an officer or director of Bankers  Trust is an officer or
Trustee of the Portfolio. No director,  officer or employee of ICC Distributors
or any of its affiliates will receive any  compensation  from the Portfolio for
serving as an officer or Trustee of the Portfolio and certain other  investment
companies advised by Bankers Trust (the Fund Complex).

     The  following  table  reflects fees paid to the Trustees of the Portfolio
for the year ended December 31, 1998.
    
                           TRUSTEE COMPENSATION TABLE

                                   Aggregate          Total Compensation
           Name of Person,       Compensation         from Fund Complex
              Position          from Portfolio         Paid to Trustees
              --------          --------------         ----------------
   
       Harry Van Benschoten
       Trustee                       None                    None

       Martin J. Gruber
       Trustee                       None                    None

       Kelvin J. Lancaster
       Trustee                       None                    None

       Charles P. Biggar
       Trustee                     $ 1,148                 $36,250

       S. Leland Dill
       Trustee                     $   971                 $36,250

       Philip Saunders, Jr.
       Trustee                     $   977                 $36,250

     Bankers Trust  reimbursed  the  Portfolio for a portion of their  Trustees
fees for the period above. Refer to the following  sections  INVESTMENT ADVISER
and ADMINISTRATOR.
    
                               INVESTMENT ADVISER
   
As described in the Fund's  Prospectus,  USAA Investment  Management Company is
the Manager and investment adviser, providing the services under the Management
Agreement. The Manager, a wholly owned subsidiary of United Services Automobile
Association (USAA), a large,  diversified financial services  institution,  was
organized in May 1970,  has served as investment  adviser and  underwriter  for
USAA Mutual Fund, Inc. from its inception.

     In addition to the services it provides  under the  Management  Agreement,
the Manager  advises and manages the  investments  for USAA and its  affiliated
companies  as well as those of USAA  Investment  Trust,  USAA Tax Exempt  Fund,
Inc., USAA State Tax-Free Trust, and USAA Life Investment Trust. As of the date
of this SAI,  total assets under  management by the Manager were  approximately
$____  billion,  of which  approximately  $____  billion  were in  mutual  fund
portfolios.
    
     Under  the  Management  Agreement,  the  Manager  presently  monitors  the
services  provided by Bankers Trust to the Portfolio.  The Manager  receives no
fee for providing these monitoring  services.  In the event the Fund's Board of
Directors  determines it is in the best interests of the Fund's shareholders to
withdraw its investment in the Portfolio,  the Manager would become responsible
for directly managing the assets of the Fund. In such event, the Fund would pay
the  Manager an annual fee of .10% of the Fund's  ANA,  accrued  daily and paid
monthly.
   
     The  Management  Agreement will remain in effect until April 30, 2000, for
the Fund and will continue in effect from year to year  thereafter for the Fund
as long as it is approved at least annually by a vote of the outstanding voting
securities  of the  Fund  (as  defined  by the  1940  Act) or by the  Board  of
Directors  (on behalf of such Fund)  including a majority of the  Directors who
are not interested  persons of the Manager or (otherwise  than as Directors) of
the Company,  at a meeting  called for the purpose of voting on such  approval.
The Management Agreement may be terminated at any time by either the Company or
the Manager on 60 days' written notice. It will automatically  terminate in the
event of its assignment (as defined by the 1940 Act).

                                      19
<PAGE>
     Bankers Trust,  subject to the  supervision  and direction of the Board of
Trustees  of the  Portfolio,  manages  the  Portfolio  in  accordance  with the
Portfolio's   investment  objective  and  stated  investment  policies,   makes
investment  decisions  for the  Portfolio,  places  orders to purchase and sell
securities  and other  financial  instruments  on behalf of the  Portfolio  and
employs  professional  investment  managers and securities analysts who provide
research services to the Portfolio.  Bankers Trust may utilize the expertise of
any of its world wide  subsidiaries  and affiliates to assist it in its role as
investment  adviser.  All orders for investment  transactions  on behalf of the
Portfolio are placed by Bankers Trust with  broker-dealers  and other financial
intermediaries that it selects,  including those affiliated with Bankers Trust.
A Bankers Trust affiliate will be used in connection with a purchase or sale of
an  investment  for the  Portfolio  only if  Bankers  Trust  believes  that the
affiliate's  charge for the  transaction  does not exceed  usual and  customary
levels. The Portfolio will not invest in obligations for which Bankers Trust or
any of its affiliates is the ultimate  obligor or accepting bank. The Portfolio
may,  however,  invest in the  obligations of  correspondents  and customers of
Bankers  Trust.
    
     Under the terms of the  Portfolio's  investment  advisory  agreement  with
Bankers  Trust (the Advisory  Agreements),  Bankers Trust manages the Portfolio
subject  to the  supervision  and  direction  of the Board of  Trustees  of the
Portfolio.   Bankers  Trust  will:  (1)  act  in  strict  conformity  with  the
Portfolio's  Declaration of Trust, the 1940 Act and the Investment Advisers Act
of 1940, as the same may from time to time be amended; (2) manage the Portfolio
in accordance  with the  Portfolio's  investment  objective,  restrictions  and
policies;  (3) make  investment  decisions  for the  Portfolio;  and (4)  place
purchase and sale orders for  securities  and other  financial  instruments  on
behalf of the Portfolio.
   
     Bankers Trust bears all expenses in  connection  with the  performance  of
services  under the Advisory  Agreement.  The Fund and the Portfolio  each bear
certain other expenses incurred in its operation,  including:  taxes, interest,
brokerage  fees and  commissions,  if any; fees of Trustees of the Portfolio or
Directors  of the Company  who are not  officers,  directors  or  employees  of
Bankers Trust, ICC Distributors or any of their affiliates,  the Manager or any
of their affiliates; SEC fees and state Blue Sky qualification fees; charges of
custodians  and transfer  and dividend  disbursing  agents;  certain  insurance
premiums;  outside  auditing  and  legal  expenses;  costs  of  maintenance  of
corporate  existence;  costs  attributable  to  investor  services,  including,
without limitation,  telephone and personnel  expenses;  costs of preparing and
printing  prospectuses and statements of additional  information for regulatory
purposes and for distribution to existing shareholders;  costs of shareholders'
reports and meetings of shareholders, officers and Trustees of the Portfolio or
Directors of the Company; and any extraordinary expenses.

     For the years ended  December  31, 1998,  1997,  and 1996,  Bankers  Trust
earned $3,186,503,  $2,430,147, and $1,505,963,  respectively,  as compensation
for investment  advisory  services  provided to the Portfolio.  During the same
periods,   Bankers  Trust  reimbursed  $799,296,   $1,739,490,   and  $870,024,
respectively,  to the Portfolio to cover advisory and  administrative  expenses
exceeding expense limitations that were in effect for those periods.
    
     Bankers  Trust  may  have  deposit,  loan  and  other  commercial  banking
relationships  with the issuers of obligations which may be purchased on behalf
of the Portfolio,  including  outstanding  loans to such issuers which could be
repaid in whole or in part with the proceeds of securities  so purchased.  Such
affiliates  deal,  trade and invest for their own accounts in such  obligations
and are among the leading dealers of various types of such obligations. Bankers
Trust has informed the Portfolio that, in making its investment  decisions,  it
does not obtain or use material inside  information in its possession or in the
possession of any of its affiliates.  In making investment  recommendations for
the  Portfolio,  Bankers  Trust  will not  inquire  or take into  consideration
whether an issuer of securities  proposed for purchase or sale by the Portfolio
is a customer of Bankers Trust,  its parent or its  subsidiaries  or affiliates
and, in dealing with its customers, Bankers Trust, its parent, subsidiaries and
affiliates will not inquire or take into  consideration  whether  securities of
such customers are held by any fund managed by Bankers Trust or such affiliate.

                                 ADMINISTRATOR

Under the terms of the Fund's  administration  agreement with the Manager,  the
Manager is  obligated  on a  continuous  basis to provide  such  administrative
services as the Board of Directors of the Company  reasonably  deems  necessary
for the proper administration of the Fund. The Manager will generally assist in
all aspects of the Fund's  operations;  supply and maintain office  facilities,
statistical and research data, data processing services, clerical,  accounting,
bookkeeping  and  recordkeeping  services  (including  without  limitation  the
maintenance  of such books and records as are  required  under the 1940 Act and
the rules thereunder, except as maintained by other agents), internal auditing,
executive and administrative

                                      20
<PAGE>
services, and stationery and office supplies;  prepare reports to shareholders;
prepare and file tax returns;  supply financial information and supporting data
for reports to and filings with the SEC and various state Blue Sky authorities;
supply supporting documentation for meetings of the Board of Directors; provide
monitoring  reports and assistance  regarding  compliance  with its Articles of
Incorporation, by-laws, investment objectives and policies and with federal and
state securities laws; arrange for appropriate  insurance  coverage;  calculate
net asset  values,  net  income  and  realized  capital  gains or  losses;  and
negotiate  arrangements  with,  and supervise and coordinate the activities of,
agents and others to supply services.
           
     Under the  administration and services agreement between the Portfolio and
Bankers Trust, Bankers Trust is obligated on a continuous basis to provide such
administrative  services as the Board of Trustees of the  Portfolio  reasonably
deems necessary for the proper  administration of the Portfolio.  Bankers Trust
will generally assist in all aspects of the Portfolio's operations;  supply and
maintain  office  facilities  (which may be in Bankers  Trust's  own  offices),
statistical and research data, data processing services, clerical,  accounting,
bookkeeping  and  recordkeeping  services  (including  without  limitation  the
maintenance  of such books and records as are  required  under the 1940 Act and
the rules thereunder, except as maintained by other agents), internal auditing,
executive and  administrative  services,  and stationery  and office  supplies;
prepare reports to investors;  prepare and file tax returns;  supply  financial
information  and  supporting  data for reports to and filings  with the SEC and
various  state  Blue  Sky  authorities;  supply  supporting  documentation  for
meetings of the Board of Trustees;  provide  monitoring  reports and assistance
regarding  compliance  with  its  Declaration  of  Trust,  by-laws,  investment
objectives and policies and with federal and state securities laws; arrange for
appropriate  insurance  coverage;  calculate net asset  values,  net income and
realized  capital  gains  or  losses;  and  negotiate  arrangements  with,  and
supervise  and  coordinate  the  activities  of,  agents  and  others to supply
services.

     Pursuant  to a  sub-administration  agreement  between  Bankers  Trust and
Federated Services Company (FSC), FSC performs such  sub-administration  duties
for the  Portfolio as from time to time may be agreed upon by Bankers Trust and
FSC.  The  Sub-Administration  Contract  provides  that FSC will  receive  such
compensation  as from time to time may be agreed upon by FSC and Bankers Trust.
All such compensation will be paid by Bankers Trust.
   
     For the fiscal years ended December 31, 1998, 1997, and 1996 Bankers Trust
earned $676,625,  $1,215,073, and $752,981,  respectively,  as compensation for
administrative  and other services  provided to the  Portfolio.  For the fiscal
year ended December 31, 1998,  Bankers Trust waived $139,957 in  administrative
fees charged to the Portfolio.

     For the fiscal years ended  December 31, 1998, and 1997 the Manager earned
$461,363,  and $93,126,  respectively,  as compensation for  administrative and
other  services  provided to the Fund.  For the fiscal year ended  December 31,
1996, the Manager did not receive any compensation for administrative and other
services and waived $14,175 in administrative fees charged to the Fund.

     Effective  as of January 1, 1999,  the  Manager  entered  into a servicing
agreement  with Bankers Trust pursuant to which Bankers Trust has agreed to pay
the Manager a fee for performing the following  services:  providing  marketing
and promotional  materials and other information  relating to the Portfolio and
the  Fund to  current  and  prospective  shareholders  of the  Fund;  assisting
shareholders in opening or maintaining  accounts with the Fund; and maintaining
and preserving  records in connection with providing these services.  For these
services,  Bankers  Trust has  agreed to pay the  Manager a monthly  fee in the
amount of .02 of 1% per annum of the  amount  by which  the  average  daily net
assets of the Fund invested in the Portfolio exceed $1.75 billion.
    
                              GENERAL INFORMATION

UNDERWRITER

The Company has an agreement  with the Manager for exclusive  underwriting  and
distribution  of the Fund's  shares on a continuing  best efforts  basis.  This
agreement  provides that the Manager will receive no fee or other  compensation
for such distribution services

TRANSFER AGENT

The Transfer  Agent  performs  transfer  agent services for the Company under a
Transfer Agency Agreement.  Services include maintenance of shareholder account
records,  handling of communications  with  shareholders,  distribution of Fund
dividends,  and  production  of reports  with  respect to account  activity for
shareholders and the Company.

                                      21
<PAGE>
CUSTODIAN

The  Custodian  is  responsible  for,  among  other  things,  safeguarding  and
controlling  the  Company's  cash and  securities,  handling  the  receipt  and
delivery of securities,  and collecting interest on the Company's investment in
the  Portfolio.  Bankers  Trust serves as  custodian  for both the Fund and the
Portfolio.  As custodian,  it holds both the Fund's and the Portfolio's assets.
Bankers  Trust will comply  with the  self-custodian  provisions  of Rule 17f-2
under the 1940 Act.

COUNSEL
   
Goodwin,  Procter & Hoar LLP,  Exchange Place,  Boston,  MA 02109,  will review
certain legal matters for the Company in connection  with the shares offered by
the Prospectus.  Willkie Farr & Gallagher,  787 Seventh  Avenue,  New York, New
York 10019-6099 serves as counsel to the Portfolio.

INDEPENDENT ACCOUNTANTS

PricewaterhouseCoopers  LLP, 250 West Pratt Street,  Baltimore,  Maryland 21201
has  been  selected  as the  Independent  Accountants  for  the  Fund  and  the
Portfolio.

BANKING REGULATORY MATTERS

Bankers Trust has been advised by its counsel that in its opinion Bankers Trust
may  perform  the  services  for the  Portfolio  contemplated  by the  Advisory
Agreements and other activities for the Fund and the Portfolio described in the
Prospectus and this SAI without  violation of the  Glass-Steagall  Act or other
applicable banking laws or regulations.  However,  counsel has pointed out that
future changes in either federal or state statutes and  regulations  concerning
the  permissible  activities  of banks or trust  companies,  as well as  future
judicial or administrative  decisions or  interpretations of present and future
statutes and  regulations,  might  prevent  Bankers  Trust from  continuing  to
perform  those  services  for the Trust and the  Portfolio.  State laws on this
issue may differ from the interpretations of relevant federal law and banks and
financial institutions may be required to register as dealers pursuant to state
securities law. If the circumstances  described above should change,  the Board
of Trustees  would  review the  relationship  with  Bankers  Trust and consider
taking all actions necessary in the circumstances.
    
                        CALCULATION OF PERFORMANCE DATA
   
Information  regarding the total return of the Fund is provided under COULD THE
VALUE  OF YOUR  INVESTMENT  IN THIS  FUND  FLUCTUATE?  in its  Prospectus.  See
VALUATION  OF  SECURITIES  herein for a  discussion  of the manner in which the
Fund's price per share is calculated.
    
TOTAL RETURN

The Fund may advertise  performance in terms of average annual total return for
1-, 5-, and 10-year periods, or for such lesser periods as the Fund has been in
existence.  Average  annual  total  return is  computed  by finding the average
annual  compounded  rates of return  over the  periods  that  would  equate the
initial  amount  invested  to the ending  redeemable  value,  according  to the
following formula:

                                P(1 + T)n = ERV

     Where:     P  =  a hypothetical initial payment of $1,000
                T  =  average annual total return
                n  =  number of years
              ERV  =  ending  redeemable  value  of  a  hypothetical  $1,000
                      payment  made at the  beginning of the 1-, 5-, or 10-year
                      periods at the end of the year or period
   
     The  calculation  assumes any charges are deducted from the initial $1,000
payment and assumes all dividends and distributions by such Fund are reinvested
at the price  stated in the  Prospectus  on the  reinvestment  dates during the
period and  includes  all  recurring  fees that are charged to all  shareholder
accounts. For periods after December 31, 1998, performance does not reflect the
annual $10 account maintenance fee, which fee is waived for accounts of $10,000
or  more.  As of  December  31,  1998,  the  Fund's  average  account  size was
approximately $28,242.

     The Fund's  total  return for the fiscal year ended  December 31, 1998 was
28.62%.
    
                                      22
<PAGE>
                  APPENDIX A - COMPARISON OF FUND PERFORMANCE

Occasionally,  we may make  comparisons  in  advertising  and sales  literature
between  the Fund  contained  in this SAI and other Funds in the USAA Family of
Funds. These comparisons may include such topics as risk and reward, investment
objectives, investment strategies, and performance.

     Fund  performance  also may be compared to the performance of broad groups
of  mutual  funds  with  similar  investment  goals  or  unmanaged  indices  of
comparable  securities.  Evaluations  of Fund  performance  made by independent
sources  may also be used in  advertisements  concerning  the  Fund,  including
reprints of, or selections  from,  editorials or articles  about the Fund.  The
Fund or its  performance  may also be  compared to products  and  services  not
constituting securities subject to registration under the 1933 Act such as, but
not limited to, certificates of deposit and money market accounts.  Sources for
performance  information  and  articles  about the Fund may include but are not
restricted to the following:

AAII  JOURNAL,  a monthly  association  magazine  for  members of the  American
Association of Individual Investors.
   
ARIZONA REPUBLIC, a newspaper that may cover financial and investment news.
    
AUSTIN AMERICAN-STATESMAN, a newspaper that may cover financial news.
   
BANK RATE MONITOR, a service that publishes rates on various bank products such
as CDs, MMDAs, and credit cards.
    
BARRON'S,  a Dow Jones and Company,  Inc.  business and  financial  weekly that
periodically reviews mutual fund performance data.

BUSINESS  WEEK,  a national  business  weekly  that  periodically  reports  the
performance rankings and ratings of a variety of mutual funds.
   
CHICAGO TRIBUNE, a newspaper that may cover financial news.

CONSUMER  REPORTS,  a  monthly  magazine  that  from  time to time  reports  on
companies in the mutual fund industry.
    
DALLAS MORNING NEWS, a newspaper that may cover financial news.

DENVER POST, a newspaper that may quote financial news.
   
FINANCIAL PLANNING, a monthly magazine that may periodically review mutual fund
companies.
    
FINANCIAL SERVICES WEEK, a weekly newspaper that covers financial news.

FINANCIAL WORLD, a monthly magazine that periodically features companies in the
mutual fund industry.

FORBES,  a  national  business   publication  that  periodically   reports  the
performance of companies in the mutual fund industry.

FORTUNE,   a  national  business   publication  that  periodically   rates  the
performance of a variety of mutual funds.

FUND ACTION, a mutual fund news report.
   
HOUSTON CHRONICLE, a newspaper that may cover financial news.
    
HOUSTON POST, a newspaper that may cover financial news.
   
IBC'S MONEY FUND REPORT,  a weekly  publication  of IBC Financial  Data,  Inc.,
reporting on the  performance of the nation's  money market funds,  summarizing
money market fund  activity,  and  including  certain  averages as  performance
benchmarks, specifically "IBC's Taxable First Tier Fund Average."
    
IBC'S MONEY MARKET INSIGHT,  a monthly money market industry  analysis prepared
by IBC Financial Data, Inc.
   
IBC'S  MONEYLETTER,  a biweekly  newsletter that covers financial news and from
time to time rates specific mutual funds.
    
INCOME AND SAFETY, a monthly newsletter that rates mutual funds.

INVESTECH, a bimonthly investment newsletter.

INVESTMENT  ADVISOR,  a monthly  publication  directed primarily to the advisor
community; includes ranking of mutual funds using a proprietary methodology.

INVESTMENT  COMPANY  INSTITUTE,   the  national  association  of  the  American
investment company industry.

INVESTOR'S BUSINESS DAILY, a newspaper that covers financial news.

                                      23
<PAGE>
KIPLINGER'S   PERSONAL  FINANCE  MAGAZINE,   a  monthly   investment   advisory
publication  that  periodically  features  the  performance  of  a  variety  of
securities.

LIPPER ANALYTICAL SERVICES,  INC.'S EQUITY FUND PERFORMANCE  ANALYSIS, a weekly
and monthly publication of industry-wide mutual fund averages by type of fund.

LIPPER ANALYTICAL  SERVICES,  INC.'S FIXED INCOME FUND PERFORMANCE  ANALYSIS, a
monthly publication of industry-wide  mutual fund performance  averages by type
of fund.
   
LOS ANGELES TIMES, a newspaper that may cover financial news.
    
LOUIS RUKEYSER'S WALL STREET, a publication for investors.

MEDICAL  ECONOMICS,  a monthly  magazine  providing  information to the medical
profession.

MONEY, a monthly  magazine that features the performance of both specific funds
and the mutual fund industry as a whole.

MORNINGSTAR 5 STAR INVESTOR,  a monthly  newsletter that covers  financial news
and rates mutual funds by

MORNINGSTAR, INC. (a data service which tracks open-end mutual funds).

MUTUAL FUND FORECASTER, a monthly newsletter that ranks mutual funds.

MUTUAL FUND INVESTING, a newsletter covering mutual funds.

MUTUAL  FUND  PERFORMANCE   REPORT,  a  monthly   publication  of  mutual  fund
performance and rankings, produced by Morningstar, Inc.

MUTUAL  FUNDS  MAGAZINE,  a  monthly  publication   reporting  on  mutual  fund
investing.

MUTUAL FUND SOURCE BOOK, an annual  publication  produced by Morningstar,  Inc.
which describes and rates mutual funds.

MUTUAL  FUND  VALUES,  a  biweekly   guidebook  to  mutual  funds  produced  by
Morningstar, Inc.

NEWSWEEK, a national business weekly.
   
NEW YORK TIMES, a newspaper that may cover financial news.
    
NO LOAD FUND  INVESTOR,  a  newsletter  covering  companies  in the mutual fund
industry.
   
ORLANDO SENTINEL, a newspaper that may cover financial news.

PERSONAL  INVESTOR,  a monthly  magazine that from time to time features mutual
fund companies and the mutual fund industry.
    
SAN ANTONIO  BUSINESS  JOURNAL,  a weekly  newspaper that  periodically  covers
mutual fund companies as well as financial news.
   
SAN ANTONIO EXPRESS-NEWS, a newspaper that may cover financial news.

SAN FRANCISCO CHRONICLE, a newspaper that may cover financial news.
    
SMART MONEY,  a monthly  magazine  featuring news and articles on investing and
mutual funds.

USA TODAY, a newspaper that may cover financial news.

U.S.  NEWS AND WORLD  REPORT,  a national  business  weekly  that  periodically
reports mutual fund performance data.
   
WALL  STREET  JOURNAL,  a Dow Jones and  Company,  Inc.  newspaper  that covers
financial news.

WASHINGTON POST, a newspaper that may cover financial news.
    
WEISENBERGER  MUTUAL FUNDS INVESTMENT REPORT, a monthly newsletter that reports
on both specific mutual fund companies and the mutual fund industry as a whole.
   
WORTH,  a magazine that covers  financial  and  investment  subjects  including
mutual funds.
    
YOUR MONEY, a monthly magazine directed toward the novice investor.
   
     In  addition  to the sources  above,  performance  of the Fund may also be
tracked by Lipper Analytical Services,  Inc. and Morningstar,  Inc. A Fund will
be compared to Lipper's or Morningstar's appropriate fund category according to
its objective and portfolio  holdings.  Footnotes in  advertisements  and other
sales literature will include the time period applicable for any rankings used.

     Other sources for total return and other performance data that may be used
by the Fund or by those publications listed previously are Schabaker Investment
Management  and Investment  Company Data,  Inc. These are services that collect
and compile data on mutual fund companies.
    
                                      24
<PAGE>
                       APPENDIX B - DOLLAR-COST AVERAGING

Dollar-cost  averaging is a systematic  investing method,  which can be used by
investors as a disciplined technique for investing.  A fixed amount of money is
invested in a security (such as a stock or mutual fund) on a regular basis over
a period of time,  regardless  of whether  securities  markets are moving up or
down.

     This  practice  reduces  average  share costs to the investor who acquires
more shares in periods of lower  securities  prices and fewer shares in periods
of higher prices.

     While  dollar-cost  averaging does not assure a profit or protect  against
loss in declining markets, this investment strategy is an effective way to help
calm the effect of fluctuations in the financial markets.  Systematic investing
involves  continuous  investment in securities  regardless of fluctuating price
levels of such securities. Investors should consider their financial ability to
continue purchases through periods of low and high price levels.

     As the following chart  illustrates,  dollar-cost  averaging tends to keep
the overall cost of shares lower.  This example is for  illustration  only, and
different trends would result in different average costs.

                        HOW DOLLAR-COST AVERAGING WORKS

                     $100 Invested Regularly for 5 Periods
                                  Market Trend
      --------------------------------------------------------------------

                  Down                     Up                    Mixed
           --------------------   ---------------------    --------------------
             Share     Shares       Share      Shares        Share     Shares
Investment   Price    Purchased     Price     Purchased      Price    Purchased
           --------------------   ---------------------    --------------------
   $100       10        10            6         16.67         10          10
    100        9        11.1          7         14.29          9          11.1
    100        8        12.5          7         14.29          8          12.5
    100        8        12.5          9         11.1           9          11.1
    100        6        16.67        10         10            10          10
   ----       --        -----        --         -----         --          -----
   $500    ***41        62.77     ***39         66.35      ***46          54.7

          *Avg. Cost:  $ 7.97    *Avg. Cost:   $ 7.54        *Avg. Cost: $ 9.14
                        -----                    -----                    -----
         **Avg. Price: $ 8.20    **Avg. Price: $ 7.80      **Avg. Price: $ 9.20
                        -----                    -----                    -----

  *  Average  Cost is the total  amount  invested  divided  by number of shares
     purchased.
 **  Average  Price  is  the  sum of the  prices  paid  divided  by  number  of
     purchases.
***  Cumulative total of share prices used to compute average prices.

                                      25
<PAGE>
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                                      26
<PAGE>
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                                      27
<PAGE>
   
28083-0599
    
<PAGE>
                             USAA MUTUAL FUND, INC.

PART C.       OTHER INFORMATION

    Item 23.                          EXHIBITS
                                      --------
   
     1  (a)   Articles of Incorporation dated October 10, 1980 (1)
        (b)   Articles of Amendment dated January 14, 1981 (1)
        (c)   Articles Supplementary dated July 28, 1981 (1)
        (d)   Articles Supplementary dated November 3, 1982 (1)
        (e)   Articles of Amendment dated May 18, 1983 (1)
        (f)   Articles Supplementary dated August 8, 1983 (1)
        (g)   Articles Supplementary dated July 27, 1984 (1)
        (h)   Articles Supplementary dated November 5, 1985 (1)
        (i)   Articles Supplementary dated January 23, 1987 (1)
        (j)   Articles Supplementary dated May 13, 1987 (1)
        (k)   Articles Supplementary dated January 25, 1989 (1)
        (l)   Articles Supplementary dated May 2, 1991 (1)
        (m)   Articles Supplementary dated November 14, 1991 (1)
        (n)   Articles Supplementary dated April 14, 1992 (1)
        (o)   Articles Supplementary dated November 4, 1992 (1)
        (p)   Articles Supplementary dated March 23, 1993 (1)
        (q)   Articles Supplementary dated May 5, 1993 (1)
        (r)   Articles Supplementary dated November 8, 1993 (1)
        (s)   Articles Supplementary dated January 18, 1994 (1)
        (t)   Articles Supplementary dated November 9, 1994 (1)
        (u)   Articles Supplementary dated November 8, 1995 (2)
        (v)   Articles Supplementary dated February 6, 1996 (3)
        (w)   Articles Supplementary dated March 12, 1996 (4)
        (x)   Articles Supplementary dated November 13, 1996 (7)
        (y)   Articles Supplementary dated May 9, 1997 (8)
        (z)   Articles of Amendment dated July 9, 1997 (9)
       (aa)   Articles Supplementary dated November 12, 1997 (10)
       (bb)   Articles Supplementary dated April 3, 1998 (filed herewith)

     2        Bylaws, as amended February 11, 1999 (filed herewith)
    
     3        SPECIMEN CERTIFICATES FOR SHARES OF
        (a)   Growth Fund (1)
        (b)   Income Fund (1)
        (c)   Money Market Fund (1)
        (d)   Aggressive Growth Fund (1)
        (e)   Income Stock Fund (1)
        (f)   Growth & Income Fund (1)
        (g)   Short-Term Bond Fund (1)
        (h)   S&P 500 Index Fund (4)
        (i)   Science & Technology Fund (9)
        (j)   First Start Growth Fund (9)

     4  (a)   Advisory Agreement dated September 21, 1990 (1)
        (b)   Letter  Agreement dated June 1, 1993 adding Growth & Income Fund
               and Short-Term Bond Fund (1)
        (c)   Management  Agreement  dated May 1, 1996 with  respect to the S&P
               500 Index Fund (5)
        (d)   Administration  Agreement  dated May 1, 1996 with  respect to the
               S&P 500 Index Fund (5)
        (e)   Letter  Agreement to the Management  Agreement  dated May 1, 1996
               with respect to the S&P 500 Index Fund (5)

                                      C-1
<PAGE>

    EXHIBIT NO.                       EXHIBITS
    -----------                       --------

        (f)   Amendment  to  Administration  Agreement  dated  May 1, 1997 with
               respect to the S&P 500 Index Fund (7)
        (g)   Letter Agreement to the Advisory  Agreement dated August 1, 1997
               adding the Science & Technology Fund and First Start Growth Fund
               (9)

     5  (a)   Underwriting Agreement dated July 25, 1990 (1)
        (b)   Letter  Agreement  dated June 1, 1993 adding Growth & Income Fund
               and Short-Term Bond Fund (1)
        (c)   Letter Agreement dated May 1, 1996 adding S&P 500 Index Fund (5)
        (d)   Letter Agreement dated August 1, 1997 adding Science & Technology
               Fund and First Start Growth Fund (9)

     6        Not Applicable

     7  (a)   Custodian Agreement dated November 3, 1982 (1) 
        (b)   Letter  Agreement  dated April 20, 1987 adding  Income Stock Fund
               (1)
        (c)   Amendment No. 1 to the Custodian  Contract dated October 30, 1987
               (1)
        (d)   Amendment to the Custodian Contract dated November 3, 1988 (1)
        (e)   Amendment to the Custodian Contract dated February 6, 1989 (1)
        (f)   Amendment to the Custodian Contract dated November 8, 1993 (1)
        (g)   Letter  Agreement  dated June 1, 1993 adding Growth & Income Fund
               and Short-Term Bond Fund (1)
        (h)   Subcustodian  Agreement  dated March 24, 1994 (3) (i)  Custodian
               Agreement  dated May 1, 1996 with  respect  to the S&P 500 Index
               Fund (5)
        (j)   Subcustodian Agreement dated May 1, 1996 with respect to the S&P
               500 Index Fund (5)
        (k)   Letter  Agreement to the Custodian  Agreement  dated May 1, 1996
               with  respect  to the S&P 500 Index  Fund (5) (l)  Amendment  to
               Custodian Contract dated May 13, 1996 (5)
        (m)   Letter Agreement to the Custodian Agreement dated August 1, 1997
               with  respect to the Science &  Technology  Fund and First Start
               Growth Fund (9)
   
     8  (a)   Articles of Merger dated January 30, 1981 (1)
        (b)   Transfer Agency Agreement dated January 23, 1992 (1)
        (c)   Letter Agreement dated June 1, 1993 to Transfer Agency Agreement
               adding Growth & Income Fund and Short-Term Bond Fund (1)
        (d)   Amendments  dated May 3, 1995 to the Transfer  Agency  Agreement
               Fee Schedules for Growth Fund,  Aggressive  Growth Fund,  Income
               Fund,  Growth & Income  Fund,  Income  Stock Fund,  Money Market
               Fund, and Short-Term Bond Fund (1)
        (e)   Amendment No. 1 to Transfer Agency  Agreement dated November 14,
               1995 (2)
        (f)   Third Party Feeder Fund Agreement dated May 1, 1996 with respect
               to the S&P 500 Index Fund (5)
        (g)   Letter  Agreement to Transfer Agency Agreement dated May 1, 1996
               adding S&P 500 Index Fund (5)
        (h)   Transfer Agency Agreement Fee Schedule dated May 1, 1996 for S&P
               500 Index Fund (5)
        (i)   Master  Revolving  Credit  Facility  Agreement with USAA Capital
               Corporation  dated  January  12,  1999   ($500,000,000)   (filed
               herewith)
                                      C-2
<PAGE>

    EXHIBIT NO.                       EXHIBITS
    -----------                       --------

        (j)   Master Revolving  Credit Facility  Agreement with NationsBank of
               Texas dated January 13, 1999 (filed herewith)
        (k)   Letter  Agreement to Transfer  Agency  Agreement dated August 1,
               1997 adding  Science &  Technology  Fund and First Start  Growth
               Fund (9)
        (l)   Transfer Agency  Agreement Fee Schedule for Science & Technology
               Fund (9)
        (m)   Transfer  Agency  Agreement  Fee Schedule for First Start Growth
               Fund (9)
        (n)   Master  Revolving  Credit  Facility  Agreement with USAA Capital
               Corporation  dated  January  12,  1999   ($250,000,000)   (filed
               herewith)

     9  (a)   Opinion of Counsel with  respect to the Growth Fund,  Income
               Fund,  Money  Market Fund,  Income  Stock Fund,  Growth & Income
               Fund, and Short-Term Bond Fund (2)
        (b)    Opinion and Consent of Counsel with respect to the S&P 500 Index
               Fund (filed herewith)
        (c)   Opinion of Counsel with respect to the Aggressive Growth Fund (6)
        (d)   Consent of Counsel with respect to the  Aggressive  Growth Fund,
               Growth  Fund,  Growth & Income Fund,  Income Stock Fund,  Income
               Fund,  Short-Term  Bond  Fund,  Money  Market  Fund,  Science  &
               Technology Fund, and First Start Growth Fund (12)
        (e)   Opinion of Counsel with respect to the Science & Technology Fund
               and First Start Growth Fund (8)
    
    10        Independent Accountants' Consent (filed herewith)

    11        Omitted financial statements - Not Applicable

    12        SUBSCRIPTIONS AND INVESTMENT LETTERS
        (a)   Subscription and Investment  Letter for Growth & Income Fund and
               Short-Term Bond Fund (1)
        (b)   Subscription and Investment Letter for S&P 500 Index Fund (5)
        (c)   Subscription and Investment Letter for Science & Technology Fund
               and First Start Growth Fund (9)

    13        12b-1 Plans - Not Applicable
   
    14        FINANCIAL DATA SCHEDULES
        (a)   S&P 500 Index Fund (filed herewith)
    
    15        Plan Adopting Multiple Classes of Shares - Not Applicable
   
    16        POWERS OF ATTORNEY
        (a)   Powers of Attorney for Michael J.C. Roth,  Sherron A. Kirk, John
               W. Saunders,  Jr., George E. Brown, Howard L. Freeman,  Jr., and
               Richard A. Zucker dated November 8, 1993 (1)
        (b)   Power of Attorney for Barbara B.  Dreeben  dated  September  12,
               1995 (1)
        (c)   With  respect to the S&P 500 Index Fund,  Powers of Attorney for
               Ronald M. Petnuch,  Philip W.  Coolidge,  Charles P. Biggar,  S.
               Leland Dill, and Philip  Saunders,  Jr.,  Trustees of the Equity
               500 Index Portfolio, dated September 30, 1996 (7)
        (d)   Power of Attorney for Robert G. Davis dated March 24, 1997 (7)
        (e)   Power of Attorney for Robert L. Mason dated March 24, 1997 (7)

                                      C-3
<PAGE>
        (f)   With  respect to the S&P 500 Index Fund,  Powers of Attorney for
               John Y. Keffer and Joseph A. Finelli, Trustees of the Equity 500
               Index Portfolio, dated December 31, 1998 (filed herewith)
    
- ------------------
(1)  Previously  filed with  Post-Effective  Amendment No. 38 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     September 29, 1995.

(2)  Previously  filed with  Post-Effective  Amendment No. 39 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     November 21, 1995.

(3)  Previously  filed with  Post-Effective  Amendment No. 40 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     February 15, 1996.

(4)  Previously  filed with  Post-Effective  Amendment No. 41 of the Registrant
     (No.  2-49560) filed with the Securities and Exchange  Commission on April
     26, 1996.

(5)  Previously  filed with  Post-Effective  Amendment No. 42 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     September 11, 1996.

(6)  Previously  filed with  Post-Effective  Amendment No. 43 of the Registrant
     (No. 2-49560) filed with the Securities and Exchange Commission on October
     1, 1996.

(7)  Previously  filed with  Post-Effective  Amendment No. 44 of the Registrant
     (No.  2-49560) filed with the Securities and Exchange  Commission on April
     21, 1997.

(8)  Previously  filed with  Post-Effective  Amendment No. 45 of the Registrant
     (No. 2-49560) filed with the Securities and Exchange Commission on May 16,
     1997.

(9)  Previously  filed with  Post-Effective  Amendment No. 46 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     September 30, 1997.

(10) Previously  filed with  Post-Effective  Amendment No. 47 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     February 26, 1998.

(11) Previously  filed with  Post-Effective  Amendment No. 48 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     February 27, 1998.
   
(12) Previously  filed with  Post-Effective  Amendment No. 49 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     September 30, 1998.
    
                                      C-4
<PAGE>

Item 24.      PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH FUND
   
              Information  pertaining to persons  controlled by or under common
              control with  Registrant is hereby  incorporated  by reference to
              the section  captioned  "Fund and  Portfolio  Management"  in the
              Prospectus and the section  captioned  "Directors and Officers of
              the Company" in the Statement of Additional Information.
    
Item 25.      INDEMNIFICATION

              Protection for the liability of the adviser and  underwriter  and
              for the officers and  directors of the  Registrant is provided by
              two methods:

        (a)   THE DIRECTOR AND OFFICER LIABILITY POLICY. This policy covers all
              losses   incurred  by  the   Registrant,   its  adviser  and  its
              underwriter from any claim made against those entities or persons
              during the policy period by any shareholder or former shareholder
              of the Fund by  reason of any  alleged  negligent  act,  error or
              omission  committed in connection with the  administration of the
              investments of said  Registrant or in connection with the sale or
              redemption of shares issued by said Registrant.

        (b)   STATUTORY INDEMNIFICATION PROVISIONS.  Under Section 2-418 of the
              Maryland General Corporation Law, the Registrant is authorized to
              indemnify  any  past  or  present  director,  officer,  agent  or
              employee against  judgments,  penalties,  fines,  settlements and
              reasonable  expenses  actually incurred by him in connection with
              any  proceeding in which he is a party by reason of having served
              as a director,  officer,  agent or employee,  if he acted in good
              faith and reasonably believed that, (i) in the case of conduct in
              his official  capacity with the Registrant,  that his conduct was
              in the best  interests  of the  Registrant,  or (ii) in all other
              cases,  that his  conduct  was at least not  opposed  to the best
              interests  of  the  Registrant.  In  the  case  of  any  criminal
              proceeding,  said  director,  officer,  agent or employee must in
              addition have had no reasonable cause to believe that his conduct
              was  unlawful.  In the case of a proceeding by or in the right of
              the  Registrant,   indemnification   may  only  be  made  against
              reasonable  expenses  and  may  not be  made  in  respect  of any
              proceeding  in which the  director,  officer,  agent or  employee
              shall  have been  adjudged  to be liable to the  Registrant.  The
              termination  of any  proceeding by judgment,  order,  settlement,
              conviction,  or upon a plea of nolo  contendere or its equivalent
              creates a  rebuttable  presumption  that the  director,  officer,
              agent or employee did not meet the requisite  standard of conduct
              for indemnification. No indemnification may be made in respect of
              any  proceeding   charging   improper  personal  benefit  to  the
              director,  officer,  agent or employee  whether or not  involving
              action in such  person's  official  capacity,  if such person was
              adjudged to be liable on the basis that improper personal benefit
              was received.  If such  director,  officer,  agent or employee is
              successful,  on the merits or  otherwise,  in defense of any such
              proceeding  against  him,  he shall be  indemnified  against  the
              reasonable expenses incurred by him (unless such  indemnification
              is  limited  by  the  Registrant's  charter,  which  it is  not).
              Additionally,  a court  of  appropriate  jurisdiction  may  order
              indemnification in certain  circumstances even if the appropriate
              standard of conduct set forth above was not met.

                                      C-5
<PAGE>
              Indemnification may not be made unless authorized in the specific
              case after  determination that the applicable standard of conduct
              has been met. Such determination shall be made by either: (i) the
              board of  directors  by either  (x) a  majority  vote of a quorum
              consisting of directors  not parties to the  proceeding or (y) if
              such a quorum  cannot be obtained,  then by a majority  vote of a
              committee of the board consisting solely of two or more directors
              not  at the  time  parties  to  such  proceeding  who  were  duly
              designated  to act in the matter by a  majority  vote of the full
              board in which  the  designated  directors  who are  parties  may
              participate;  (ii) special legal counsel selected by the board of
              directors or a committee of the board by vote as set forth in (i)
              above,  or,  if the  requisite  quorum  of the  board  cannot  be
              obtained therefore and the committee cannot be established,  by a
              majority  vote of the  full  board  in  which  directors  who are
              parties may participate; or (iii) the stockholders.

              Reasonable  expenses may be reimbursed or paid by the  Registrant
              in  advance  of  final   disposition  of  a  proceeding  after  a
              determination,  made in accordance  with the procedures set forth
              in the  preceding  paragraph,  that the facts then known to those
              making the determination would not preclude indemnification under
              the applicable  standards provided the Registrant  receives (i) a
              written  affirmation  of the  good  faith  belief  of the  person
              seeking  indemnification  that the applicable standard of conduct
              necessary  for  indemnification  has been met, and (ii) a written
              undertaking  to  repay  the  advanced  sums  if it is  ultimately
              determined  that the applicable  standard of conduct has not been
              met.

              Insofar as  indemnification  for  liabilities  arising  under the
              Securities  Act of 1933 may be permitted to  directors,  officers
              and  controlling  persons  of  the  Registrant  pursuant  to  the
              Registrant's   Articles  of  Incorporation   or  otherwise,   the
              Registrant   has  been  advised  that,  in  the  opinion  of  the
              Securities  and  Exchange  Commission,  such  indemnification  is
              against public policy as expressed in the Act and is,  therefore,
              unenforceable.  In the  event  that a claim  for  indemnification
              against  such   liabilities   (other  than  the  payment  by  the
              Registrant of expenses incurred or paid by a director, officer or
              controlling person of the Registrant in the successful defense of
              any action,  suit or  proceeding)  is asserted by such  director,
              officer or controlling  person in connection  with the securities
              being registered, then the Registrant will, unless in the opinion
              of its  counsel  the  matter has been  settled  by a  controlling
              precedent,  submit  to a court of  appropriate  jurisdiction  the
              question  of  whether  indemnification  by it is  against  public
              policy as  expressed in the Act and will be governed by the final
              adjudication of such issue.

Item 26.      BUSINESS AND OTHER CONNECTIONS OF THE INVESTMENT ADVISER
   
              Information  pertaining to business and other  connections of the
              Registrant's   investment  adviser  is  hereby   incorporated  by
              reference to the section of the  Prospectus  captioned  "Fund and
              Portfolio  Management"  and to the  section of the  Statement  of
              Additional  Information  captioned "Directors and Officers of the
              Company."
    
                                      C-6
<PAGE>
Item 27.      PRINCIPAL UNDERWRITERS

        (a)   USAA  Investment  Management  Company  (the  "Adviser")  acts  as
              principal  underwriter and distributor of the Registrant's shares
              on a best-efforts basis and receives no fee or commission for its
              underwriting  services.  The  Adviser,   wholly-owned  by  United
              Services  Automobile   Association,   also  serves  as  principal
              underwriter  for USAA Tax  Exempt  Fund,  Inc.,  USAA  Investment
              Trust, and USAA State Tax-Free Trust.

        (b)   Set forth  below is  information  concerning  each  director  and
              executive officer of USAA Investment Management Company.

Name and Principal        Position and Offices           Position and Offices
 BUSINESS ADDRESS           WITH UNDERWRITER               WITH REGISTRANT
- ------------------        --------------------           --------------------

Robert G. Davis           Director and Chairman          Director and
9800 Fredericksburg Road  of the Board of                Chairman of the
San Antonio, TX  78288    Directors                      Board of Directors

Michael J.C. Roth         Chief Executive Officer,       President, Director
9800 Fredericksburg Road  President, Director, and       and Vice Chairman of
San Antonio, TX  78288    Vice Chairman of the           the Board of Directors
                          Board of Directors

John W. Saunders, Jr.     Senior Vice President,         Vice President and
9800 Fredericksburg Road  Fixed Income Investments,      Director
San Antonio, TX  78288    and Director
   
David G. Peebles          Senior Vice President,         None
9800 Fredericksburg Road  Equity Investments
San Antonio, TX  78288
    
John J. Dallahan          Senior Vice President,         None
9800 Fredericksburg Road  Investment Services
San Antonio, TX  78288

Carl W. Shirley           Senior Vice President,         None
9800 Fredericksburg Road  Insurance Company Portfolios
San Antonio, TX  78288

Michael D. Wagner         Vice President, Secretary      Secretary
9800 Fredericksburg Road  and Counsel
San Antonio, TX  78288

Sherron A. Kirk           Vice President and             Treasurer
9800 Fredericksburg Road  Senior Financial Officer
San Antonio, TX  78288    

Alex M. Ciccone           Vice President,                Assistant
9800 Fredericksburg Road  Compliance                     Secretary
San Antonio, TX 78288

     (c)    Not Applicable

                                      C-7
<PAGE>
Item 28.      LOCATION OF ACCOUNTS AND RECORDS

              The following entities prepare, maintain and preserve the records
              required by Section 31(a) of the  Investment  Company Act of 1940
              (the "1940 Act") for the Registrant.  These services are provided
              to the Registrant  through written agreements between the parties
              to  the  effect  that  such  services  will  be  provided  to the
              Registrant   for  such  periods   prescribed  by  the  Rules  and
              Regulations of the Securities and Exchange  Commission  under the
              1940 Act and such records are the property of the entity required
              to maintain  and preserve  such  records and will be  surrendered
              promptly on request:

                    USAA Investment Management Company
                    9800 Fredericksburg Road
                    San Antonio, Texas 78288

                    USAA Shareholder Account Services
                    10750 Robert F. McDermott Freeway
                    San Antonio, Texas 78288

                    State Street Bank and Trust Company
                    1776 Heritage Drive
                    North Quincy, Massachusetts 02171

Item 29.      MANAGEMENT SERVICES

              Not Applicable

Item 30.      UNDERTAKINGS

              None

                                      C-8
<PAGE>
                                   SIGNATURES
   
     Pursuant to the  requirements  of the  Securities  Act and the  Investment
Company Act, the Registrant certifies that it has duly caused this amendment to
its  registration  statement  to be  signed on its  behalf by the  undersigned,
thereunto duly authorized, in the City of San Antonio and State of Texas on the
11th day of February 1999.

                                                         USAA MUTUAL FUND, INC.


                                                         /s/ MICHAEL J.C. ROTH
                                                         ----------------------
                                                         Michael J.C. Roth
                                                         President
    

     Pursuant to the  requirements of the Securities Act, this amendment to its
Registration  Statement has been signed below by the  following  persons in the
capacities and on the date(s) indicated.

   (Signature)                    (Title)                          (Date)

   
                              Chairman of the
/s/ ROBERT G. DAVIS           Board of Directors              February 11, 1999
- --------------------------
Robert G. Davis

                              Vice Chairman of the Board
/s/ MICHAEL J.C. ROTH         of Directors and President      February 11, 1999
- --------------------------    (Principal Executive Officer)
Michael J.C. Roth

                              Treasurer (Principal
/s/ SHERRON A. KIRK           Financial and                   February 11, 1999
- --------------------------    Accounting Officer)
Sherron A. Kirk


/s/ JOHN W. SAUNDERS, JR.     Director                        February 11, 1999
- --------------------------
John W. Saunders, Jr.


/s/ ROBERT L. MASON           Director                        February 11, 1999
- --------------------------
Robert L. Mason


/s/ HOWARD L. FREEMAN, JR.    Director                        February 11, 1999
- --------------------------
Howard L. Freeman, Jr.


/s/ RICHARD A. ZUCKER         Director                        February 11, 1999
- --------------------------
Richard A. Zucker


/s/ BARBARA B. DREEBEN        Director                        February 11, 1999
- --------------------------
Barbara B. Dreeben
    

                                      C-9
<PAGE>
                                   SIGNATURES
   
     Equity 500 Index Portfolio has duly caused this  Post-Effective  Amendment
No. 50 to the Registration  Statement on Form N-1A of USAA Mutual Fund, Inc. to
be signed on its behalf by the undersigned,  thereunto duly authorized,  in the
City of Baltimore and State of Maryland on the 22nd day of February, 1999.

EQUITY 500 INDEX PORTFOLIO

             By: John Y. Keffer*
                 President

     This Post Effective Amendment No. 50 to the Registration Statement on Form
N-1A of USAA Mutual Fund,  Inc. has been signed below by the following  persons
in the  capacities  indicated  with  respect to Equity 500 Index  Portfolio  on
February 22nd, 1999.
    
SIGNATURE                                 TITLE


Charles P. Biggar*                        Trustee


Philip Saunders, Jr.*                     Trustee


S. Leland Dill*                           Trustee

   
John Y. Keffer*                           President and Chief Executive Officer


Joseph A. Finelli*                        Treasurer and Principal Financial
                                           and Accounting Officer



*By   /s/ DANIEL O. HIRSCH
    -------------------------
    Daniel O. Hirsch, Secretary of Equity 500 Index Portfolio,
      As Attorney-in-Fact pursuant to a Power of Attorney.
    
                                     C-10
<PAGE>
                                 EXHIBIT INDEX

    EXHIBIT                           ITEM                           PAGE NO. *
    -------                           ----                           ----------
   
    1   (a)   Articles of Incorporation dated October 10, 1980 (1)
        (b)   Articles of Amendment dated January 14, 1981 (1)
        (c)   Articles Supplementary dated July 28, 1981 (1)
        (d)   Articles Supplementary dated November 3, 1982 (1)
        (e)   Articles of Amendment dated May 18, 1983 (1)
        (f)   Articles Supplementary dated August 8, 1983 (1)
        (g)   Articles Supplementary dated July 27, 1984 (1)
        (h)   Articles Supplementary dated November 5, 1985 (1)
        (i)   Articles Supplementary dated January 23, 1987 (1)
        (j)   Articles Supplementary dated May 13, 1987 (1)
        (k)   Articles Supplementary dated January 25, 1989 (1)
        (l)   Articles Supplementary dated May 2, 1991 (1)
        (m)   Articles Supplementary dated November 14, 1991 (1)
        (n)   Articles Supplementary dated April 14, 1992 (1)
        (o)   Articles Supplementary dated November 4, 1992 (1)
        (p)   Articles Supplementary dated March 23, 1993 (1)
        (q)   Articles Supplementary dated May 5, 1993 (1)
        (r)   Articles Supplementary dated November 8, 1993 (1)
        (s)   Articles Supplementary dated January 18, 1994 (1)
        (t)   Articles Supplementary dated November 9, 1994 (1)
        (u)   Articles Supplementary dated November 8, 1995 (2)
        (v)   Articles Supplementary dated February 6, 1996 (3)
        (w)   Articles Supplementary dated March 12, 1996 (4)
        (x)   Articles Supplementary dated November 13, 1996 (7)
        (y)   Articles Supplementary dated May 9, 1997 (8)
        (z)   Articles of Amendment dated July 9, 1997 (9)
        (aa)  Articles Supplementary dated November 12, 1997 (10)
        (bb)  Articles  Supplementary  dated April 3, 1998 (filed
              herewith                                                    74

    2   Bylaws, as amended February 11, 1999 (filed herewith)             79
    

    3   SPECIMEN CERTIFICATES FOR SHARES OF
        (a)   Growth Fund (1)
        (b)   Income Fund (1)
        (c)   Money Market Fund (1)
        (d)   Aggressive Growth Fund (1)
        (e)   Income Stock Fund (1)
        (f)   Growth & Income Fund (1)
        (g)   Short-Term Bond Fund (1)
        (h)   S&P 500 Index Fund (4)
        (i)   Science & Technology Fund (9)
        (j)   First Start Growth Fund (9)

    4   (a)   Advisory  Agreement  dated  September 21, 1990 (1) 
        (b)   Letter  Agreement dated June 1, 1993 adding Growth
               & Income Fund and Short-Term Bond Fund (1)
        (c)   Management   Agreement  dated  May  1,  1996  with
               respect to the S&P 500 Index Fund (5)
        (d)   Administration  Agreement  dated  May 1, 1996 with
               respect to the S&P 500 Index Fund (5)
        (e)   Letter Agreement to the Management Agreement dated
               May 1, 1996 with respect to the S&P 500 Index Fund
               (5)

                                      C-11
<PAGE>
    EXHIBIT                           ITEM                           PAGE NO. *
    -------                           ----                       

        (f)   Amendment to Administration Agreement dated May 1,
               1997 with respect to the S&P 500 Index Fund (7)
        (g)   Letter  Agreement to the Advisory  Agreement dated
               August 1, 1997 adding  Science &  Technology  Fund
               and First Start Growth Fund (9)

    5   (a)   Underwriting  Agreement  dated July 25, 1990 (1) 
        (b)   Letter  Agreement dated June 1, 1993 adding Growth
               & Income Fund and Short-Term Bond Fund (1)
        (c)   Letter  Agreement dated May 1, 1996 adding S&P 500
               Index Fund (5)
        (d)   Letter  Agreement  dated  August  1,  1997  adding
               Science &  Technology  Fund and First Start Growth
               Fund (9)

    6         Not Applicable

    7   (a)   Custodian Agreement dated November 3, 1982 (1)
        (b)   Letter  Agreement  dated  April  20,  1987  adding
               Income Stock Fund (1)
        (c)   Amendment  No. 1 to the Custodian  Contract  dated
               October 30, 1987 (1)
        (d)   Amendment to the Custodian Contract dated November
               3, 1988 (1)
        (e)   Amendment to the Custodian Contract dated February
               6, 1989 (1)
        (f)   Amendment to the Custodian Contract dated November
               8, 1993 (1)
        (g)   Letter  Agreement dated June 1, 1993 adding Growth
               & Income Fund and Short-Term Bond Fund (1)
        (h)   Subcustodian Agreement dated March 24, 1994 (3)
        (i)   Custodian Agreement dated May 1, 1996 with respect
               to the S&P 500 Index Fund (5)
        (j)   Subcustodian  Agreement  dated  May 1,  1996  with
               respect to the S&P 500 Index Fund (5)
        (k)   Letter Agreement to the Custodian  Agreement dated
               May 1, 1996 with respect to the S&P 500 Index Fund
               (5)
        (l)   Amendment to Custodian Contract dated May 13, 1996
               (5)
        (m)   Letter Agreement to the Custodian  Agreement dated
               August  1,  1997  with  respect  to the  Science &
               Technology Fund and First Start Growth Fund (9)
   
    8   (a)   Articles of Merger dated  January 30, 1981 (1) 
        (b)   Transfer  Agency  Agreement dated January 23, 1992
               (1)
        (c)   Letter  Agreement  dated June 1, 1993 to  Transfer
               Agency  Agreement  adding Growth & Income Fund and
               Short-Term Bond Fund (1)
        (d)   Amendments  dated  May 3,  1995  to  the  Transfer
               Agency  Agreement  Fee  Schedules for Growth Fund,
               Aggressive  Growth  Fund,  Income  Fund,  Growth &
               Income Fund, Income Stock Fund, Money Market Fund,
               and Short-Term Bond Fund (1)
        (e)   Amendment No. 1 to Transfer Agency Agreement dated
               November 14, 1995(2)
        (f)   Third  Party  Feeder Fund  Agreement  dated May 1,
               1996 with respect to the S&P 500 Index Fund (5)
        (g)   Letter  Agreement  to  Transfer  Agency  Agreement
               dated May 1, 1996 adding S&P 500 Index Fund (5)
        (h)   Transfer  Agency  Agreement Fee Schedule dated May
               1, 1996 for S&P 500 Index Fund (5)

                                C-12
<PAGE>
    EXHIBIT                           ITEM                           PAGE NO. *
    -------                           ----                           ----------

        (i)   Master  Revolving  Credit Facility  Agreement with
               USAA Capital  Corporation  dated  January 12, 1999
               ($500,000,000) (filed herewith)                            91
        (j)   Master  Revolving  Credit Facility  Agreement with
               NationsBank of Texas dated January 13, 1999 (filed
               herewith)                                                 114
        (k)   Letter  Agreement  to  Transfer  Agency  Agreement
               dated  August 1, 1997 adding  Science & Technology
               Fund and First Start Growth Fund (9)
        (l)   Transfer Agency Agreement Fee Schedule for Science
               & Technology Fund (9)
        (m)   Transfer  Agency  Agreement Fee Schedule for First
               Start Growth Fund (9)
        (n)   Master  Revolving  Credit Facility  Agreement with
               USAA Capital  Corporation  dated  January 12, 1999
               ($250,000,000) (filed herewith)                           139

    9   (a)   Opinion of Counsel  with respect to the Growth
               Fund, Income Fund, Money Market Fund, Income Stock
               Fund,  Growth & Income Fund, and  Short-Term  Bond
               Fund (2)
        (b)   Opinion and Consent of Counsel  with respect to the
               S&P 500 Index Fund (filed herewith)                       162
        (c)   Opinion of Counsel with respect to the  Aggressive
               Growth Fund (6)
        (d)   Consent of  Counsel  with  respect  to the  Aggressive
               Growth Fund,  Growth  Fund,  Growth & Income Fund,
               Income Stock Fund,  Income Fund,  Short-Term  Bond
               Fund,  Money  Market  Fund,  Science &  Technology
               Fund, and First Start Growth Fund (12)
        (e)   Opinion of Counsel  with  respect to the Science &
               Technology Fund and First Start Growth Fund (8)

    10        Independent Accountants' Consent (filed herewith)          164
    
    11        Omitted financial statements - Not Applicable

    12        SUBSCRIPTIONS AND INVESTMENT LETTERS
        (a)   Subscription  and  Investment  Letter for Growth &
               Income Fund and Short-Term Bond Fund (1)
        (b)   Subscription  and  Investment  Letter  for S&P 500
               Index  Fund (5) 
        (c)   Subscription  and Investment  Letter for Science &
               Technology Fund and First Start Growth Fund (9)

    13        12b-1 Plans - Not Applicable
   
    14        FINANCIAL DATA SCHEDULES
        (a)   S&P 500 Index Fund (filed herewith)                        166
    
    15        Plan Adopting Multiple Classes of Shares - Not Applicable

                               C-13
<PAGE>
    EXHIBIT                           ITEM                           PAGE NO. *
    -------                           ----                           ----------
   
    16        POWERS OF ATTORNEY
        (a)   Powers of Attorney for Michael J.C. Roth,  Sherron
               A. Kirk,  John W. Saunders,  Jr., George E. Brown,
               Howard L.  Freeman,  Jr.,  and  Richard A.  Zucker
               dated November 8, 1993 (1)
        (b)   Power of  Attorney  for Barbara B.  Dreeben  dated
               September 12, 1995 (1)
        (c)   With respect to the S&P 500 Index Fund,  Powers of
               Attorney   for  Ronald  M.   Petnuch,   Philip  W.
               Coolidge,  Charles P.  Biggar,  Leland  Dill,  and
               Philip Saunders,  Jr.,  Trustees of the Equity 500
               Index Portfolio, dated September 30, 1996 (7)
        (d)   Power of Attorney  for Robert G. Davis dated March
               24, 1997 (7)
        (e)   Power of Attorney  for Robert L. Mason dated March
               24, 1997 (7)
        (f)   With respect to the S&P 500 Index Fund, Powers of 
               Attorney for John Y. Keffer and Joseph A. Finelli, 
               Trustees of the Equity 500 Index Portfolio, dated 
               December 31, 1998 (filed herewith)                        168
    
- ---------------
(1)  Previously  filed with  Post-Effective  Amendment No. 38 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     September 29, 1995.

(2)  Previously  filed with  Post-Effective  Amendment No. 39 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     November 21, 1995.

(3)  Previously  filed with  Post-Effective  Amendment No. 40 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     February 15, 1996.

(4)  Previously  filed with  Post-Effective  Amendment No. 41 of the Registrant
     (No.  2-49560) filed with the Securities and Exchange  Commission on April
     26, 1996.

(5)  Previously  filed with  Post-Effective  Amendment No. 42 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     September 11, 1996.

(6)  Previously  filed with  Post-Effective  Amendment No. 43 of the Registrant
     (No. 2-49560) filed with the Securities and Exchange Commission on October
     1, 1996.

(7)  Previously  filed with  Post-Effective  Amendment No. 44 of the Registrant
     (No.  2-49560) filed with the Securities and Exchange  Commission on April
     21, 1997.

(8)  Previously  filed with  Post-Effective  Amendment No. 45 of the Registrant
     (No. 2-49560) filed with the Securities and Exchange Commission on May 16,
     1997.

(9)  Previously  filed with  Post-Effective  Amendment No. 46 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     September 30, 1997.

                                      C-14
<PAGE>

(10) Previously  filed with  Post-Effective  Amendment No. 47 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     February 26, 1998.

(11) Previously  filed with  Post-Effective  Amendment No. 48 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     February 27, 1998.
   
(12) Previously  filed with  Post-Effective  Amendment No. 49 of the Registrant
     (No.  2-49560)  filed  with the  Securities  and  Exchange  Commission  on
     September 30, 1998.
    
- -------------------------
    * Refers to sequentially numbered pages

                                      C-15
<PAGE>

                                 EXHIBIT 1(bb)

<PAGE>

                             USAA MUTUAL FUND, INC.

                             ARTICLES SUPPLEMENTARY


       USAA Mutual Fund,  Inc., a Maryland  Corporation,  having its  principal
office in San Antonio, Texas (the "Corporation"), hereby certifies to the State
Department of Assessments and Taxation of Maryland that:

       FIRST: The Corporation is registered as an open-end  investment  company
under the Investment Company Act of 1940.

       SECOND:  (a) In accordance with Section 2-105(c) of the Maryland General
Corporation  Law, the Board of Directors  hereby increases the aggregate number
of shares of capital stock that the Corporation has the authority to issue from
5,000,000,000 shares of capital stock to 20,000,000,000 shares of capital stock
($.01 par value per share).

                (b) In accordance with Section 2-105(c) of the Maryland General
Corporation  Law and  pursuant to  authority  expressly  vested in the Board of
Directors by the Articles of  Incorporation  of the  Corporation,  the Board of
Directors  hereby  increases  the  aggregate  number  of shares of stock of the
Corporation's  classes of shares by classifying an additional 50,000,000 shares
of the authorized and unissued stock of the  Corporation  into the Growth Fund,
an additional  5,000,000  shares of the  authorized  and unissued  stock of the
Corporation into the Aggressive Growth Fund, an additional  115,000,000  shares
of the authorized and unissued stock of the  Corporation  into the Income Stock
Fund, an additional  70,000,000  shares of the authorized and unissued stock of
the Corporation into the Income Fund, an additional 1,700,000,000 shares of the
authorized and unissued stock of the Corporation into the Money Market Fund, an
additional  95,000,000  shares  of the  authorized  and  unissued  stock of the
Corporation into the Short-Term Bond Fund, an additional  35,000,000  shares of
the authorized and unissued stock of the  Corporation  into the Growth & Income
Fund, an additional  100,000,000 shares of the authorized and unissued stock of
the Corporation into the S&P 500 Index Fund, an additional 80,000,000 shares of
the  authorized  and  unissued  stock of the  Corporation  into the  Science  &
Technology  Fund and an  additional  70,000,000  shares of the  authorized  and
unissued stock of the Corporation into the First Start Growth Fund.

       THIRD: The additional shares of the Growth Fund, Aggressive Growth Fund,
Income Stock Fund, Income Fund, Money Market Fund, Short-Term Bond Fund, Growth
& Income Fund,  S&P 500 Index Fund,  Science & Technology  Fund and First Start
Growth Fund shall have the preferences,  rights,  voting powers,  restrictions,
limitations  as to dividends,  qualifications,  and terms and conditions as are
described in Article VI of the Articles of Incorporation.
<PAGE>
       FOURTH:  (a)Before the increase in the total number of shares classified
as shares of the Growth Fund, Aggressive Growth Fund, Income Stock Fund, Income
Fund,  Money Market Fund,  Short-Term Bond Fund,  Growth & Income Fund, S&P 500
Index Fund,  Science & Technology Fund and First Start Growth Fund,  there were
classified  100,000,000  shares of the Growth  Fund,  50,000,000  shares of the
Aggressive  Growth  Fund,   135,000,000   shares  of  the  Income  Stock  Fund,
200,000,000 shares of the Income Fund, 3,000,000,000 shares of the Money Market
Fund,   250,000,000  shares  of  the  Federal  Securities  Money  Market  Fund,
25,000,000 shares of the Short-Term Bond Fund,  75,000,000 shares of the Growth
& Income Fund,  75,000,000 shares of the S&P 500 Index Fund,  25,000,000 shares
of the  Science &  Technology  Fund and  25,000,000  shares of the First  Start
Growth Fund.

                (b) After the increase in the total number of shares classified
as shares of the Growth Fund, Aggressive Growth Fund, Income Stock Fund, Income
Fund,  Money Market Fund,  Short-Term Bond Fund,  Growth & Income Fund, S&P 500
Index Fund,  Science & Technology  Fund and First Start Growth Fund,  there are
classified  150,000,000  shares of the Growth  Fund,  55,000,000  shares of the
Aggressive  Growth  Fund,   250,000,000   shares  of  the  Income  Stock  Fund,
270,000,000 shares of the Income Fund, 4,700,000,000 shares of the Money Market
Fund,   250,000,000  shares  of  the  Federal  Securities  Money  Market  Fund,
120,000,000  shares of the  Short-Term  Bond  Fund,  110,000,000  shares of the
Growth & Income Fund, 175,000,000 shares of the S&P 500 Index Fund, 105,000,000
shares of the  Science &  Technology  Fund and  95,000,000  shares of the First
Start Growth Fund.

                (c) As of  immediately  before the  increase  in the  aggregate
number of shares of capital stock of the  Corporation,  the aggregate par value
of  all  shares  of  all  classes  of  stock  authorized  to be  issued  by the
Corporation  was  $50,000,000.  After the increase in the  aggregate  number of
shares of capital  stock of the  Corporation,  the  aggregate  par value of all
shares of all classes of stock  authorized to be issued by the  Corporation  is
$200,000,000.

<PAGE>

IN WITNESS  WHEREOF,  USAA Mutual Fund,  Inc.  has caused these  presents to be
signed in its name and on its  behalf by its  President  and  witnessed  by its
Secretary on April 3, 1998.

WITNESS:                                                 USAA MUTUAL FUND, INC.


/S/ MICHAEL D. WAGNER                                    /S/ MICHAEL J.C. ROTH
- ----------------------                                   ----------------------
Michael D. Wagner                                        Michael J. C. Roth
Secretary                                                President

<PAGE>

       THE  UNDERSIGNED,  President of USAA Mutual Fund,  Inc., who executed on
behalf of the Corporation the foregoing  Articles  Supplementary  of which this
certificate is made a part,  hereby  acknowledges  in the name and on behalf of
said Corporation the foregoing  Articles  Supplementary to be the corporate act
of said  Corporation  and hereby  certifies  that to the best of his knowledge,
information, and belief the matters and facts set forth therein with respect to
the  authorization and approval thereof are true in all material respects under
the penalties of perjury.


                                                         USAA MUTUAL FUND, INC.


                                                         /S/ MICHAEL J.C. ROTH
                                                         ----------------------
                                                         Michael J. C. Roth
                                                         President

contract\mf\articles\4-3-98funds


                                   EXHIBIT 2
<PAGE>
                                               13

                             USAA MUTUAL FUND, INC.

                                     BYLAWS

                          AS AMENDED FEBRUARY 11, 1999


                                   ARTICLE I

                                    OFFICES

       SECTION 1.1.  PRINCIPAL  OFFICE.  The principal office of the Company in
the State of Maryland shall be in the City of Baltimore, State of Maryland.

       SECTION 1.2.  OTHER  OFFICES.  The Company may also have offices at such
other  places  both  within and  without  the State of Maryland as the Board of
Directors  may from time to time  determine  or the business of the Company may
require, including without limitation offices at San Antonio, Texas.

                                   ARTICLE II

                                  SHAREHOLDERS

       SECTION 2.1. PLACE OF MEETINGS.  Meetings of shareholders  shall be held
at the offices of the Company in the State of  Maryland,  at the offices of the
Company in the City of San  Antonio,  Texas,  or at any other place  within the
United  States  as  shall  be  designated  from  time to time by the  Board  of
Directors and stated in the notice of meeting or in a duly  executed  waiver of
notice thereof.

       SECTION  2.2.  ANNUAL  MEETING.  The Company is not  required to hold an
annual  meeting  of its  stockholders  in any year in  which  the  election  of
directors is not required to be acted upon under the Investment  Company Act of
1940 (the "1940  Act").  If the  Company is  required by the 1940 Act to hold a
meeting of  stockholders  to elect  directors,  such meeting shall be held at a
date and time set by the Board of Directors in accordance with the 1940 Act and
no later than 120 days after the occurrence of the event requiring the meeting.
Any stockholders'  meeting held in accordance with the preceding sentence shall
for all purposes  constitute the annual meeting of stockholders  for the fiscal
year of the  Company  in which the  meeting is held.  Except as the  Charter or
statute provides otherwise, any business may be considered at an annual meeting
without the purpose of the meeting having been specified in the notice. Failure
to hold an annual meeting does not invalidate the Company's existence or affect
any otherwise valid corporate acts.

       SECTION 2.3. SPECIAL MEETINGS.  Special meetings of the shareholders may
be called by the Board of Directors or by the  President.  Special  meetings of
shareholders  shall be called by the  Secretary  upon the  written  request  of
holders of shares  entitled  to cast not less than TEN percent of all the votes
entitled to be cast at such  meeting.  Such request  shall state the purpose or
purposes of such meeting and the matters  proposed to be acted on thereat.  The
Secretary shall inform such requesting shareholders of the reasonably estimated
cost of preparing  and mailing such notice of the meeting and,  upon payment to
the Company of such costs,  the Secretary shall give notice stating the purpose
or  purposes  of the  meeting to all  shareholders  entitled  to notice of such
meeting.  No special  meeting  need be called to consider  any matter  which is
substantially  the same as a matter  voted upon at any  special  meeting of the
shareholders  held during the preceding  twelve months unless  requested by the
holders of shares  entitled to cast a majority of all votes entitled to be cast
at such meeting.

                                       1

<PAGE>

       SECTION 2.4.  NOTICE AND  PURPOSE.  Not less than ten (10) nor more then
ninety (90) days before the date of every shareholders'  meeting, the Secretary
shall give to each  shareholder  entitled to vote at such meeting,  and to each
shareholder not entitled to vote who is entitled by statute to notice,  written
or printed  notice stating the time and place of the meeting and the purpose or
purposes for which the meeting is called, either by mail or by presenting it to
him personally or by leaving it at his residence or usual place of business. If
mailed,  such notice  shall be deemed to be given when  deposited in the United
States mail  addressed  to the  shareholder  at his  post-office  address as it
appears on the records of the Company,  with postage thereon prepaid.  Business
transacted  at any  special  meeting  of  shareholders  shall be limited to the
purposes stated in the notice.

       SECTION 2.5. RECORD DATE. The Board of Directors may fix, in advance,  a
date as the record date for the purpose of determining shareholders entitled to
notice  of, or to vote at,  any  meeting  of  shareholders  or any  adjournment
thereof, or entitled to receive payment of any dividend or the allotment of any
rights,  or in order to make a  determination  of  shareholders  for any  other
proper purpose.  Such date in any case shall be not more than ninety (90) days,
and in case of a meeting of shareholders, not less than ten (10) days, prior to
the date on  which  the  particular  action  requiring  such  determination  of
shareholders is to be taken.

       SECTION 2.6. QUORUM. The holders of a majority of the shares entitled to
vote, represented in person or by proxy, shall constitute a quorum at a meeting
of the  shareholders,  but,  if a quorum  is not  represented,  a  majority  in
interest  of those  represented  may  adjourn  the  meeting  from time to time,
without notice other than announcement at the meeting,  until a quorum shall be
present or represented.  At such adjourned meeting,  at which a quorum shall be
present or  represented,  any business may be transacted  which might have been
transacted at the meeting as originally notified.

       SECTION 2.7. VOTING.  Any holder of shares of the Fund shall be entitled
to  vote to the  extent  provided  in  subsection  6.2(f)  of the  Articles  of
Incorporation,  either  in  person or by proxy.  A  shareholder  may  authorize
another  person to act as proxy for the  shareholder  in any  manner  permitted
under  Maryland  law,  including by  authorizing  a person or  organization  to
execute a proxy for the  shareholder  pursuant to telephonic or  electronically
transmitted  instructions.  Any holder of  fractional  shares of the Fund shall
have proportionally the same voting rights as are provided for a full share. No
proxy shall be valid after  eleven  months from the date of  execution,  unless
otherwise provided in the proxy. Each proxy shall be revocable unless expressly
provided therein to be irrevocable or unless otherwise made irrevocable by law.
Proxies  shall be delivered to the  Secretary of the Fund before or at the time
of such meeting.  The vote of the holders of a majority of the shares  entitled
to vote and  represented at a meeting at which a quorum is present shall be the
act of the  shareholders  meeting,  unless  the  vote of a  greater  number  is
required by law, the Articles of Incorporation or these Bylaws.

       SECTION 2.8. OFFICERS.  The President shall preside at and the Secretary
shall keep the records of each meeting of  shareholders,  and in the absence of
either such officer,  his duties shall be performed by some person appointed by
the meeting.

       SECTION 2.9. ORDER OF BUSINESS. The business shall be transacted in such
order as the presiding officer shall determine.

                                       2

<PAGE>


                                  ARTICLE III

                                   DIRECTORS

       SECTION 3.1.  GENERAL  POWERS.  The business and property of the Company
shall be managed by its Board of  Directors,  and  subject to the  restrictions
imposed by law, by the  Articles of  Incorporation,  or by these  Bylaws,  they
shall exercise all the powers of the Company.

       SECTION 3.2.  DELEGATION.  To the extent  permitted by law, the Board of
Directors may delegate the duty of  management of the Company's  assets and may
delegate  such other of its powers and duties as are  permitted by the Articles
of  Incorporation  or these  Bylaws,  (a) to the  Executive  Committee or other
committees,  or (b) to another party to act as manager,  investment  adviser or
underwriter  pursuant to a written  contract or contracts to be approved in the
manner required by the Investment Company Act of 1940.

       SECTION 3.3.  NUMBER.  The Board of Directors shall consist of seven (7)
directors,  but the number of directors may be increased or decreased (provided
such decrease does not shorten the term of any incumbent director) from time to
time by the Board of Directors by  amendment of the Bylaws,  provided  that the
number of directors  shall not be more than twenty-one (21) nor less than three
(3).

       SECTION 3.4. ELECTION, RESIGNATIONS, TERM OF OFFICE AND VACANCIES. Until
the first meeting of  shareholders  or until their  successors are duly elected
and  qualified,  the Board of Directors  shall  consist of the persons named as
such in the  Articles of  Incorporation.  Cumulative  voting is not  permitted.
Directors need not be residents of the State of Maryland or shareholders of the
Company.  Each  director,  unless he sooner  resigns or is removed,  shall hold
office until his  successor is elected and shall have  qualified.  Any director
may resign his office at any time by delivering  his  resignation in writing to
the Company.  The acceptance of such resignation,  unless required by the terms
thereof, shall not be necessary to make such resignation effective.  Subject to
compliance  with  Section  16(a) of the  Investment  Company  Act of  1940,  as
amended, any vacancies occurring in the Board of Directors other than by reason
of an increase in the number of directors may be filled by the affirmative vote
of a majority of the  remaining  directors,  even though such  majority is less
than a quorum.  A director  elected by the Board of Directors to fill a vacancy
shall be elected for the  unexpired  term of his  predecessor  in office.  If a
special  meeting of  shareholders  is required  to fill a vacancy,  the meeting
shall be held within sixty (60) days or such longer  period as may be permitted
by the Securities and Exchange Commission.

       SECTION 3.5. PLACE OF MEETING. Meetings of the Board of Directors may be
held either  within or without  the State of  Maryland,  at  whatever  place is
specified  by the  officer  calling the  meeting.  In the absence of a specific
place  designation,  the meeting  shall be held at the office of the Company in
the City of San Antonio, Texas.

       SECTION 3.6.  ORGANIZATIONAL  AND REGULAR  MEETINGS.  Any newly  elected
Board of Directors may hold its first  meeting for the purpose of  organization
and the transaction of business, if a quorum is present,  immediately following
its election at a meeting of the shareholders, at the place of such meeting. No
notice of such first  meeting need be given to either old or new members of the
Board of Directors.  Regular  meetings may be held at such other times as shall
be  designated  by the Board of Directors  and notice of such regular  meetings
shall not be required.

       SECTION  3.7.  SPECIAL  MEETINGS.  Special  meetings  of  the  Board  of
Directors may be held at any time upon the call of the President or any two (2)
directors  of the  Company.  The  Secretary  shall give notice of such  special
meeting  by  mailing  the same at least  three (3) days or by  telegraphing  or
telephoning  the same at least one (1) day before the meeting to each director.
Notice  of the  time,  place  and  purpose  of such  meeting  may be  

                                       3
<PAGE>

waived in accordance with Article VI of these Bylaws.  Attendance of a director
at such meeting shall also constitute a waiver of notice thereof,  except where
he attends for the  announced  purpose of objecting to the  transaction  of any
business  on the ground that the meeting is not  lawfully  called or  convened.
Except as otherwise herein provided,  neither the business to be transacted at,
nor the purpose of, any  regular or special  meeting of the Board of  Directors
need be specified in the notice or waiver of notice of such meeting.

       SECTION  3.8.  QUORUM AND MANNER OF ACTING.  A majority of the number of
directors fixed by these Bylaws as from time to time amended shall constitute a
quorum for the  transaction of business,  but a smaller number may adjourn from
time to time until they can secure  the  attendance  of a quorum.  The act of a
majority of the  directors  present at any meeting at which a quorum is present
shall be the act of the  Board of  Directors,  except  as  otherwise  expressly
required  under  the  provisions  of the  Investment  Company  Act of 1940,  as
amended,  or  where  a  larger  vote  is  required  by  law,  the  Articles  of
Incorporation  or these Bylaws.  Any regular or special meeting of the Board of
Directors may be adjourned from time to time by those present, whether a quorum
is present or not.

       SECTION  3.9.  REMOVAL OF  DIRECTORS.  Any  director may be removed from
office,  either for or without cause, at any special meeting of shareholders by
the affirmative  vote of a majority of the outstanding  shares entitled to vote
for the election of  directors.  The notice  calling  such  meeting  shall give
notice of the intention to act upon such matter, and if the notice so provides,
the vacancy  caused by such  removal may be filled at such meeting by vote of a
majority of the shares represented at such meeting and entitled to vote for the
election of directors.

       SECTION 3.10.  ACTION WITHOUT MEETING.  Subject to the provisions of the
Investment Company Act of 1940, as amended, any action permitted or required by
law, these Bylaws or by the Articles of  Incorporation to be taken at a meeting
of the Board of Directors or any  committee may be taken without a meeting if a
consent in  writing,  setting  forth the action so taken,  is signed by all the
members of the Board of Directors of such  committee,  as the case may be. Such
consent shall have the same force and effect as a unanimous  vote at a meeting,
and  may be  stated  as such in any  document  or  instrument  filed  with  the
Secretary of State or State Department of Assessments and Taxation of Maryland.

                                   ARTICLE IV

                                   COMMITTEES

       SECTION  4.1.  EXECUTIVE  COMMITTEE.  The  Board of  Directors  may,  by
resolution adopted by a majority of the entire Board of Directors, designate an
Executive  Committee  consisting  of  the  President  and  one or  more  of the
directors of the Company,  and may delegate to such Executive  Committee any of
the powers of the Board of Directors except:

             a.     the power to declare dividends or distributions on stock;

             b.     the power to recommend to the shareholders any action which
                    requires shareholder approval;

             c.     the power to amend the Bylaws;

             d.     the power to approve any merger or share exchange which 
                    does not require shareholder approval; or

             e.     the power to issue stock, except as hereafter provided.

                                       4
<PAGE>

If the Board of Directors has given general  authorization  for the issuance of
stock of any class,  the  Executive  Committee,  in  accordance  with a general
formula or method  specified by the Board of Directors by  resolution,  may fix
the terms of such class and the terms on which any stock may be issued,  to the
extent permitted by law and the Articles of Incorporation.

The Executive Committee shall keep written minutes of its proceedings and shall
report such minutes to the Board of Directors.  All such  proceedings  shall be
subject to revision or alteration by the Board of Directors; provided, however,
that third parties shall not be prejudiced by such revision or alteration.

       SECTION 4.2. OTHER COMMITTEES. The Board of Directors may, by resolution
or resolutions adopted by a majority of the entire Board, designate one or more
committees,  each  committee to consist of two or more of the  directors of the
Company, which committee shall have and may exercise the powers of the Board of
Directors in the  management  of the business and affairs of the Company to the
extent provided in said  resolution or resolutions,  except where action of the
Board of Directors is specified by law. Such committee or committees shall have
such name or names as may be determined from time to time by resolution adopted
by the Board of Directors.  The Board of Directors  shall have the power at any
time to fill  vacancies  in,  to  change  the  size or  membership  of,  and to
discharge any such committees.

       SECTION 4.3.  GENERAL.  A committee shall fix its own rules of procedure
not  inconsistent  with these  Bylaws and with any  directions  of the Board of
Directors. It shall meet at such times and places and upon such notice as shall
be  provided  by such rules or by  resolution  of the Board of  Directors.  The
presence  of a  majority  shall  constitute  a quorum  for the  transaction  of
business, and in every case an affirmative vote of a majority of the members of
the  committee  present  shall be  necessary  for the taking of any  action.  A
committee  shall keep regular minutes of its proceedings and report the same to
the Board of Directors when required.

                                   ARTICLE V

                                    OFFICERS

       SECTION 5.1. NUMBER.  The officers of the Company shall be chosen by the
Board of Directors  and shall be a Chairman of the Board,  a President,  a Vice
President, a Secretary and a Treasurer.  The Board of Directors may also choose
additional Vice Presidents, and one or more Assistant Secretaries and Assistant
Treasurers.

       SECTION 5.2.  SELECTION.  The Board of Directors annually shall choose a
Chairman of the Board, a President,  one or more Vice  Presidents,  a Secretary
and a Treasurer,  none of whom, other than the Chairman of the Board, need be a
member of the Board.  Any two or more offices,  except the offices of President
and  Vice  President,  may be held by the same  person,  but no  officer  shall
execute, acknowledge or verify any instrument in more than one capacity if such
instrument is required by law, the Articles of Incorporation or these Bylaws to
be executed, acknowledged or verified by two or more officers.

       SECTION  5.3.  TERM OF OFFICE.  The  officers of the Company  shall hold
office until their successors are chosen and qualified.  Any vacancy  occurring
in any office of the Company shall be filled by the Board of Directors.

       SECTION  5.4.  SELECTION  OF OTHER  OFFICERS  AND  AGENTS.  The Board of
Directors  may  appoint  such  other  officers  and  agents  as it  shall  deem
necessary,  who shall hold their offices for such terms and shall exercise such
powers and perform such duties as shall be determined  from time to time by the
Board of Directors.

                                       5
<PAGE>

       SECTION  5.5.  SALARIES.  The salaries of all officers and agents of the
Company  shall  be  fixed  by the  Board  of  Directors.  No  officer  shall be
disqualified  from receiving a salary by reason of his also being a director of
the Company.

       SECTION  5.6.  SUSPENSION.  Except for the Chairman of the Board and the
President  of  the  Company,  all  officers  shall  be  subject  to  peremptory
suspension by written order of the President,  subject to subsequent  action of
the Board of  Directors.  The  Chairman of the Board and the  President  of the
Company shall be subject to peremptory suspension by written order of the Board
of Directors.

       SECTION 5.7. REMOVAL. Any officer or agent of the Company may be removed
during his term by a majority vote of the Board of Directors  whenever,  in its
judgment, removal of such person would serve the best interests of the Company.
Such removal shall  terminate  all of such person's  authority as an officer of
agent,  but his right to salary and any  contract  rights  shall  depend on the
terms of his  employment  and the  circumstances  of his  removal.  Election or
appointment of an officer or agent shall not of itself create contract rights.

       SECTION  5.8.  CHAIRMAN  OF THE BOARD.  The  Chairman of the Board shall
preside at meetings of the Board of Directors.  He shall have such other powers
as are  usually  incident  to the  office  of  Chairman  of the Board and shall
exercise such other specific  powers as the Board of Directors may from time to
time assign to him.

       SECTION  5.9.  PRESIDENT.  Subject  to  the  control  of  the  Board  of
Directors,  the President shall be the chief  operating  officer of the Company
and shall preside at all meetings of the shareholders.  He shall assume general
and active  management  of the  business  of the Company and general and active
supervision and direction over the other officers, agents, and employees of the
Company and shall see that their duties are properly  performed.  The foregoing
shall not apply to any responsibilities  delegated by the Board of Directors to
a manager,  investment  adviser,  underwriter,  custodian,  or  transfer  agent
pursuant  to  any  written  contract,  as  provided  for  in  the  Articles  of
Incorporation or these Bylaws.

       The  President,  either alone or (if so required by law, these Bylaws or
the Board of Directors)  with the Secretary or any other officer of the Company
so authorized by the Board of Directors, may sign certificates of shares of the
Company or any deeds, mortgages, bonds, contracts or other instruments that the
Board of Directors has authorized  for  execution,  except when the signing and
execution thereof shall be expressly  delegated by the Board of Directors or by
these Bylaws to some other officer or agent of the Company or shall be required
by law to be otherwise signed or executed.

       The President, in conjunction with the Secretary,  may duly authenticate
the  Company  records or copies  thereof  for use as  evidence in any action or
proceeding to which the Company may be a party.

       In general,  the  President  shall  perform  all duties  incident to the
office of President  and such other duties as may be prescribed by the Board of
Directors from time to time.

       SECTION 5.10. THE VICE PRESIDENTS. The Vice President, or if there shall
be more than one, the Vice  Presidents in the order  determined by the Board of
Directors,  shall be vested with all the powers and required to perform all the
duties of the  President  in his absence or  disability  or refusal to act, and
when  so  acting  shall  have  all  the  powers  of and be  subject  to all the
restrictions  upon the President.  Each Vice President shall perform such other
duties and have such other  powers as the  President  or the Board of Directors
may from time to time prescribe.

                                       6
<PAGE>


       SECTION 5.11. THE SECRETARY AND ASSISTANT SECRETARIES.  The Secretary of
the Company shall have the following powers and duties:

             a.     to keep the minutes of the meetings of shareholders, of the
                    Board of Directors,  and of any committee thereof in one or
                    more books provided for that purpose;

             b.     to see that all notices are duly given,  in accordance with
                    these Bylaws or as required by law;

             c.     to be  custodian of the  corporate  records and the seal of
                    the Company;

             d.     to see that  the  seal of the  Company  is  affixed  to all
                    documents  duly  authorized  for  execution  under  seal on
                    behalf of the Company;

             e.     to keep or  cause  to be kept  for the  Company  the  stock
                    ledger described in Section 7.2 of these Bylaws;

             f.     to  countersign   certificates  for  Company  shares,   the
                    issuance of which have been authorized by resolution of the
                    Board of Directors;

             g.     to have general  charge of the stock  transfer books of the
                    Company;

             h.     to duly  authenticate,  in conjunction  with the President,
                    the  Company  records  or  copies  thereof  to be  used  as
                    evidence in any action or  proceedings to which the Company
                    may be a party and

             i.     to perform all duties incidental to the Office of Secretary
                    and  such  other  duties  as,  from  time to  time,  may be
                    assigned  to the  Secretary  by the  President  or Board of
                    Directors.

The  Assistant  Secretary,  or  if  there  by  more  than  one,  the  Assistant
Secretaries in the order  determined by the Board of Directors,  shall,  in the
absence or refusal to act or  disability of the  Secretary,  perform the duties
and exercise the powers of the  Secretary  and shall  perform such other duties
as, from time to time, may be assigned by the  President,  the Secretary or the
Board of Directors.

       SECTION 5.12.  THE TREASURER  AND  ASSISTANT  TREASURERS.  The Treasurer
shall:

             a.     have charge and custody of, and be responsible for, all the
                    funds and securities of the Company, except those which the
                    Company  has  placed  in the  custody  of a bank  or  trust
                    company  pursuant to a written  agreement  designating such
                    bank or trust  company as  custodian of the property of the
                    Company;

             b.     keep  full  and  accurate  accounts  of  the  receipts  and
                    disbursements in books belonging to the Company;

             c.     cause all monies and other valuables to be deposited to the
                    credit of the Company;

             d.     receive,  and give receipts for,  monies due and payable to
                    the Company from any source whatsoever;

             e.     disburse  the  funds  of  the  Company  and  supervise  the
                    investment  of its funds as  ordered or  authorized  by the
                    Board of Directors, taking proper vouchers therefore; and

                                       7
<PAGE>

             f.     in general,  perform all the duties  incident to the office
                    of Treasurer and such other duties as from time to time may
                    be  assigned  to him  by the  President,  or the  Board  of
                    Directors.

       The  Assistant  Treasurer,  or if there be more than one, the  Assistant
Treasurers in the order  determined by the Board of  Directors,  shall,  in the
absence or refusal to act or  disability of the  Treasurer,  perform such other
duties as, from time to time, may be assigned by the  President,  the Treasurer
or the Board of Directors.

       SECTION 5.13. OTHER SUBORDINATE OFFICERS. Other subordinate officers and
agents  appointed  by the Board of  Directors  shall  exercise  such powers and
perform such duties as may be assigned by the  President or may be delegated to
them by the resolution  appointing them, or by subsequent  resolutions  adopted
from time to time by the Board of Directors.

       SECTION 5.14.  BONDING.  The Board of Directors may require any officer,
agent or employee to give bond for the  faithful  discharge of his duty and for
the  protection  of the Company in such sum and with such surety or sureties as
the Board of Directors may deem advisable.

                                   ARTICLE VI

                               WAIVERS OF NOTICE

       Whenever, under the provisions of any law, the Articles of Incorporation
of amendments  thereto,  or these Bylaws, any notice is required to be given to
any  shareholder,  director or committee  member,  a waiver  thereof in writing
signed by the person or persons  entitled  to such  notice,  whether  before or
after  the time  stated  therein,  shall be  equivalent  to the  giving of such
notice.  Waivers  given by telegram,  radiogram,  or cablegram  shall be deemed
waivers in writing within the meaning of these Bylaws.

                                  ARTICLE VII

                                 CAPITAL STOCK

       SECTION  7.1.  SHARE  CERTIFICATES.  The Company will issue upon written
request  certificates  representing  all full shares to which  shareholders are
entitled. No certificate may be issued until payment for the shares represented
thereby  has been  made in  full.  Such  certificates  shall  be  numbered  and
registered  in the  order in which  they are  issued,  shall be  signed  by the
Chairman of the Board,  President or Vice  President and  countersigned  by the
Secretary,  any Assistant Secretary,  the Treasurer or any Assistant Treasurer,
and may bear the seal of the Company or a facsimile thereof.  The signatures of
such officers upon a  certificate  may be  facsimiles,  if the  certificate  is
countersigned  by a transfer agent. In case any officer who has signed or whose
facsimile  signature has been placed upon such certificate shall have ceased to
be such  officer  before such  certificate  is issued,  it may be issued by the
Company  with the same  effect  as if he were such  officer  at the date of its
issuance.  Each  share  certificate  shall  include on its face the name of the
Company,  the name of the  shareholder  and the  class of stock  and  number of
shares represented by the certificate. In addition it shall contain on its face
or  its  back  a  statement  that  the  Company  will  furnish  to  any  of the
shareholders   upon  request  and  without  charge  a  full  statement  of  the
designations and any preferences,  conversion and other rights,  voting powers,
restrictions,  limitations  as to  dividends,  qualifications,  and  terms  and
conditions  of  redemption  of the  shares of each class  which the  Company is
authorized  to issue and the  authority  of the Board of Directors to designate
new classes and determine such matters with respect thereto.

       SECTION 7.2. STOCK LEDGER AND RECORD OF SHAREHOLDERS.  The Company shall
maintain at its offices in the City of San Antonio,  State of Texas,  or at the
offices of a transfer  agent,  if one is  appointed,  an original or  

                                       8
<PAGE>

duplicate stock ledger  containing the names and addresses of all  shareholders
and the  number of shares of each  class held by each  shareholder,  and,  if a
certificate has been issued, the certificate  number, date of issue and whether
it was original issue or by transfer. The Board of Directors of the Company may
appoint one or more  transfer  agents of the stock of the  Company.  Unless and
until such appointment is made, the Secretary of the Company shall maintain the
stock  ledger.  The names of  shareholders  as they appear on the stock  ledger
shall be the  official  list of  shareholders  of record of the Company for all
purposes.  The  Company  shall be entitled to treat the holder of record of any
shares of the Company as the owner thereof for all  purposes,  and shall not be
bound to recognize any equitable or other claim to, or interest in, such shares
or any  rights  deriving  from such  shares,  on the part of any other  person,
including (but without limitation) a purchaser,  assignee or transferee, unless
and until  such  other  person  becomes  the  holder of record of such  shares,
whether or not the Company shall have either actual or  constructive  notice of
the interest of such other person,  except as otherwise provided by the laws of
Maryland.

       SECTION  7.3.  TRANSFERS OF SHARES.  The shares of the Company  shall be
transferable  on the stock  certificate  books of the company upon  appropriate
authorization in person by the holder of record thereof, or his duly authorized
attorney or legal  representative,  and,  if a  certificate  was  issued,  upon
endorsement and surrender for  cancellation of the certificate for such shares.
All  certificates  surrendered  for  transfer  shall be  cancelled,  and no new
certificates  shall be issued to the transferee  until a former  certificate or
certificates  for a like  number of shares  shall  have  been  surrendered  and
cancelled,  except  that  in  the  case  of  a  lost,  destroyed  or  mutilated
certificate,  a new certificate may be issued therefor upon such conditions for
the  protection  of the  Company and any  transfer  agent of the Company as the
Board of Directors may prescribe.

       SECTION 7.4. ACCOUNT MAINTENANCE CHARGES. The Board of Directors may, in
accordance  with  such  terms  and  conditions  as it may  from  time  to  time
prescribe,  establish an account  maintenance charge to be paid by shareholders
of the Company  for  maintenance  of their  accounts.  Any account  maintenance
charge  established  by the Board of  Directors  of the  Company may be charged
against  income  credited to a shareholder  account and, to the extent there is
not sufficient income credited to a shareholder  account in any period to cover
such charge, the Company may redeem sufficient shares owned by a shareholder to
cover such charges. A shareholder  charged with any maintenance charge pursuant
to this  Section 7.4 as a result of having an account  with a value less than a
specified amount shall be given prompt written notice at the time of imposition
of such charge.

                                  ARTICLE VIII

                                   CUSTODIAN

       SECTION 8.1. EMPLOYMENT OF CUSTODIAN. All assets of the Company shall be
held by one or more custodian banks or trust companies meeting the requirements
of the Investment Company Act of 1940, as amended, and having capital,  surplus
and undivided  profits of at least $2,000,000 and may be registered in the name
of the Company,  including a designation of the particular  class to which such
assets belong, or any such custodian, or a nominee of either of them. The terms
of any custodian agreement shall be determined by the Board of Directors, which
terms shall be in accordance with the provisions of the Investment  Company Act
of 1940, as amended. If so directed by vote of the holders of a majority of the
outstanding  shares of a particular class or by vote of the Board of Directors,
the custodian of the assets  belonging to such class shall deliver and pay over
such assets as specified in such vote.

       Subject to such  rules,  regulations  and orders as the  Securities  and
Exchange  Commission  may adopt,  the Company may direct a custodian to deposit
all or any part of the  securities  owned by the  Company  in a system  for the
central handling of securities established by a national securities exchange or
a national securities  association  registered with the Securities and Exchange
Commission, or otherwise in accordance with the 

                                       9
<PAGE>

Investment  Company  Act of 1940,  as  amended,  pursuant  to which  system all
securities of any particular  class of any issuer  deposited  within the system
are treated as fungible and may be transferred or pledged by bookkeeping  entry
without physical  delivery of such securities,  provided that all such deposits
shall be  subject  to  withdrawal  only  upon the  order  of the  Company  or a
custodian.

                                   ARTICLE IX

                    INSPECTION OF BOOKS AND SHAREHOLDER LIST

       SECTION 9.1.  INSPECTION OF BOOKS.  The  Directors  shall have the power
from time to time to determine  whether and to what  extent,  and at what times
and places, and under what conditions and regulations the accounts and books of
the Company  (other than the stock  ledger) or any of them shall be open to the
inspection of the shareholders.  No shareholder shall have any right to inspect
any account or book or document of the Company  except as  conferred  by law or
authorized by the Board of Directors or the shareholders.

       SECTION 9.2.  INSPECTION OF  SHAREHOLDER  LIST. Any one or more persons,
who together are and for at least six months have been  shareholders  of record
of at least 5% of the outstanding shares of the Company, may submit (unless the
Company at the time of the request  maintains a duplicate  stock  ledger at its
principal  office in Maryland) a written  request to any officer of the Company
or its  resident  agent  in  Maryland  for a list  of the  shareholders  of the
Company.


Within 20 days after such  request,  there shall be  prepared  and filed at the
Company's  principal  office in  Maryland  a list,  verified  under  oath by an
officer of the Company or by its stock transfer agent or registrar,  which sets
forth the name and address of each shareholder and the number of shares of each
class which the shareholder holds.

                                   ARTICLE X

                                 MISCELLANEOUS

       SECTION 10.1.  FISCAL YEAR.  The fiscal year of the Company  (except for
the class  designated  the S&P 500 Index  Fund) shall begin on the first day of
August and end on the thirty-first day of July in each year. The fiscal year of
the S&P 500 Index Fund shall  begin on the first day of January  and end on the
thirty-first day of December in each year.

       SECTION 10.2. SEAL. The corporate seal shall have inscribed  thereon the
name of the  Company,  the year of its  organization  and the words  "Corporate
Seal,  Maryland." The seal may be used by causing it or a facsimile  thereof to
be impressed or affixed or reproduced or otherwise.

       SECTION  10.3.  ANNUAL  STATEMENT OF AFFAIRS.  The President or any Vice
President or the Treasurer shall prepare annually a full and correct  statement
of the  affairs  of the  Company,  to include a balance  sheet and a  financial
statement of operations for the preceding fiscal year. The statement of affairs
shall be placed on file at the Company's principal office within 120 days after
the end of the fiscal year.

                                      10
<PAGE>

                                   ARTICLE XI

                                   AMENDMENT

       SECTION 11.1.  BY  SHAREHOLDERS.  These Bylaws may be amended,  altered,
repealed  or added to at any  special  meeting  called for that  purpose by the
affirmative  vote of a majority of the shares  entitled to vote and represented
at such meeting.

       SECTION 11.2.  BY DIRECTORS.  The Board of Directors may alter and amend
these Bylaws at any regular  meeting of the Board, or at any special meeting of
the Board called for that  purpose,  by the  affirmative  vote of a majority of
such  Board,  except  where a vote of  shareholders  is  required  by law,  the
Articles of Incorporation, or these Bylaws.


CONTRACT\MF\BYLAWS\02-11-99.MF

                                 EXHIBIT 8(i)

<PAGE>

January 12, 1999



USAA Mutual Fund, Inc.,
USAA Investment Trust,
USAA Tax Exempt Fund, Inc., and 
USAA State Tax-Free Trust, on behalf of and for
the benefit of the series 
of funds comprising each such Borrower 
as set forth on Schedule A hereto 
9800 Fredericksburg Road 
San Antonio, Texas 78288

Attention: Michael J.C. Roth, President

Gentlemen:

This  Facility  Agreement  Letter (this  "Agreement")  sets forth the terms and
conditions  for loans (each a "Loan" and  collectively  the "Loans") which USAA
Capital  Corporation  ("CAPCO")  may from time to time make  during  the period
commencing January 12, 1999 and ending January 11, 2000 (the "Facility Period")
to USAA Mutual Fund, Inc., USAA Investment  Trust,  USAA Tax Exempt Fund, Inc.,
and USAA State Tax-Free Trust,  and each investment  company which may become a
party hereto  pursuant to the terms of this  Agreement  (each a "Borrower"  and
collectively  the  "Borrowers"),  each of which is executing  this Agreement on
behalf  of and for the  benefit  of the  series of funds  comprising  each such
Borrower as set forth on Schedule A hereto (as hereafter modified or amended in
accordance with the terms hereof) (each a "Fund" and collectively the "Funds"),
under a master  revolving  credit  facility (the  "Facility").  USAA Investment
Management  Company is the Manager and  Investment  Advisor of each Fund.  This
Agreement replaces in its entirety that certain Facility Agreement Letter dated
January 13, 1998,  between the  Borrowers  and CAPCO.  CAPCO and the  Borrowers
hereby agree as follows:

       1.  AMOUNT.  The  aggregate  principal  amount of the Loans which may be
advanced  under this Facility  shall not exceed,  at any one time  outstanding,
Five Hundred Million Dollars ($500,000,000).  The aggregate principal amount of
the Loans which may be borrowed by a Borrower  for the benefit of a  particular
Fund under this Facility shall not exceed the borrowing  limit (the  "Borrowing
Limit")  on  borrowings  applicable  to such Fund,  as set forth on  Schedule A
hereto.

       2. PURPOSE AND  LIMITATIONS  ON  BORROWINGS.  Each Borrower will use the
proceeds of each Loan made to it solely for temporary or emergency  purposes of
the Fund for whose  benefit it is  borrowing  in  accordance  with such  Fund's
Borrowing Limit (Schedule A) and prospectus in effect at the time of such Loan.
Portfolio  securities  may not be  purchased  by a Fund  while  there is a Loan
outstanding  under the Facility or any other facility,  if the aggregate amount
of such Loan and any other  such loan  exceeds  5% of the total  assets of such
Fund.

<PAGE>

       3.  BORROWING  RATE AND  MATURITY  OF LOANS.  CAPCO may make  Loans to a
Borrower and the principal  amount of the Loans  outstanding  from time to time
shall  bear  interest  at a rate per  annum  equal  to the rate at which  CAPCO
obtains  funding  in the  capital  markets.  Interest  on the  Loans  shall  be
calculated  on the basis of a year of 360 days and the actual days  elapsed but
shall not exceed the highest lawful rate.  Each loan will be for an established
number  of  days   agreed   upon  by  the   applicable   Borrower   and  CAPCO.
Notwithstanding the above, all Loans to a Borrower shall be made available at a
rate per annum equal to the rate at which CAPCO would make loans to  affiliates
and  subsidiaries.  Further,  if the  CAPCO  rate  exceeds  the rate at which a
Borrower could obtain funds pursuant to the NationsBank,  N.A.  ("NationsBank")
364-day committed  $100,000,000 Master Revolving Credit Facility,  the Borrower
will in the absence of predominating  circumstances,  borrow from  NationsBank.
Any past due principal  and/or  accrued  interest shall bear interest at a rate
per annum equal to the  aggregate of the Federal Funds Rate plus 1 percent (100
basis points) and shall be payable on demand.

       4. ADVANCES, PAYMENTS,  PREPAYMENTS AND READVANCES. Upon each Borrower's
request,  and subject to the terms and conditions  contained herein,  CAPCO may
make Loans to each Borrower on behalf of and for the benefit of its  respective
Fund(s) during the Facility  Period,  and each Borrower may at CAPCO's sole and
absolute  discretion,  borrow,  repay and reborrow funds  hereunder.  The Loans
shall be evidenced by a duly executed and delivered Master Grid Promissory Note
in the form of EXHIBIT A. Each Loan  shall be in an  aggregate  amount not less
than One Hundred Thousand United States Dollars (U.S.  $100,000) and increments
of One Thousand United States Dollars (U.S. $1,000) in excess thereof.  Payment
of principal and interest due with respect to each Loan shall be payable at the
maturity of such Loan and shall be made in funds immediately available to CAPCO
prior to 2 p.m.  San Antonio  time on the day such  payment is due, or as CAPCO
shall  otherwise  direct  from  time to time  and,  subject  to the  terms  and
conditions  hereof,  may  be  repaid  with  the  proceeds  of a  new  borrowing
hereunder. Notwithstanding any provision of this Agreement to the contrary, all
Loans, accrued but unpaid interest and other amounts payable hereunder shall be
due and payable upon  termination of the Facility  (whether by  acceleration or
otherwise).

       5. FACILITY FEE. As this Facility is uncommitted,  no facility fee shall
be charged by CAPCO.

       6.  OPTIONAL  TERMINATION.  The  Borrowers  shall have the right upon at
least three (3) business days prior written  notice to CAPCO,  to terminate the
Facility.

       7. MANDATORY TERMINATION OF THE FACILITY. The Facility,  unless extended
by written  amendment,  shall  automatically  terminate  on the last day of the
Facility Period and any Loans then outstanding  (together with accrued interest
thereon and any other amounts owing hereunder) shall be due and payable on such
date.

<PAGE>

       8. UNCOMMITTED FACILITY.  The Borrowers acknowledge that the Facility is
an  uncommitted  facility and that CAPCO shall have no  obligation  to make any
Loan requested during the Facility Period under this Agreement.  Further, CAPCO
shall not make any Loan if this Facility has been  terminated by the Borrowers,
or if at the time of a  request  for a Loan by a  Borrower  (on  behalf  of the
applicable  Fund(s)) there exists any Event of Default or condition which, with
the passage of time or giving of notice, or both, would constitute or become an
Event of Default with respect to such Borrower (or such applicable Fund(s)).

       9. LOAN  REQUESTS.  Each request for a Loan (each a "Borrowing  Notice")
shall be in writing by the applicable Borrower(s), except that such Borrower(s)
may make an oral  request  (each an "Oral  Request")  provided  that  each Oral
Request  shall be followed by a written  Borrowing  Notice  within one business
day. Each Borrowing  Notice shall specify the following  terms ("Terms") of the
requested  Loan:  (i) the date on which such Loan is to be disbursed,  (ii) the
principal amount of such Loan,  (iii) the Borrower(s)  which are borrowing such
Loan and the  amount of such Loan to be  borrowed  by each  Borrower,  (iv) the
Funds for whose  benefit the loan is being  borrowed and the amount of the Loan
which is for the benefit of each such Fund, and (v) the requested maturity date
of the Loan.  Each  Borrowing  Notice  shall also set forth the total assets of
each Fund for whose  benefit a portion of the Loan is being  borrowed as of the
close of business on the day  immediately  preceding the date of such Borrowing
Notice.  Borrowing notices shall be delivered to CAPCO by 9:00 a.m. San Antonio
time on the day the Loan is requested to be made.

Each  Borrowing  Notice  shall  constitute  a  representation  to  CAPCO by the
applicable  Borrower(s)  that  all of the  representations  and  warranties  in
Section  12 hereof  are true and  correct  as of such date and that no Event of
Default or other  condition which with the passage of time or giving of notice,
or both, would result in an Event of Default, has occurred or is occurring.

       10.  CONFIRMATIONS;  CREDITING OF FUNDS; RELIANCE BY CAPCO. Upon receipt
by CAPCO of a Borrowing Notice:

                (a)  CAPCO  shall  provide  each  applicable  Borrower  written
       confirmation  of the Terms of such Loan via  facsimile or  telecopy,  as
       soon as reasonably practicable;  provided,  however, that the failure to
       do so shall not affect the obligation of any such Borrower;

                (b) CAPCO shall make such Loan in accordance  with the Terms by
       transfer  of the Loan  amount in  immediately  available  funds,  to the
       account of the applicable  Borrower(s) as specified in EXHIBIT B to this
       Agreement or as such Borrower(s)  shall otherwise  specify to CAPCO in a
       writing signed by an Authorized Individual (as defined in Section 11) of
       such Borrower(s); and

<PAGE>

                (c) CAPCO  shall  make  appropriate  entries on the Note or the
       records of CAPCO to reflect  the Terms of the Loan;  provided,  however,
       that the  failure  to do so  shall  not  affect  the  obligation  of any
       Borrower.

                (d) CAPCO  shall be  entitled  to rely  upon and act  hereunder
       pursuant to any Oral Request which it  reasonably  believes to have been
       made by the applicable Borrower through an Authorized Individual. If any
       Borrower  believes that the  confirmation  relating to any Loan contains
       any error or discrepancy from the applicable Oral Request, such Borrower
       will promptly notify CAPCO thereof.

       11.  BORROWING  RESOLUTIONS  AND  OFFICERS'  CERTIFICATES.  Prior to the
making  of any Loan  pursuant  to this  Agreement,  the  Borrowers  shall  have
delivered  to  CAPCO  (a) the  duly  executed  Note,  (b)  Resolutions  of each
Borrower's Trustees or Board of Directors authorizing such Borrower to execute,
deliver and perform  this  Agreement  and the Note on behalf of the  applicable
Funds,  (c) an Officer's  Certificate  in  substantially  the form set forth in
EXHIBIT  D to this  Agreement,  authorizing  certain  individuals  ("Authorized
Individuals"),  to take on behalf of each Borrower (on behalf of the applicable
Funds) actions contemplated by this Agreement and the Note, and (d) the Opinion
of Counsel to USAA Investment  Management  Company,  Manager and Advisor to the
Borrowers, with respect to such matters as CAPCO may reasonably request .

       12.  REPRESENTATIONS  AND WARRANTIES.  In order to induce CAPCO to enter
into this Agreement and to make the Loans provided for hereunder, each Borrower
hereby  makes with  respect to itself,  and as may be  relevant,  the series of
Funds comprising such Borrower,  the following  representations and warranties,
which shall survive the execution and delivery hereof and of the Note:

                (a) ORGANIZATION,  STANDING, ETC. The Borrower is a corporation
       or trust duly organized,  validly  existing,  and in good standing under
       applicable state laws and has all requisite corporate or trust power and
       authority to carry on its  respective  businesses  as now  conducted and
       proposed to be  conducted,  to enter into this  Agreement  and all other
       documents  to be  executed  by it in  connection  with the  transactions
       contemplated hereby, to issue and borrow under the Note and to carry out
       the terms hereof and thereof;

                (b) FINANCIAL  INFORMATION;  DISCLOSURE,  ETC. The Borrower has
       furnished CAPCO with certain financial  statements of such Borrower with
       respect to itself and the applicable  Funds, all of which such financial
       statements  have been prepared in  accordance  with  generally  accepted
       accounting  principles  applied on a consistent basis and fairly present
       the  financial  position and results of  operations of such Borrower and
       the applicable Funds on the dates and for the periods indicated. Neither
       this Agreement nor any financial statements,  reports or other documents
       or  certificates  furnished to CAPCO by such Borrower or the  applicable
       Funds in connection with the  transactions  contemplated  hereby contain
       any untrue  statement  of a material  fact or omit to state any material
       fact  necessary to make the  statements  contained  herein or therein in
       light of the circumstances when made not misleading;

<PAGE>

                (c)  AUTHORIZATION;  COMPLIANCE  WITH  OTHER  INSTRUMENTS.  The
       execution,  delivery and performance of this Agreement and the Note, and
       borrowings  hereunder,  have  been  duly  authorized  by  all  necessary
       corporate  or trust  action of the  Borrower  and will not result in any
       violation of or be in conflict  with or  constitute a default  under any
       term of the charter,  by-laws or trust agreement of such Borrower or the
       applicable  Funds,  or of any  borrowing  restrictions  or prospectus or
       statement of additional  information  of such Borrower or the applicable
       Funds,  or  of  any  agreement,  instrument,  judgment,  decree,  order,
       statute, rule or governmental regulation applicable to such Borrower, or
       result in the creation of any mortgage, lien, charge or encumbrance upon
       any of the properties or assets of such Borrower or the applicable Funds
       pursuant to any such term. The Borrower and the applicable Funds are not
       in violation of any term of their respective  charter,  by-laws or trust
       agreement,  and  such  Borrower  and  the  applicable  Funds  are not in
       violation of any material  term of any  agreement or instrument to which
       they are a party,  or to the best of such Borrower's  knowledge,  of any
       judgment,  decree,  order,  statute,  rule  or  governmental  regulation
       applicable to them;

                (d) SEC COMPLIANCE.  The Borrower and the applicable  Funds are
       in  compliance  in all  material  respects  with all  federal  and state
       securities  or similar  laws and  regulations,  including  all  material
       rules,  regulations  and  administrative  orders of the  Securities  and
       Exchange Commission (the "SEC") and applicable Blue Sky authorities. The
       Borrower  and the  applicable  Funds are in  compliance  in all material
       respects  with all of the  provisions of the  Investment  Company Act of
       1940,  and such  Borrower  has filed all  reports  with the SEC that are
       required of it or the applicable Funds;

                (e) LITIGATION.  There is no action, suit or proceeding pending
       or, to the best of the  Borrower's  knowledge,  threatened  against such
       Borrower or the  applicable  Funds in any court or before any arbitrator
       or  governmental  body which seeks to restrain  any of the  transactions
       contemplated by this Agreement or which, if adversely determined,  could
       have a material  adverse effect on the assets or business  operations of
       such  Borrower or the  applicable  Funds or the ability of such Borrower
       and the applicable Funds to pay and perform their obligations  hereunder
       and under the Notes;

                (f) BORROWERS'  RELATIONSHIP TO FUNDS.  The assets of each Fund
       for whose  benefit  Loans are  borrowed by the  applicable  Borrower are
       subject  to and  liable  for such  Loans and are  available  (except  as
       subordinated to borrowings under the NationsBank  committed facility) to
       the applicable Borrower for the repayment of such Loans; and

                (g) YEAR 2000  PREPAREDNESS.  Each Borrower has (i) initiated a
       review and  assessment  of all areas within its business and  operations
       (including  those  affected by suppliers,  vendors and  customers)  that
       could be  adversely  affected by the "Year 2000  Problem"  (that is, the
       risk that computer  applications  used by such Borrower may be unable to
       recognize  and  perform  properly  date-sensitive   functions  involving
       certain  dates  prior to and any date after  December  31,  1999),  (ii)
       developed a plan and timeline for  addressing the Year 2000 Problem on a
       timely basis, and (iii) to date, implemented that

<PAGE>

       plan in accordance  with that  timetable.  Based on the foregoing,  such
       Borrower  reasonably  believes that all computer  applications  that are
       material to its business and  operations  are  reasonably  expected on a
       timely basis to be able to perform properly date-sensitive functions for
       all dates  before  and after  January  1, 2000  (that is, be "Year  2000
       compliant"),  except to the  extent  that a  failure  to do so could not
       reasonably be expected to have a material  adverse  effect on the assets
       or business  operations of such Borrower or the applicable  Funds or the
       ability of such  Borrower  and the  applicable  Funds to pay and perform
       their obligations hereunder and under the Note.

       13.  AFFIRMATIVE  COVENANTS  OF THE  BORROWERS.  Until  such time as all
amounts of principal  and  interest due to CAPCO by a Borrower  pursuant to any
Loan made to such Borrower is irrevocably  paid in full, and until the Facility
is terminated, such Borrower (for itself and on behalf of its respective Funds)
agrees:

                (a) To  deliver to CAPCO as soon as  possible  and in any event
       within  ninety  (90)  days  after  the end of each  fiscal  year of such
       Borrower and the applicable Funds, Statements of Assets and Liabilities,
       Statements of Operations and Statements of Changes in Net Assets of each
       applicable  Fund for such fiscal year,  as set forth in each  applicable
       Fund's Annual Report to shareholders  together with a calculation of the
       maximum  amount  which  each  applicable  Fund  could  borrow  under its
       Borrowing Limit as of the end of such fiscal year;

                (b) To deliver to CAPCO as soon as  available  and in any event
       within seventy-five (75) days after the end of each semiannual period of
       such  Borrower  and the  applicable  Funds,  Statements  of  Assets  and
       Liabilities,  Statement of Operations  and  Statements of Changes in Net
       Assets of each applicable Fund as of the end of such semiannual  period,
       as set forth in each applicable Funds Semiannual Report to shareholders,
       together with a calculation of the maximum amount which each  applicable
       Fund  could  borrow  under  its  Borrowing  Limit  at the  end  of  such
       semiannual period;

                (c) To deliver to CAPCO prompt notice of the  occurrence of any
       event or  condition  which  constitutes,  or is likely  to result  in, a
       change in such Borrower or any applicable Fund which could reasonably be
       expected to materially  adversely  affect the ability of any  applicable
       Fund to  promptly  repay  outstanding  Loans made for its benefit or the
       ability of such Borrower to perform its obligations under this Agreement
       or the Note;

                (d) To do,  or  cause  to be  done,  all  things  necessary  to
       preserve  and keep in full  force  and  effect  the  corporate  or trust
       existence  of such  Borrower  and all  permits,  rights  and  privileges
       necessary  for  the  conduct  of its  businesses  and to  comply  in all
       material  respects with all  applicable  laws,  regulations  and orders,
       including without limitation,  all rules and regulations  promulgated by
       the SEC;

<PAGE>

                (e) To  promptly  notify  CAPCO of any  litigation,  threatened
       legal  proceeding or  investigation  by a governmental  authority  which
       could  materially  affect the ability of such Borrower or the applicable
       Funds to promptly repay the outstanding Loans or otherwise perform their
       obligations hereunder;

                (f) In the event a Loan for the benefit of a particular Fund is
       not repaid in full  within 10 days  after the date it is  borrowed , and
       until  such Loan is repaid in full,  to  deliver  to CAPCO,  within  two
       business  days  after  each  Friday  occurring  after  such 10th day,  a
       statement setting forth the total assets of such Fund as of the close of
       business on each such Friday; and

                (g) Upon the  request of CAPCO  which may be made by CAPCO from
       time to time in the event  CAPCO in good faith  believes  that there has
       been a material  adverse  change in the capital  markets  generally,  to
       deliver  to CAPCO,  within two  business  days  after  such  request,  a
       statement  setting forth the total assets of each Fund for whose benefit
       a Loan is outstanding on the date of such request.

       14. NEGATIVE COVENANTS OF THE BORROWERS.  Until such time as all amounts
of principal and interest due to CAPCO by a Borrower  pursuant to any Loan made
to such  Borrower  is  irrevocably  paid in full,  and  until the  Facility  is
terminated,  such Borrower (for itself and on behalf of its  respective  Funds)
agrees:

                (a) Not to incur any  indebtedness  for  borrowed  money (other
       than pursuant to the One Hundred Million Dollar ($100,000,000) committed
       Master Revolving Credit Facility with NationsBank, the Two Hundred Fifty
       Million Dollar ($250,000,000) committed Master Revolving Credit Facility
       with CAPCO and for  overdrafts  incurred at the  custodian  of the Funds
       from time to time in the normal  course of  business)  except the Loans,
       without the prior  written  consent of CAPCO,  which consent will not be
       unreasonably withheld; and

                (b) Not to dissolve or  terminate  its  existence,  or merge or
       consolidate   with  any  other   person  or  entity,   or  sell  all  or
       substantially  all of its  assets in a single  transaction  or series of
       related  transactions  (other than assets  consisting of margin  stock),
       each without the prior written consent of CAPCO,  which consent will not
       be  unreasonably  withheld;  provided  that a Borrower  may without such
       consent merge,  consolidate  with, or purchase  substantially all of the
       assets of, or sell  substantially  all of its  assets to, an  affiliated
       investment  company or series thereof,  as provided for in Rule 17a-8 of
       the Investment Company Act of 1940.

       15. EVENTS OF DEFAULT. If any of the following events (each an "Event of
Default")  shall  occur  (it being  understood  that an Event of  Default  with
respect to one Fund or Borrower  shall not  constitute an Event of Default with
respect to any other Fund or Borrower):

                (a) Any  Borrower  or Fund  shall  default  in the  payment  of
       principal or interest on any Loan or any other fee due  hereunder  for a
       period of five (5) days after the same

<PAGE>

       becomes due and  payable,  whether at  maturity  or with  respect to any
       Facility Fee at a date fixed for the payment thereof;

                (b) Any Borrower or Fund shall default in the performance of or
       compliance with any term contained in Section 13 hereof and such default
       shall not have been  remedied  within  thirty  (30) days  after  written
       notice thereof shall have been given such Borrower or Fund by CAPCO;

                (c) Any Borrower or Fund shall default in the performance of or
       compliance with any term contained in Section 14 hereof;

                (d) Any Borrower or Fund shall  default in the  performance  or
       compliance  with any other term contained  herein and such default shall
       not have been  remedied  within  thirty (30) days after  written  notice
       thereof shall have been given such Borrower or Fund by CAPCO;

                (e) Any  representation  or warranty made by a Borrower or Fund
       herein or pursuant hereto shall prove to have been false or incorrect in
       any material respect when made;

                (f) An event of default shall occur and be continuing under any
       other facility;  then, in any event, and at any time thereafter,  if any
       Event of Default shall be continuing, CAPCO may by written notice to the
       applicable  Borrower or Fund (i)  terminate the Facility with respect to
       such  Borrower or Fund and (ii)  declare the  principal  and interest in
       respect of any outstanding  Loans with respect to such Borrower or Fund,
       and all other  amounts due  hereunder  with respect to such  Borrower or
       Fund,  to be  immediately  due and payable  whereupon  the principal and
       interest in respect  thereof and all other amounts due  hereunder  shall
       become forthwith due and payable without presentment, demand, protest or
       other  notice of any  kind,  all of which  are  expressly  waived by the
       Borrowers.

       16.  NEW  BORROWERS;  NEW  FUNDS.  So long as no  Event  of  Default  or
condition  which,  with the  passage of time or the giving of notice,  or both,
would  constitute or become an Event of Default has occurred and is continuing,
and with the prior  consent of CAPCO,  which  consent will not be  unreasonably
withheld:

                (a) Any investment company that becomes part of the same "group
       of  investment  companies"  (as that term is defined in Rule 11a-3 under
       the  Investment  Company Act of 1940) as the original  Borrowers to this
       Agreement,  may, by  submitting  an amended  Schedule A and Exhibit B to
       this  Agreement to CAPCO (which  amended  Schedule A and Exhibit B shall
       replace the corresponding Schedule and Exhibit which are, then a part of
       this  Agreement)  and  such  other  documents  as CAPCO  may  reasonably
       request,  become a party to this  Agreement  and may become a "Borrower"
       hereunder; and

<PAGE>

                (b) A Borrower  may, by  submitting  an amended  Schedule A and
       Exhibit B to this  Agreement  to CAPCO  (which  amended  Schedule  A and
       Exhibit B shall replace the corresponding Schedule and Exhibit which are
       then a part of this  Agreement),  add additional Funds for whose benefit
       such Borrower may borrow Loans.  No such amendment of Schedule A to this
       Agreement shall amend the Borrowing Limit applicable to any Fund without
       the prior approval of CAPCO.

       17. LIMITED  RECOURSE.  CAPCO agrees (i) that any claim,  liability,  or
obligation  arising  hereunder  or under the Note  whether  on  account  of the
principal of any Loan,  interest thereon,  or any other amount due hereunder or
thereunder  shall be satisfied  only from the assets of the  specific  Fund for
whose  benefit a Loan is  borrowed  and in any event in an amount not to exceed
the outstanding  principal amount of any Loan borrowed for such Fund's benefit,
together  with  accrued and unpaid  interest  due and owing  thereon,  and such
Fund's  share  of any  other  amount  due  hereunder  and  under  the  Note (as
determined in accordance with the provisions hereof) and (ii) that no assets of
any fund shall be used to satisfy any claim,  liability,  or obligation arising
hereunder or under the Note with respect to the outstanding principal amount of
any Loan  borrowed  for the benefit of any other Fund or any accrued and unpaid
interest  due and owing  thereon or such other Fund's share of any other amount
due  hereunder  and  under  the  Note (as  determined  in  accordance  with the
provisions hereof).

       18. REMEDIES ON DEFAULT. In case any one or more Events of Default shall
occur and be continuing, CAPCO may proceed to protect and enforce its rights by
an action at law, suit in equity or other appropriate proceedings,  against the
applicable  Borrower(s)  and/or  Fund(s),  as the case may be. In the case of a
default  in the  payment of any  principal  or  interest  on any Loan or in the
payment of any fee due hereunder,  the relevant  Fund(s) (to be allocated among
such Funds as the Borrowers deem  appropriate)  shall pay to CAPCO such further
amount as shall be  sufficient  to cover the cost and  expense  of  collection,
including, without limitation, reasonable attorney's fees and expenses.

       19. NO WAIVER OF  REMEDIES.  No course of dealing or failure or delay on
the part of CAPCO in exercising any right or remedy hereunder or under the Note
shall  constitute a waiver of any right or remedy  hereunder or under the Note,
nor shall any partial  exercise of any right or remedy  hereunder  or under the
Note preclude any further  exercise  thereof or the exercise of any other right
or remedy  hereunder  or under the Note.  Such  rights and  remedies  expressly
provided are cumulative and not exclusive of any rights or remedies which CAPCO
would otherwise have.

       20.  EXPENSES.  The  Fund(s)  (to be  allocated  among  the Funds as the
Borrowers deem  appropriate)  shall pay on demand all reasonable  out-of-pocket
costs and expenses (including reasonable attorney's fees and expenses) incurred
by  CAPCO  in  connection  with  the  collection  and  any  other   enforcement
proceedings of or regarding this Agreement, any Loan or the Note.

       21.  BENEFIT OF AGREEMENT.  This Agreement and the Note shall be binding
upon  and  inure  for  the  benefit  of and be  enforceable  by the  respective
successors  and assigns of the parties  hereto;  provided that no party to this
Agreement  or the Note may  assign any of its rights  hereunder  or  thereunder
without the prior written consent of the other parties.

<PAGE>

       22.  NOTICES.  All  notices  hereunder  and all  written,  facsimile  or
telecopied  confirmations  of Oral Requests made hereunder shall be sent to the
Borrowers as indicated on EXHIBIT B and to CAPCO as indicated on EXHIBIT C.

       23.  MODIFICATIONS.  No provision  of this  Agreement or the Note may be
waived,  modified  or  discharged  except by mutual  written  agreement  of all
parties. THIS WRITTEN LOAN AGREEMENT AND THE NOTE REPRESENT THE FINAL AGREEMENT
BETWEEN  THE  PARTIES  AND  MAY  NOT BE  CONTRADICTED  BY  EVIDENCE  OF  PRIOR,
CONTEMPORANEOUS  OR SUBSEQUENT  ORAL  AGREEMENTS  OF THE PARTIES.  THERE ARE NO
UNWRITTEN AGREEMENTS BETWEEN THE PARTIES.

       24. GOVERNING LAW AND JURISDICTION.  This Agreement shall be governed by
and construed in accordance  with the laws of the state of Texas without regard
to the choice of law provisions thereof.

       25. TRUST  DISCLAIMER.  Neither the  shareholders,  trustees,  officers,
employees and other agents of any Borrower or Fund shall be personally bound by
or liable for any indebtedness,  liability or obligation hereunder or under the
Note nor shall resort be had to their private  property for the satisfaction of
any obligation or claim hereunder.

If this letter  correctly  reflects your agreement with us, please execute both
copies hereof and return one to us,  whereupon this Agreement  shall be binding
upon the Borrowers, the Funds and CAPCO.

Sincerely,

USAA CAPITAL CORPORATION


By:      /S/ LAURIE B. BLANK
         ------------------------
         Laurie B. Blank
         Vice President-Treasurer

<PAGE>

AGREED AND ACCEPTED this 12th
Day of January, 1999.

USAA MUTUAL FUND, INC.,
on behalf of and for the benefit 
of its series of Funds as set forth
on Schedule A to this Agreement


By:      /S/ MICHAEL J.C. ROTH
         ------------------------
         Michael J.C. Roth
         President


USAA INVESTMENT  TRUST,
on behalf of and for the benefit
of its series of Funds as set forth
on Schedule A to this Agreement


By:      /S/ MICHAEL J.C. ROTH
         ------------------------
         Michael J.C. Roth
         President


USAA TAX EXEMPT FUND,  INC.,
on behalf of and for the benefit
of its series of Funds as set forth
on Schedule A to this Agreement


By:      /S/ MICHAEL J.C. ROTH
         ------------------------
         Michael J.C. Roth
         President


USAA STATE  TAX-FREE  TRUST,
on behalf of and for the benefit
of its series of Funds as set forth
on Schedule A to this Agreement


By:      /S/ MICHAEL J.C. ROTH
         ------------------------
         Michael J.C. Roth
         President

<PAGE>

                                   SCHEDULE A
                                   ----------

                       FUNDS FOR WHOSE BENEFIT LOANS CAN
                      BE BORROWED UNDER FACILITY AGREEMENT

       BORROWER                      FUNDS                    BORROWING LIMIT
       --------                      -----                    ---------------  

                                                           (Maximum  percent of
                                                           total  assets  which
                                                           can   be    borrowed
                                                           under  Facility  and
                                                           the        committed
                                                           facility with CAPCO)
USAA MUTUAL FUND, INC.       USAA Aggressive Growth        5% of Total Assets
                             USAA Growth & Income                    "
                             USAA Income Stock                       "
                             USAA Short-Term Bond                    "
                             USAA Money Market                       "
                             USAA Growth                             "
                             USAA Income                             "
                             USAA S&P 500 Index                      "
                             USAA Science & Technology               "
                             USAA First Start Growth                 "

USAA INVESTMENT TRUST        USAA Cornerstone Strategy               "
                             USAA Gold                               "
                             USAA International                      "
                             USAA World Growth                       "
                             USAA GNMA Trust                         "
                             USAA Treasury Money Market Trust        "
                             USAA Emerging Markets                   "
                             USAA Growth and Tax Strategy            "
                             USAA Balanced Strategy                  "
                             USAA Growth Strategy                    "
                             USAA Income Strategy                    "

USAA TAX EXEMPT FUND, INC.   USAA Long-Term                          "
                             USAA Intermediate-Term                  "
                             USAA Short-Term                         "
                             USAA Tax Exempt Money Market            "
                             USAA California Bond                    "
                             USAA California Money Market            "
                             USAA New York Bond                      "
                             USAA New York Money Market              "
                             USAA Virginia Bond                      "
                             USAA Virginia Money Market              "

USAA STATE TAX-FREE TRUST    USAA Florida Tax-Free Income            "
                             USAA Florida Tax-Free Money Market      "
                             USAA Texas Tax-Free Income              "
                             USAA Texas Tax-Free Money Market        "

<PAGE>

                                                                      EXHIBIT A
                                                                      ---------

                          MASTER GRID PROMISSORY NOTE


U.S. $500,000,000                                       Dated: January 12, 1999


       FOR VALUE  RECEIVED,  each of the  undersigned  (each a  "Borrower"  and
collectively the "Borrowers"),  severally and not jointly, on behalf of and for
the benefit of the series of funds  comprising  each such Borrower as listed on
Schedule A to the  Agreement as defined  below (each a "Fund" and  collectively
the "Funds") promises to pay to the order of USAA Capital Corporation ("CAPCO")
at CAPCO's  office  located at 9800  Fredericksburg  Road,  San Antonio,  Texas
78288,  in  lawful  money of the  United  States  of  America,  in  immediately
available  funds,  the  principal  amount  of all  Loans  made by CAPCO to such
Borrower for the benefit of the applicable  Funds under the Facility  Agreement
Letter dated January 12, 1999 (as amended or modified, the "Agreement"),  among
the  Borrowers and CAPCO,  together with interest  thereon at the rate or rates
set forth in the Agreement.  All payments of interest and principal outstanding
shall be made in accordance with the terms of the Agreement.

       This Note  evidences  Loans made  pursuant  to, and is  entitled  to the
benefits  of,  the  Agreement.  Terms not  defined in this Note shall be as set
forth in the Agreement.

       CAPCO is authorized to endorse the  particulars  of each Loan  evidenced
hereby  on  the  attached  Schedule  and  to  attach  additional  Schedules  as
necessary,  provided  that the failure of CAPCO to do so or to do so accurately
shall not affect the obligations of any Borrower (or the Fund for whose benefit
it is borrowing) hereunder.

       Each Borrower waives all claims to  presentment,  demand,  protest,  and
notice  of  dishonor.  Each  Borrower  agrees  to pay all  reasonable  costs of
collection,  including  reasonable  attorney's  fees  in  connection  with  the
enforcement of this Note.

       CAPCO hereby agrees (i) that any claim, liability, or obligation arising
hereunder  or under the  Agreement  whether on account of the  principal of any
Loan,  interest thereon,  or any other amount due hereunder or thereunder shall
be satisfied only from the assets of the specific Fund for whose benefit a Loan
is  borrowed  and in any  event in an  amount  not to  exceed  the  outstanding
principal  amount of any Loan borrowed for such Fund's  benefit,  together with
accrued and unpaid interest due and owing thereon, and such Fund's share of any
other amount due hereunder and under the Agreement (as determined in accordance
with the provisions of the Agreement) and (ii) that no assets of any Fund shall
be used to satisfy any claim,  liability,  or obligation  arising  hereunder or
under the Agreement  with respect to the  outstanding  principal  amount of any
Loan  borrowed  for the  benefit  of any other Fund or any  accrued  and unpaid
interest  due and owing  thereon or such other Fund's share of any other amount
due hereunder and under the  Agreement  (as  determined in accordance  with the
provisions of the Agreement).

<PAGE>

       Neither the shareholders, trustees, officers, employees and other agents
of any  Borrower  or Fund  shall  be  personally  bound  by or  liable  for any
indebtedness,  liability  or  obligation  hereunder or under the Note nor shall
resort be had to their private  property for the satisfaction of any obligation
or claim hereunder.

       Loans under the Agreement and this Note are  subordinated  to loans made
under the  $100,000,000  364-day  committed  Mater  Revolving  Credit  Facility
Agreement  between the Borrowers and  NationsBank,  N.A.  (NationsBank),  dated
January 13,  1999,  in the manner and to the extent set forth in the  Agreement
among the Borrowers, CAPCO and NationsBank, dated January 13, 1999.

       This Note shall be governed by the laws of the state of Texas.

                                                  USAA MUTUAL FUND, INC.,
                                                  on  behalf  of  and  for  the
                                                  benefit   of  its  series  of
                                                  Funds   as   set   forth   on
                                                  Schedule A to the Agreement


                                                  By:  /S/ MICHAEL J.C. ROTH
                                                       ------------------------
                                                       Michael J.C. Roth
                                                       President


                                                  USAA INVESTMENT TRUST,
                                                  on  behalf  of  and  for  the
                                                  benefit   of  its  series  of
                                                  Funds   as   set   forth   on
                                                  Schedule A to the Agreement


                                                  By:  /S/ MICHAEL J.C. ROTH
                                                       ------------------------
                                                       Michael J.C. Roth
                                                       President

<PAGE>

                                                  USAA  TAX   EXEMPT   FUND,
                                                  INC.,  on  behalf  of and for
                                                  the  benefit of its series of
                                                  Funds   as   set   forth   on
                                                  Schedule A to the Agreement


                                                  By:  /S/ MICHAEL J.C. ROTH
                                                       ------------------------
                                                       Michael J.C. Roth
                                                       President


                                                  USAA STATE TAX-FREE TRUST,
                                                  on  behalf  of  and  for  the
                                                  benefit   of  its  series  of
                                                  Funds   as   set   forth   on
                                                  Schedule A to the Agreement


                                                  By:  /S/ MICHAEL J.C. ROTH
                                                       ------------------------
                                                       Michael J.C. Roth
                                                       President

<PAGE>

                         LOANS AND PAYMENT OF PRINCIPAL

This  schedule  (grid) is  attached to and made a part of the  Promissory  Note
dated January 12, 1999,  executed by USAA MUTUAL FUND,  INC.,  USAA  INVESTMENT
TRUST,  USAA TAX EXEMPT FUND,  INC. AND USAA STATE  TAX-FREE TRUST on behalf of
and for the  benefit  of the  series of funds  comprising  each  such  Borrower
payable to the order of USAA CAPITAL CORPORATION.

[GRID]
Date of Loan

Borrower
and Fund

Amount of 
Loan

Type of Rate and
Interest Rate on Date 
of Borrowing

Amount of 
Principal Repaid

Date of 
Repayment

Other 
Expenses

Notation made 
by

<PAGE>

                                                                      EXHIBIT B

                            USAA CAPITAL CORPORATION
                                MASTER REVOLVING
                           CREDIT FACILITY AGREEMENT
                           BORROWER INFORMATION SHEET


BORROWER:  USAA MUTUAL FUND, INC., USAA INVESTMENT TRUST, USAA TAX EXEMPT FUND,
           INC. AND USAA STATE TAX-FREE TRUST

ADDRESS FOR NOTICES AND OTHER COMMUNICATIONS TO THE BORROWER:

                          9800 Fredericksburg Road
                          San Antonio, Texas 78288 (For Federal Express, 78240)
                          Attention:       John W. Saunders, Jr.
                                           Senior Vice President,
                                           Fixed Income Investments

                          Telephone:       (210) 498-7320
                          Telecopy:        (210) 498-5689

                                           David G. Peebles
                                           Senior Vice President,
                                           Equity Investments

                          Telephone:       (210) 498-7340
                          Telecopy:        (210) 498-2954

ADDRESS FOR BORROWING AND PAYMENTS:

                          9800 Fredericksburg Road
                          San Antonio, Texas 78288
                          Attention:       Caryl J. Swann

                          Telephone:       (210) 498-7303
                          Telecopy:        (210) 498-0382 or 498-7819
                          Telex:           767424

INSTRUCTIONS FOR PAYMENTS TO BORROWER:

WE PAY VIA:  __X__FED FUNDS   _____CHIPS

<PAGE>

TO:    (PLEASE  PLACE  BANK NAME,  CORRESPONDENT  NAME (IF  APPLICABLE),  CHIPS
       AND/OR FED FUNDS ACCOUNT NUMBER BELOW)

STATE STREET BANK AND TRUST COMPANY, BOSTON, MASSACHUSETTS
- ----------------------------------------------------------

ABA #011-00-0028
- ----------------

USAA MUTUAL FUND, INC.
======================

USAA AGGRESSIVE GROWTH FUND                 ACCT.# 6938-502-9
- -------------------------------------------------------------
USAA GROWTH & INCOME FUND                   ACCT.# 6938-519-3
- -------------------------------------------------------------
USAA INCOME STOCK FUND                      ACCT.# 6938-495-6
- -------------------------------------------------------------
USAA SHORT-TERM BOND FUND                   ACCT.# 6938-517-7
- -------------------------------------------------------------
USAA MONEY MARKET FUND                      ACCT.# 6938-498-0
- -------------------------------------------------------------
USAA GROWTH FUND                            ACCT.# 6938-490-7
- -------------------------------------------------------------
USAA INCOME FUND                            ACCT.# 6938-494-9
- -------------------------------------------------------------
USAA S&P 500 INDEX FUND                     ACCT.# 6938-478-2
- -------------------------------------------------------------
USAA SCIENCE & TECHNOLOGY FUND              ACCT.# 6938-515-1
- -------------------------------------------------------------
USAA FIRST START GROWTH FUND                ACCT.# 6938-468-3
- -------------------------------------------------------------

USAA INVESTMENT TRUST
=====================

USAA CORNERSTONE STRATEGY FUND              ACCT.# 6938-487-3
- -------------------------------------------------------------
USAA GOLD FUND                              ACCT.# 6938-488-1
- -------------------------------------------------------------
USAA INTERNATIONAL FUND                     ACCT.# 6938-497-2
- -------------------------------------------------------------
USAA WORLD GROWTH FUND                      ACCT.# 6938-504-5
- -------------------------------------------------------------
USAA GNMA TRUST                             ACCT.# 6938-486-5
- -------------------------------------------------------------
USAA TREASURY MONEY MARKET TRUST            ACCT.# 6938-493-1
- -------------------------------------------------------------

<PAGE>

USAA EMERGING MARKETS FUND                  ACCT.# 6938-501-1
- -------------------------------------------------------------
USAA GROWTH AND TAX STRATEGY FUND           ACCT.# 6938-509-4
- -------------------------------------------------------------
USAA BALANCED STRATEGY FUND                 ACCT.# 6938-507-8
- -------------------------------------------------------------
USAA GROWTH STRATEGY FUND                   ACCT.# 6938-510-2
- -------------------------------------------------------------
USAA INCOME STRATEGY FUND                   ACCT.# 6938-508-6
- -------------------------------------------------------------

USAA TAX EXEMPT FUND, INC.
==========================

USAA LONG-TERM FUND                         ACCT.# 6938-492-3
- -------------------------------------------------------------
USAA INTERMEDIATE-TERM FUND                 ACCT.# 6938-496-4
- -------------------------------------------------------------
USAA SHORT-TERM FUND                        ACCT.# 6938-500-3
- -------------------------------------------------------------
USAA TAX EXEMPT MONEY MARKET FUND           ACCT.# 6938-514-4
- -------------------------------------------------------------
USAA CALIFORNIA BOND FUND                   ACCT.# 6938-489-9
- -------------------------------------------------------------
USAA CALIFORNIA MONEY MARKET FUND           ACCT.# 6938-491-5
- -------------------------------------------------------------
USAA NEW YORK BOND FUND                     ACCT.# 6938-503-7
- -------------------------------------------------------------
USAA NEW YORK MONEY MARKET FUND             ACCT.# 6938-511-0
- -------------------------------------------------------------
USAA VIRGINIA BOND FUND                     ACCT.# 6938-512-8
- -------------------------------------------------------------
USAA VIRGINIA MONEY MARKET FUND             ACCT.# 6938-513-6
- -------------------------------------------------------------

USAA STATE TAX-FREE TRUST
=========================

USAA FLORIDA TAX-FREE INCOME FUND           ACCT.# 6938-473-3
- -------------------------------------------------------------
USAA FLORIDA TAX-FREE MONEY MARKET FUND     ACCT.# 6938-467-5
- -------------------------------------------------------------
USAA TEXAS TAX-FREE INCOME FUND             ACCT.# 6938-602-7
- -------------------------------------------------------------
USAA TEXAS TAX-FREE MONEY MARKET FUND       ACCT.# 6938-601-9
- -------------------------------------------------------------

<PAGE>

                                                                      EXHIBIT C
                                                                      ---------

                      ADDRESS FOR USAA CAPITAL CORPORATION

                            USAA Capital Corporation
                            9800 Fredericksburg Road
                            San Antonio, Texas 78288

                            Attention:          Laurie B. Blank
                            Telephone No.:      (210) 498-0825
                            Telecopy No.:       (210) 498-6566

<PAGE>

                                                                      EXHIBIT D
                                                                      ---------
                             OFFICER'S CERTIFICATE
                             ---------------------

The undersigned  hereby certifies that he is the duly elected Secretary of USAA
Mutual Fund, Inc., USAA Investment  Trust,  USAA Tax Exempt Fund, Inc. and USAA
State Tax-Free  Trust and that he is authorized to execute this  Certificate on
behalf of USAA Mutual Fund, Inc., USAA Investment  Trust, USAA Tax Exempt Fund,
Inc. and USAA State Tax-Free Trust. The undersigned hereby further certifies to
the following:

The following  individuals  are duly authorized to act on behalf of USAA Mutual
Fund,  Inc., USAA Investment  Trust,  USAA Tax Exempt Fund, Inc. and USAA State
Tax-Free Trust, by transmitting telephonic, telex, or telecopy instructions and
other  communications  with regard to borrowing  and  payments  pursuant to the
uncommitted  Master Revolving  Credit Agreement with USAA Capital  Corporation.
The  signature  set  opposite  the  name  of  each  individual  below  is  that
individual's genuine signature.

         NAME                       OFFICE                     SIGNATURE
         ----                       ------                     ---------

Michael J.C. Roth          President                  /S/ MICHAEL J.C. ROTH
                                                      -------------------------

John W. Saunders, Jr.      Senior Vice President,
                           Fixed Income Investments   /S/ JOHN W. SAUNDERS, JR.
                                                      -------------------------

David G. Peebles           Senior Vice President,
                           Equity Investments         /S/ DAVID G. PEEBLES
                                                      -------------------------

Kenneth E. Willmann        Vice President,
                           Mutual Fund Portfolios     /S/ KENNETH E. WILLMANN
                                                      -------------------------

Sherron A. Kirk            Vice President,
                           Controller                 /S/ SHERRON A. KIRK
                                                      -------------------------

Caryl J. Swann             Executive Director,
                           Mutual Fund Analysis
                           and Support                /S/ CARYL J. SWANN
                                                      -------------------------

IN WITNESS  WHEREOF,  I have executed this  Certificate  as of this 12th day of
January, 1999.


                                                      /S/ MICHAEL D. WAGNER
                                                      -------------------------
                                                      Michael D. Wagner
                                                      Secretary

<PAGE>

I, Michael J.C.  Roth,  President of USAA Mutual Fund,  Inc.,  USAA  Investment
Trust,  USAA Tax Exempt Fund, Inc. And USAA State Tax-Free Trust hereby certify
that  Michael D. Wagner is, and has been at all times since a date prior to the
date of this Certificate,  the duly elected, qualified, and acting Secretary of
USAA Mutual Fund, Inc., USAA Investment  Trust,  USAA Tax Exempt Fund, Inc. And
USAA State  Tax-Free  Trust and that the  signature set forth above is his true
and correct signature.

DATE: January 12, 1999                                /S/ MICHAEL J.C. ROTH
                                                      -------------------------
                                                      Michael J.C. Roth
                                                      President

<PAGE>
                                 EXHIBIT 8(j)
<PAGE>

January 13, 1999



USAA Mutual Fund, Inc.,
USAA Investment Trust,
USAA Tax Exempt Fund, Inc., and 
USAA State Tax-Free Trust, on behalf of and for
the benefit of the series 
of funds comprising each such Borrower
as set forth on Schedule A hereto 
9800 Fredericksburg Road 
San Antonio, Texas 78288

Attention:      Michael J.C. Roth, President

Gentlemen:

This  Facility  Agreement  Letter (this  "Agreement")  sets forth the terms and
conditions  for  loans  (each a "Loan"  and  collectively  the  "Loans")  which
NationsBank,  N.A.,  successor by merger to  NationsBank  of Texas,  N.A.  (the
"Bank"),  agrees to make  during the period  commencing  January  13,  1999 and
ending January 12, 2000 (the "Facility Period") to USAA Mutual Fund, Inc., USAA
Investment  Trust,  USAA Tax Exempt Fund,  Inc., and USAA State Tax-Free Trust,
and each  investment  company  which may become a party hereto  pursuant to the
terms of this Agreement (each a "Borrower" and collectively  the  "Borrowers"),
each of which is executing  this  Agreement on behalf of and for the benefit of
the series of funds  comprising  each such  Borrower as set forth on Schedule A
hereto (as hereafter  modified or amended in accordance  with the terms hereof)
(each a "Fund" and collectively  the "Funds"),  under a master revolving credit
facility (the "Facility"). This Agreement replaces in its entirety that certain
Facility  Agreement  Letter dated January 14, 1998,  as  heretofore  amended or
modified, between the Borrowers and the Bank. The Bank and the Borrowers hereby
agree as follows:

       1. AMOUNT.  The aggregate  principal  amount of the Loans to be advanced
under this Facility shall not exceed, at any one time outstanding,  One Hundred
Million  United States  Dollars (U.S.  $100,000,000)  (the  "Commitment").  The
aggregate principal amount of the Loans which may be borrowed by a Borrower for
the benefit of a particular  Fund under the  Facility and the Other  Facilities
(hereinafter  defined) shall not exceed the percentage (the "Borrowing  Limit")
of the total assets of such Fund as set forth on Schedule A hereto.

       2. PURPOSE AND  LIMITATIONS  ON  BORROWINGS.  Each Borrower will use the
proceeds of each Loan made to it solely for temporary or emergency  purposes of
the Fund for whose  benefit it is  borrowing  in  accordance  with such  Fund's
Borrowing  Limit and  prospectus in effect at the time of such Loan.  Portfolio
securities  may not be  purchased  by a Fund while there is a Loan  outstanding
under the Facility and/or a loan outstanding under the Other Facilities for the
benefit of such Fund, if the aggregate amount of such Loan and such other loans
exceed 5% of the total assets of such

<PAGE>

Fund.  The  Borrowers  will not,  and will not permit any Fund to,  directly or
indirectly,  use any proceeds of any Loan for any purpose  which would  violate
any provision of any  applicable  statute,  regulation,  order or  restriction,
including, without limitation,  Regulation U, Regulation T, Regulation X or any
other regulation of the Board of Governors of the Federal Reserve System or the
Securities  Exchange Act of 1934,  as amended.  If  requested by the Bank,  the
Borrowers  will promptly  furnish the Bank with a statement in conformity  with
the requirements of Federal Reserve Form U-1 as referred to in Regulation U.

       3.  BORROWING  RATE AND MATURITY OF LOANS.  The principal  amount of the
Loans  outstanding  from time to time shall bear  interest  at a rate per annum
equal to, at the option of the applicable Borrower(s), (i) the aggregate of the
Federal  Funds Rate (as defined  below) plus .28 of one percent  (1%) (28 basis
points) or (ii) the aggregate of the London Interbank  Offered Rate (as defined
below) plus 28 basis points.  The rate of interest  payable on such outstanding
amounts  shall  change on each date that the Federal  Funds Rate shall  change.
Interest  on the Loans shall be  calculated  on the basis of a year of 360 days
and the actual days elapsed but shall not exceed the highest lawful rate.  Each
Loan  will  be for an  established  number  of days  to be  agreed  upon by the
applicable Borrower(s) and the Bank and, in the absence of such agreement, will
mature on the earlier of three  months  after the date of such Loan or the last
day of the  Facility  Period.  The term  "Federal  Funds Rate," as used herein,
shall mean the overnight  rate for Federal funds  transactions  between  member
banks of the Federal Reserve  System,  as published by the Federal Reserve Bank
of New York or, if not so published, as determined in good faith by the Bank in
accordance with its customary practices; and the term "London Interbank Offered
Rate," as used  herein,  shall  mean the rate per annum  (rounded  upwards,  if
necessary,  to the nearest 1/100 of 1%) appearing on Telerate Page 3750 (or any
successor page) as the London Interbank offered rate for deposits in Dollars at
approximately  11:00 a.m.  London time two business days prior to the first day
of the interest period (of 7 or 14 days or one, two or three months as selected
by the  Borrower(s))  for which the London  Interbank  Offered Rate is to be in
effect,  as  adjusted  by the Bank in good  faith  and in  accordance  with its
customary  practices  for any reserve  costs  imposed on the Bank under Federal
Reserve Board  Regulation D with respect to  "Euro-currency  Liabilities".  The
London Interbank  Offered Rate shall not be available  hereunder if it would be
unlawful  for the Bank to make or maintain  Loans based on such rate or if such
rate does not, in the good faith judgment of the Bank,  fairly reflect the cost
to the Bank of making or maintaining  Loans. The London Interbank  Offered Rate
shall  not be  available  for any  interest  period  which,  if such  rate were
available,  would begin after the occurrence and during the  continuation of an
Event of Default (as defined  below).  Any past due  principal  and/or  accrued
interest  shall bear interest at a rate per annum equal to the aggregate of the
Federal Funds Rate plus 1.125 percent (112.5 basis points) and shall be payable
on demand.  If the applicable  Borrowers do not  affirmatively  elect to have a
Loan or Loans bear interest based on the London Interbank Offered Rate at least
two  business  days  prior  to the  first  day of a  possible  interest  period
applicable thereto, such Loan or Loans shall bear interest based on the Federal
Funds Rate until such election is affirmatively made.

       4. ADVANCES, PAYMENTS,  PREPAYMENTS AND READVANCES. Upon each Borrower's
request,  and subject to the terms and conditions  contained  herein,  the Bank
shall  make  Loans to each  Borrower  on behalf of and for the  benefit  of its
respective  Fund(s) during the Facility  Period,  and each Borrower may borrow,
repay and reborrow funds hereunder. The Loans shall be

<PAGE>

evidenced by a duly executed and delivered  Master Grid  Promissory Note in the
form of EXHIBIT A. Each Loan shall be in an aggregate  amount not less than One
Hundred  Thousand  United States Dollars (U.S.  $100,000) and increments of One
Thousand  United States  Dollars (U.S.  $1,000) in excess  thereof.  Payment of
principal  and  interest  due with respect to each Loan shall be payable at the
maturity of such Loan and shall be made in funds  immediately  available to the
Bank prior to 2 p.m. Dallas time on the day such payment is due, or as the Bank
shall  otherwise  direct  from  time to time  and,  subject  to the  terms  and
conditions  hereof,  may  be  repaid  with  the  proceeds  of a  new  borrowing
hereunder. Notwithstanding any provision of this Agreement to the contrary, all
Loans, accrued but unpaid interest and other amounts payable hereunder shall be
due and payable upon  termination of the Facility  (whether by  acceleration or
otherwise).  If any Loan bearing interest based on the London Interbank Offered
Rate is repaid or  prepaid  other  than on the last day of an  interest  period
applicable thereto, the Fund which is the beneficiary of such Loan shall pay to
the Bank promptly upon demand such amount as the Bank  determines in good faith
is necessary to compensate the Bank for any reasonable cost or expense incurred
by the Bank as a result of such repayment or prepayment in connection  with the
reemployment  of funds in an  amount  equal to such  repayment  or  prepayment.
Whenever  the Bank seeks to assess for any such cost or expense it will provide
a certificate as the Borrower(s) shall reasonably request.

       5. FACILITY  FEE.  Beginning  with the date of this  Agreement and until
such time as all Loans have been  irrevocably  repaid to the Bank in full,  and
the Bank is no longer obligated to make Loans, the Funds (to be allocated among
the Funds as the Borrowers deem  appropriate)  shall pay to the Bank a facility
fee (the  "Facility  Fee") in the amount of .07 of one percent (7 basis points)
of the amount of the  Commitment,  as it may be reduced  pursuant to section 6.
The Facility  Fee shall be payable  quarterly  in arrears  beginning  March 31,
1999,  and  upon  termination  of the  Facility  (whether  by  acceleration  or
otherwise).

       6. OPTIONAL TERMINATION OR REDUCTION OF COMMITMENT.  The Borrowers shall
have the right upon at least three (3) business  days prior  written  notice to
the Bank, to terminate or reduce the unused portion of the Commitment. Any such
reduction  of the  Commitment  shall be in the  amount of Five  Million  United
States Dollars (U.S. $5,000,000) or any larger integral multiple of One Million
United States  Dollars (U.S.  $1,000,000)  (except that any reduction may be in
the aggregate  amount of the unused  Commitment).  Accrued fees with respect to
the terminated Commitment shall be payable to the Bank on the effective date of
such termination.

       7.   MANDATORY   TERMINATION  OF   COMMITMENT.   The  Commitment   shall
automatically  terminate on the last day of the  Facility  Period and any Loans
then outstanding  (together with accrued interest thereon and any other amounts
owing hereunder) shall be due and payable on such date.

       8.  COMMITTED  FACILITY.  The Bank  acknowledges  that the Facility is a
committed  facility  and  that the Bank  shall  be  obligated  to make any Loan
requested during the Facility Period under this Agreement, subject to the terms
and conditions hereof; provided,  however, that the Bank shall not be obligated
to make any Loan if this Facility has been  terminated by the Borrowers,  or if
at the time of a request for a Loan by a Borrower (on behalf of the  applicable
Fund(s)) there exists any Event of Default or condition which, with the passage
of time or giving of notice, or both, would

<PAGE>

constitute or become an Event of Default with respect to such Borrower (or such
applicable Fund(s)).

       9. LOAN  REQUESTS.  Each request for a Loan (each a "Borrowing  Notice")
shall be in writing by the applicable Borrower(s), except that such Borrower(s)
may make an oral  request  (each an "Oral  Request")  provided  that  each Oral
Request  shall be followed by a written  Borrowing  Notice  within one business
day. Each Borrowing  Notice shall specify the following  terms ("Terms") of the
requested  Loan:  (i) the date on which such Loan is to be disbursed,  (ii) the
principal amount of such Loan,  (iii) the Borrower(s)  which are borrowing such
Loan and the  amount of such Loan to be  borrowed  by each  Borrower,  (iv) the
Funds for whose  benefit the Loan is being  borrowed and the amount of the Loan
which is for the benefit of each such Fund,  (v)  whether  such Loan shall bear
interest at the Federal Funds Rate or the London  Interbank  Offered Rate,  and
(vi) the requested  maturity date of the Loan. Each Borrowing Notice shall also
set forth the total assets of each Fund for whose benefit a portion of the Loan
is being borrowed as of the close of business on the day immediately  preceding
the date of such Borrowing Notice.  Borrowing Notices shall be delivered to the
Bank by 1:00 p.m.  Dallas time on the day the Loan is  requested  to be made if
such Loan is to bear interest  based on the Federal Funds Rate or by 10:00 a.m.
Dallas time on the second  business day before the Loan is requested to be made
if such Loan is to bear interest based on the London Interbank Offered Rate.

Each  Borrowing  Notice shall  constitute a  representation  to the Bank by the
applicable  Borrower(s)  that  all of the  representations  and  warranties  in
Section  12 hereof  are true and  correct  as of such date and that no Event of
Default or other  condition which with the passage of time or giving of notice,
or both, would result in an Event of Default, has occurred or is occurring.

       10.  CONFIRMATIONS;  CREDITING  OF FUNDS;  RELIANCE  BY THE  BANK.  Upon
receipt by the Bank of a Borrowing Notice:

                (a) The  Bank  shall  send  each  applicable  Borrower  written
       confirmation  of the Terms of such Loan via  facsimile or  telecopy,  as
       soon as reasonably practicable;  provided,  however, that the failure to
       do so shall not affect the obligation of any such Borrower;

                (b) The Bank shall make such Loan in accordance  with the Terms
       by transfer of the Loan amount in immediately  available  funds,  to the
       account of the applicable  Borrower(s) as specified in EXHIBIT B to this
       Agreement or as such Borrower(s)  shall otherwise specify to the Bank in
       a writing signed by an Authorized  Individual (as defined in Section 11)
       of such Borrower(s) and sent to the Bank via facsimile or telecopy; and

                (c) The Bank shall make appropriate  entries on the Note or the
       records of the Bank to reflect the Terms of the Loan; provided, however,
       that the  failure  to do so  shall  not  affect  the  obligation  of any
       Borrower.

The Bank shall be entitled to rely upon and act hereunder  pursuant to any Oral
Request  which it  reasonably  believes  to have  been  made by the  applicable
Borrower through an Authorized  Individual.  If any Borrower  believes that the
confirmation relating to any Loan contains any error

<PAGE>

or discrepancy  from the applicable  Oral Request,  such Borrower will promptly
notify the Bank thereof.

       11.  BORROWING  RESOLUTIONS  AND OFFICERS'  CERTIFICATES;  SUBORDINATION
AGREEMENT.  Prior to the making of any Loan  pursuant  to this  Agreement,  the
Borrowers  shall have  delivered to the Bank (a) the duly  executed  Note,  (b)
resolutions of each Borrower's Trustees or Board of Directors  authorizing such
Borrower to execute,  deliver and perform this Agreement and the Note on behalf
of the applicable Funds, (c) an Officer's Certificate in substantially the form
set  forth in  EXHIBIT D to this  Agreement,  authorizing  certain  individuals
("Authorized  Individuals"),  to take on behalf of each  Borrower (on behalf of
the applicable Funds) actions  contemplated by this Agreement and the Note, (d)
a subordination  agreement in substantially  the form set forth in EXHIBIT E to
this Agreement,  and (e) the opinion of counsel to USAA  Investment  Management
Company, manager and advisor to the Borrowers,  with respect to such matters as
the Bank may reasonably request.

       12. REPRESENTATIONS AND WARRANTIES. In order to induce the Bank to enter
into this Agreement and to make the Loans provided for hereunder, each Borrower
hereby  makes with  respect to itself,  and as may be  relevant,  the series of
Funds  comprising such Borrower the following  representations  and warranties,
which shall survive the execution and delivery hereof and of the Note:

                (a) ORGANIZATION;  STANDING, ETC. The Borrower is a corporation
       or trust duly organized,  validly  existing,  and in good standing under
       applicable state laws and has all requisite corporate or trust power and
       authority to carry on its  respective  businesses  as now  conducted and
       proposed to be  conducted,  to enter into this  Agreement  and all other
       documents  to be  executed  by it in  connection  with the  transactions
       contemplated hereby, to issue and borrow under the Note and to carry out
       the terms hereof and thereof;

                (b) FINANCIAL  INFORMATION;  DISCLOSURE,  ETC. The Borrower has
       furnished  the Bank with certain  financial  statements of such Borrower
       with  respect  to itself  and the  applicable  Funds,  all of which such
       financial  statements  have been prepared in accordance  with  generally
       accepted accounting  principles applied on a consistent basis and fairly
       present  the  financial  position  and  results  of  operations  of such
       Borrower  and the  applicable  Funds on the  dates  and for the  periods
       indicated. Neither this Agreement nor any financial statements,  reports
       or  other  documents  or  certificates  furnished  to the  Bank  by such
       Borrower or the  applicable  Funds in connection  with the  transactions
       contemplated  hereby contain any untrue  statement of a material fact or
       omit to  state  any  material  fact  necessary  to make  the  statements
       contained herein or therein in light of the circumstances  when made not
       misleading;

                (c)  AUTHORIZATION;  COMPLIANCE  WITH  OTHER  INSTRUMENTS.  The
       execution,  delivery and performance of this Agreement and the Note, and
       borrowings  hereunder,  have  been  duly  authorized  by  all  necessary
       corporate  or trust  action of the  Borrower  and will not result in any
       violation of or be in conflict  with or  constitute a default  under any
       term of the charter,  by-laws or trust agreement of such Borrower or the
       applicable  Funds,  or of any  borrowing  restrictions  or prospectus or
       statement of additional information of such Borrower

<PAGE>

       or the  applicable  Funds,  or of any agreement,  instrument,  judgment,
       decree, order,  statute,  rule or governmental  regulation applicable to
       such Borrower,  or result in the creation of any mortgage,  lien, charge
       or encumbrance  upon any of the properties or assets of such Borrower or
       the  applicable  Funds  pursuant to any such term.  The Borrower and the
       applicable  Funds are not in violation  of any term of their  respective
       charter,   by-laws  or  trust  agreement,  and  such  Borrower  and  the
       applicable  Funds  are  not in  violation  of any  material  term of any
       agreement  or  instrument  to which they are a party,  or to the best of
       such Borrower's knowledge, of any judgment, decree, order, statute, rule
       or governmental regulation applicable to them;

                (d) SEC COMPLIANCE.  The Borrower and the applicable  Funds are
       in  compliance  in all  material  respects  with all  federal  and state
       securities  or similar  laws and  regulations,  including  all  material
       rules,  regulations  and  administrative  orders of the  Securities  and
       Exchange Commission (the "SEC") and applicable Blue Sky authorities. The
       Borrower  and the  applicable  Funds are in  compliance  in all material
       respects  with all of the  provisions of the  Investment  Company Act of
       1940,  and such  Borrower  has filed all  reports  with the SEC that are
       required of it or the applicable Funds;

                (e) LITIGATION.  There is no action, suit or proceeding pending
       or, to the best of the  Borrower's  knowledge,  threatened  against such
       Borrower or the  applicable  Funds in any court or before any arbitrator
       or  governmental  body which seeks to restrain  any of the  transactions
       contemplated by this Agreement or which, if adversely determined,  could
       have a material  adverse effect on the assets or business  operations of
       such  Borrower or the  applicable  Funds or the ability of such Borrower
       and the applicable Funds to pay and perform their obligations  hereunder
       and under the Notes;

                (f) BORROWERS'  RELATIONSHIP TO FUNDS.  The assets of each Fund
       for whose  benefit  Loans are  borrowed by the  applicable  Borrower are
       subject to and liable for such Loans and are available to the applicable
       Borrower for the repayment of such Loans; and

                (g) YEAR 2000  PREPAREDNESS.  The Borrower has (i)  initiated a
       review and  assessment  of all areas within its business and  operations
       (including  those  affected by suppliers,  vendors and  customers)  that
       could be  adversely  affected by the "Year 2000  Problem"  (that is, the
       risk that computer  applications  used by such Borrower may be unable to
       recognize  and  perform  properly  date-sensitive   functions  involving
       certain  dates  prior to and any date after  December  31,  1999),  (ii)
       developed a plan and timeline for  addressing the Year 2000 Problem on a
       timely  basis,  and (iii) to date,  implemented  that plan in accordance
       with that timetable.  Based on the foregoing,  such Borrower  reasonably
       believes  that  all  computer  applications  that  are  material  to its
       business and operations are reasonably  expected on a timely basis to be
       able to perform properly  date-sensitive  functions for all dates before
       and after January 1, 2000 (that is, be "Year 2000 compliant"), except to
       the extent that a failure to do so could not  reasonably  be expected to
       have a material  adverse effect on the assets or business  operations of
       such  Borrower or the  applicable  Funds or the ability of such Borrower
       and the applicable Funds to pay and perform their obligations  hereunder
       and under the Note.

<PAGE>

       13.  AFFIRMATIVE  COVENANTS  OF THE  BORROWERS.  Until  such time as all
amounts of principal and interest due to the Bank by a Borrower pursuant to any
Loan made to such Borrower is  irrevocably  paid in full, and until the Bank is
no longer  obligated to make Loans to such Borrower,  such Borrower (for itself
and on behalf of its respective Funds) agrees:

                (a) To deliver to the Bank as soon as possible and in any event
       within  ninety  (90)  days  after  the end of each  fiscal  year of such
       Borrower and the applicable Funds, Statements of Assets and Liabilities,
       Statements of Operations and Statements of Changes in Net Assets of each
       applicable  Fund for such fiscal year,  as set forth in each  applicable
       Fund's Annual Report to shareholders  together with a calculation of the
       maximum  amount  which  each  applicable  Fund  could  borrow  under its
       Borrowing Limit as of the end of such fiscal year;

                (b) To  deliver  to the  Bank as soon as  available  and in any
       event  within  seventy-five  (75) days after the end of each  semiannual
       period of such Borrower and the applicable  Funds,  Statements of Assets
       and  Liabilities,  Statements of Operations and Statements of Changes in
       Net  Assets  of each  applicable  Fund as of the end of such  semiannual
       period,  as set forth in each  applicable  Fund's  Semiannual  Report to
       shareholders,  together with a calculation  of the maximum  amount which
       each  applicable  Fund could borrow under its Borrowing Limit at the end
       of such semiannual period;

                (c) To deliver to the Bank prompt  notice of the  occurrence of
       any event or condition which  constitutes,  or is likely to result in, a
       change in such Borrower or any applicable Fund which could reasonably be
       expected to materially  adversely  affect the ability of any  applicable
       Fund to  promptly  repay  outstanding  Loans made for its benefit or the
       ability of such Borrower to perform its obligations under this Agreement
       or the Note;

                (d) To do,  or  cause  to be  done,  all  things  necessary  to
       preserve  and keep in full  force  and  effect  the  corporate  or trust
       existence  of such  Borrower  and all  permits,  rights  and  privileges
       necessary  for  the  conduct  of its  businesses  and to  comply  in all
       material  respects with all  applicable  laws,  regulations  and orders,
       including without limitation,  all rules and regulations  promulgated by
       the SEC;

                (e) To promptly notify the Bank of any  litigation,  threatened
       legal  proceeding or  investigation  by a governmental  authority  which
       could  materially  affect the ability of such Borrower or the applicable
       Funds to promptly repay the outstanding Loans or otherwise perform their
       obligations hereunder;

                (f) In the event a Loan for the benefit of a particular Fund is
       not  repaid in full  within 10 days after the date it is  borrowed,  and
       until such Loan is repaid in full,  to  deliver to the Bank,  within two
       business  days  after  each  Friday  occurring  after  such 10th day,  a
       statement setting forth the total assets of such Fund as of the close of
       business on each such Friday; and

                (g) Upon the request of the Bank, which may be made by the Bank
       from  time to time in the  event the Bank in good  faith  believes  that
       there has been a material adverse

<PAGE>

       change in the capital markets generally,  to deliver to the Bank, within
       two business  days after such  request,  a statement  setting  forth the
       total assets of each Fund for whose benefit a Loan is outstanding on the
       date of such request.

       14. NEGATIVE COVENANTS OF THE BORROWERS.  Until such time as all amounts
of principal  and  interest due to the Bank by a Borrower  pursuant to any Loan
made to such  Borrower is  irrevocably  paid in full,  and until the Bank is no
longer obligated to make Loans to such Borrower,  such Borrower (for itself and
on behalf of its respective Funds) agrees:

                (a) Not to incur any  indebtedness  for  borrowed  money (other
       than  pursuant to a Five  Hundred  Million  United  States  Dollar (U.S.
       $500,000,000)  uncommitted  master  revolving  credit facility and a Two
       Hundred Fifty Million United States Dollar (U.S. $250,000,000) Committed
       Master  Revolving  Credit  Facility with USAA Capital  Corporation  (the
       "Other  Facilities")  and  overdrafts  incurred at the  custodian of the
       Funds from time to time in the ordinary  course of business)  except the
       Loans, without the prior written consent of the Bank, which consent will
       not be unreasonably withheld; and

                (b) Not to dissolve or  terminate  its  existence,  or merge or
       consolidate   with  any  other   person  or  entity,   or  sell  all  or
       substantially  all of its  assets in a single  transaction  or series of
       related  transactions  (other than assets  consisting of margin  stock),
       each without the prior written  consent of the Bank,  which consent will
       not be unreasonably withheld;  provided that a Borrower may without such
       consent merge,  consolidate  with, or purchase  substantially all of the
       assets of, or sell  substantially  all of its  assets to, an  affiliated
       investment  company or series thereof,  as provided for in Rule 17a-8 of
       the Investment Company Act of 1940.

       15. EVENTS OF DEFAULT. If any of the following events (each an "Event of
Default")  shall  occur  (it being  understood  that an Event of  Default  with
respect to one Fund or Borrower  shall not  constitute an Event of Default with
respect to any other Fund or Borrower):

                (a) Any  Borrower  or Fund  shall  default  in the  payment  of
       principal or interest on any Loan or any other fee due  hereunder  for a
       period of five (5) days after the same becomes due and payable,  whether
       at maturity or with  respect to the Facility Fee at a date fixed for the
       payment thereof;

                (b) Any Borrower or Fund shall default in the performance of or
       compliance with any term contained in Section 13 hereof and such default
       shall not have been  remedied  within  thirty  (30) days  after  written
       notice thereof shall have been given such Borrower or Fund by the Bank;

                (c) Any Borrower or Fund shall default in the performance of or
       compliance with any term contained in Section 14 hereof;

                (d) Any Borrower or Fund shall  default in the  performance  or
       compliance  with any other term contained  herein and such default shall
       not have been  remedied  within  thirty (30) days after  written  notice
       thereof shall have been given such Borrower or Fund by the Bank;

<PAGE>

                (e) Any  representation  or warranty made by a Borrower or Fund
       herein or pursuant hereto shall prove to have been false or incorrect in
       any material respect when made;

                (f) USAA Investment Management Company or any successor manager
       or investment  adviser,  provided that such  successor is a wholly-owned
       subsidiary  of USAA Capital  Corporation,  shall cease to be the Manager
       and investment advisor of each Fund; or

                (g) An event of default shall occur and be continuing under the
       Other Facilities; then, in any event, and at any time thereafter, if any
       Event of Default shall be continuing,  the Bank may by written notice to
       the applicable Borrower or Fund (i) terminate its commitment to make any
       Loan  hereunder,  whereupon said commitment  shall  forthwith  terminate
       without any other  notice of any kind with  respect to such  Borrower or
       Fund and (ii)  declare  the  principal  and  interest  in respect of any
       outstanding  Loans with respect to such Borrower or Fund,  and all other
       amounts due  hereunder  with  respect to such  Borrower  or Fund,  to be
       immediately  due and payable  whereupon  the  principal  and interest in
       respect  thereof  and all  other  amounts  due  hereunder  shall  become
       forthwith due and payable without presentment,  demand, protest or other
       notice of any kind, all of which are expressly waived by the Borrowers.

       16.  NEW  BORROWERS;  NEW  FUNDS.  So long as no  Event  of  Default  or
condition  which,  with the  passage of time or the giving of notice,  or both,
would  constitute or become an Event of Default has occurred and is continuing,
and with the prior consent of the Bank,  which consent will not be unreasonably
withheld:

                (a) Any investment company that becomes part of the same "group
       of  investment  companies"  (as that term is defined in Rule 11a-3 under
       the  Investment  Company Act of 1940) as the original  Borrowers to this
       Agreement,  may, by  submitting  an amended  Schedule A and Exhibit B to
       this Agreement to the Bank (which amended Schedule A and Exhibit B shall
       replace  the  Schedule  A and  Exhibit  B which  are then a part of this
       Agreement) and such other documents as the Bank may reasonably  request,
       become a party to this Agreement and may become a "Borrower"  hereunder;
       and

                (b) A Borrower  may, by  submitting  an amended  Schedule A and
       Exhibit B to this  Agreement to the Bank (which  amended  Schedule A and
       Exhibit B shall  replace  the  Schedule A and Exhibit B which are then a
       part of this  Agreement),  add  additional  Funds for whose benefit such
       Borrower  may borrow  Loans.  No such  amendment  of  Schedule A to this
       Agreement shall amend the Borrowing Limit applicable to any Fund without
       the prior consent of the Bank.

       17. LIMITED RECOURSE. The Bank agrees (i) that any claim,  liability, or
obligation  arising  hereunder  or under the Note  whether  on  account  of the
principal of any Loan,  interest thereon,  or any other amount due hereunder or
thereunder  shall be satisfied  only from the assets of the  specific  Fund for
whose  benefit a Loan is  borrowed  and in any event in an amount not to exceed
the outstanding  principal amount of any Loan borrowed for such Fund's benefit,
together  with  accrued and unpaid  interest  due and owing  thereon,  and such
Fund's  share  of any  other  amount  due  hereunder  and  under  the  Note (as
determined in accordance with the provisions hereof) and (ii) that

<PAGE>

no  assets  of any Fund  shall be used to  satisfy  any  claim,  liability,  or
obligation  arising hereunder or under the Note with respect to the outstanding
principal  amount of any Loan borrowed for the benefit of any other Fund or any
accrued and unpaid interest due and owing thereon or such other Fund's share of
any other amount due hereunder and under the Note (as  determined in accordance
with the provisions hereof).

       18. REMEDIES ON DEFAULT. In case any one or more Events of Default shall
occur and be continuing, the Bank may proceed to protect and enforce its rights
by an action at law, suit in equity or other appropriate  proceedings,  against
the applicable Borrower(s) and/or Fund(s), as the case may be. In the case of a
default  in the  payment of any  principal  or  interest  on any Loan or in the
payment of any fee due hereunder,  the relevant  Fund(s) (to be allocated among
such  Funds as the  Borrowers  deem  appropriate)  shall  pay to the Bank  such
further  amount  as  shall be  sufficient  to cover  the  cost and  expense  of
collection,  including,  without  limitation,  reasonable  attorney's  fees and
expenses.

       19.  NO WAIVER OF  REMEDIES. No course of dealing or failure or delay on
the part of the Bank in exercising  any right or remedy  hereunder or under the
Note shall  constitute  a waiver of any right or remedy  hereunder or under the
Note, nor shall any partial  exercise of any right or remedy hereunder or under
the Note  preclude  any further  exercise  thereof or the exercise of any other
right or remedy hereunder or under the Note. Such rights and remedies expressly
provided are  cumulative  and not exclusive of any rights or remedies which the
Bank would otherwise have.

       20.  EXPENSES.  The  Fund(s)  (to be  allocated  among  the Funds as the
Borrowers deem  appropriate)  shall pay on demand all reasonable  out-of-pocket
costs and expenses (including reasonable attorney's fees and expenses) incurred
by the  Bank in  connection  with  the  collection  and any  other  enforcement
proceedings of or regarding this Agreement, any Loan or the Note.

       21.  BENEFIT OF AGREEMENT.  This Agreement and the Note shall be binding
upon  and  inure  for  the  benefit  of and be  enforceable  by the  respective
successors  and assigns of the parties  hereto;  provided that no party to this
Agreement  or the Note may  assign any of its rights  hereunder  or  thereunder
without the prior written  consent of the other parties.  The Bank may not sell
participations  and  subparticipations  in all or any  part of the  Loans  made
hereunder  without the prior consent of the Borrowers,  which consent shall not
be unreasonably withheld.

       22.  NOTICES.  All notices  hereunder  and all  written,  facsimiled  or
telecopied  confirmations  of Oral Requests made hereunder shall be sent to the
Borrowers  as indicated on EXHIBIT B and to the Bank as indicated on EXHIBIT C.
Written  communications  shall be deemed  to have  been duly  given and made as
follows: If sent by mail, seventy-two (72) hours after deposit in the mail with
first-class postage prepaid, addressed as provided in EXHIBIT B (the Borrowers)
and EXHIBIT C (the Bank);  and in the case of facsimile  or telecopy,  when the
facsimile or telecopy is received if on a business day or otherwise on the next
business day.

       23.  MODIFICATIONS.  No provision  of this  Agreement or the Note may be
waived,  modified  or  discharged  except by mutual  written  agreement  of all
parties. THIS WRITTEN LOAN AGREEMENT AND THE NOTE REPRESENT THE FINAL AGREEMENT
BETWEEN THE

<PAGE>

PARTIES AND MAY NOT BE  CONTRADICTED BY EVIDENCE OF PRIOR,  CONTEMPORANEOUS  OR
SUBSEQUENT  ORAL AGREEMENTS OF THE PARTIES.  THERE ARE NO UNWRITTEN  AGREEMENTS
BETWEEN THE PARTIES.

       24.  INCREASED  COST AND REDUCED  RETURN.  If at any time after the date
hereof,  the Bank (which  shall  include,  for  purposes of this  Section,  any
corporation  controlling the Bank) determines that the adoption or modification
of any applicable law regarding the Bank's required  levels of reserves,  other
than the reserve  requirement  taken into  account  when  computing  the London
Interbank  Offered  Rate as  provided in Section 3, or capital  (including  any
allocation of capital requirements or conditions), or similar requirements,  or
any  interpretation  or  administration  thereof  by  a  governmental  body  or
compliance  by the Bank with any of such  requirements,  has or would  have the
effect of (a)  increasing  the  Bank's  costs  relating  to the  Loans,  or (b)
reducing the yield or rate of return of the Bank on the Loans, to a level below
that which the Bank could have achieved but for the adoption or modification of
any such  requirements,  the  Funds  (to be  allocated  among  the Funds as the
Borrowers deem appropriate)  shall,  within fifteen (15) days of any request by
the Bank,  pay to the Bank  such  additional  amounts  as (in the  Bank's  sole
judgment, after good faith and reasonable computation) will compensate the Bank
for such increase in costs or reduction in yield or rate of return of the Bank.
Whenever  the  Bank  shall  seek  compensation  for any  increase  in  costs or
reduction in yield or rate of return,  the Bank shall provide a certificate  as
the Borrower(s) shall reasonably request. Failure by the Bank to demand payment
within 90 days of any additional  amounts payable  hereunder shall constitute a
waiver of the Bank's right to demand  payment of such amounts at any subsequent
time.  Nothing herein  contained shall be construed or so operate as to require
the Borrowers or the Funds to pay any interest,  fees, costs or charges greater
than is permitted by applicable law.

       25.  GOVERNING LAW AND JURISDICTION. This Agreement shall be governed by
and construed in accordance  with the laws of the state of Texas without regard
to the choice of law provisions thereof.

       26.  TRUST  DISCLAIMER. Neither the  shareholders,  trustees,  officers,
employees and other agents of any Borrower or Fund shall be personally bound by
or liable for any indebtedness,  liability or obligation hereunder or under the
Note nor shall resort be had to their private  property for the satisfaction of
any  obligation  or claim  hereunder.  

If this letter  correctly  reflects your agreement with us, please execute both
copies hereof and return one to us,  whereupon this Agreement  shall be binding
upon the Borrowers, the Funds and the Bank.

Sincerely,

NATIONSBANK, N.A.


By:    /S/ JOAN D'AMICO
       ------------------------
       Joan D'Amico
       Vice President 

<PAGE>

AGREED AND ACCEPTED:


USAA MUTUAL FUND, INC.,
on behalf of and for the benefit
of its series of Funds as set forth
on Schedule A to this Agreement


By:    /S/ MICHAEL J.C. ROTH
       ------------------------
       Michael J.C. Roth
       President


USAA INVESTMENT  TRUST, 
on behalf of and for the benefit
of its series of Funds as set forth
 on Schedule A to this Agreement


By:    /S/ MICHAEL J.C. ROTH
       ------------------------
       Michael J.C. Roth
       President


USAA TAX EXEMPT FUND,  INC.,
on behalf of and for the benefit
of its series of Funds as set forth
on Schedule A to this Agreement


By:    /S/ MICHAEL J.C. ROTH
       ------------------------
       Michael J.C. Roth
       President


USAA STATE  TAX-FREE  TRUST,
on behalf of and for the benefit
of its series of Funds as set forth
on Schedule A to this Agreement


By:    /S/ MICHAEL J.C. ROTH
       ------------------------
       Michael J.C. Roth
       President

<PAGE>

                                                                     SCHEDULE A

                       FUNDS FOR WHOSE BENEFIT LOANS CAN
                      BE BORROWED UNDER FACILITY AGREEMENT
                              AND BORROWING LIMIT

                                                         Maximum Percent of the
                                                         Total Assets Which Can
                                                     Be Borrowed Under Facility
      BORROWER                     FUNDS         AGREEMENT AND OTHER FACILITIES
      --------                     -----         ------------------------------

USAA MUTUAL FUND, INC.      USAA Aggressive Growth                25%
                            USAA Growth & Income                  25
                            USAA Income Stock                     25
                            USAA Short-Term Bond                  25
                            USAA Money Market                     25
                            USAA Growth                           25
                            USAA Income                           25
                            USAA S&P 500 Index                    25
                            USAA Science & Technology             25
                            USAA First Start Growth               25

USAA INVESTMENT TRUST       USAA Cornerstone Strategy             25
                            USAA Gold                             25
                            USAA International                    25
                            USAA World Growth                     25
                            USAA GNMA Trust                       25
                            USAA Treasury Money Market Trust      25
                            USAA Emerging Markets                 25
                            USAA Growth and Tax Strategy          25
                            USAA Growth Strategy                  25
                            USAA Income Strategy                  25
                            USAA Balanced Strategy                25

USAA TAX EXEMPT FUND, INC.  USAA Long-Term                        15
                            USAA Intermediate-Term                15
                            USAA Short-Term                       15
                            USAA Tax Exempt Money Market          15
                            USAA California Bond                  15
                            USAA California Money Market          15
                            USAA New York Bond                    15
                            USAA New York Money Market            15
                            USAA Virginia Bond                    15
                            USAA Virginia Money Market            15

USAA STATE TAX-FREE TRUST   USAA Florida Tax-Free Income          15
                            USAA Florida Tax-Free Money Market    15
                            USAA Texas Tax-Free Income            15
                            USAA Texas Tax-Free Money Market      15
<PAGE>

                                                                      EXHIBIT A
                                                                      ---------

                          MASTER GRID PROMISSORY NOTE

U.S. $100,000,000                                      Dated:  January 13, 1999

       FOR VALUE  RECEIVED,  each of the  undersigned  (each a  "Borrower"  and
collectively the "Borrowers"),  severally and not jointly, on behalf of and for
the benefit of the series of funds  comprising  each such Borrower as listed on
Schedule A to the  Agreement as defined  below (each a "Fund" and  collectively
the "Funds") promises to pay to the order of NATIONSBANK,  N.A. (the "Bank") at
the Bank's office  located at 901 Main Street,  Dallas,  Dallas  County,  Texas
75202,  in  lawful  money of the  United  States  of  America,  in  immediately
available  funds,  the  principal  amount of all Loans made by the Bank to such
Borrower for the benefit of the applicable  Funds under the Facility  Agreement
Letter dated January 13, 1999 (as amended or modified, the "Agreement"),  among
the Borrowers and the Bank, together with interest thereon at the rate or rates
set forth in the Agreement.  All payments of interest and principal outstanding
shall be made in accordance with the terms of the Agreement.

       This Note  evidences  Loans made  pursuant  to, and is  entitled  to the
benefits  of,  the  Agreement.  Terms not  defined in this Note shall be as set
forth in the Agreement.

       The Bank is authorized to endorse the particulars of each Loan evidenced
hereby  on  the  attached  Schedule  and  to  attach  additional  Schedules  as
necessary,  provided  that  the  failure  of  the  Bank  to  do  so or to do so
accurately  shall not affect the  obligations  of any Borrower (or the Fund for
whose benefit it is borrowing) hereunder.

       Each Borrower waives all claims to  presentment,  demand,  protest,  and
notice  of  dishonor.  Each  Borrower  agrees  to pay all  reasonable  costs of
collection,  including  reasonable  attorney's  fees  in  connection  with  the
enforcement of this Note.

       The Bank  hereby  agrees (i) that any claim,  liability,  or  obligation
arising hereunder or under the Agreement whether on account of the principal of
any Loan,  interest  thereon,  or any other amount due  hereunder or thereunder
shall be satisfied  only from the assets of the specific Fund for whose benefit
a Loan is borrowed and in any event in an amount not to exceed the  outstanding
principal  amount of any Loan borrowed for such Fund's  benefit,  together with
accrued and unpaid interest due and owing thereon, and such Fund's share of any
other amount due hereunder and under the Agreement (as determined in accordance
with the provisions of the Agreement) and (ii) that no assets of any Fund shall
be used to satisfy any claim,  liability,  or obligation  arising  hereunder or
under the Agreement  with respect to the  outstanding  principal  amount of any
Loan  borrowed  for the  benefit  of any other Fund or any  accrued  and unpaid
interest  due and owing  thereon or such other Fund's share of any other amount
due hereunder and under the  Agreement  (as  determined in accordance  with the
provisions of the Agreement).

       Neither the shareholders, trustees, officers, employees and other agents
of any  Borrower  or Fund  shall  be  personally  bound  by or  liable  for any
indebtedness, liability or obligation hereunder

<PAGE>

or under the Note nor shall  resort be had to their  private  property  for the
satisfaction of any obligation or claim hereunder.

       This Note shall be governed by the laws of the state of Texas.

                                             USAA MUTUAL FUND,  INC.,
                                             on behalf  of and for the  benefit
                                             of  its  series  of  Funds  as set
                                             forth   on   Schedule   A  to  the
                                             Agreement


                                             By: /S/ MICHAEL J.C. ROTH
                                                 ----------------------
                                                 Michael J.C. Roth
                                                 President


                                             USAA INVESTMENT TRUST,
                                             on behalf  of and for the  benefit
                                             of  its  series  of  Funds  as set
                                             forth   on   Schedule   A  to  the
                                             Agreement


                                             By: /S/ MICHAEL J.C. ROTH
                                                 ----------------------
                                                 Michael J.C. Roth
                                                 President


                                             USAA TAX EXEMPT FUND, INC.,
                                             on behalf  of and for the  benefit
                                             of  its  series  of  Funds  as set
                                             forth   on   Schedule   A  to  the
                                             Agreement


                                             By: /S/ MICHAEL J.C. ROTH
                                                 ----------------------
                                                 Michael J.C. Roth
                                                 President


                                             USAA STATE TAX-FREE TRUST,
                                             on behalf  of and for the  benefit
                                             of  its  series  of  Funds  as set
                                             forth   on   Schedule   A  to  the
                                             Agreement


                                             By: /S/ MICHAEL J.C. ROTH
                                                 ----------------------
                                                 Michael J.C. Roth
                                                 President

<PAGE>

                         LOANS AND PAYMENT OF PRINCIPAL

This  schedule  (grid) is  attached to and made a part of the  Promissory  Note
dated January 13, 1999,  executed by USAA MUTUAL FUND,  INC.,  USAA  INVESTMENT
TRUST,  USAA TAX EXEMPT FUND,  INC. AND USAA STATE  TAX-FREE TRUST on behalf of
and for the  benefit  of the  series of funds  comprising  each  such  Borrower
payable to the order of NATIONSBANK, N.A.

[GRID]
Date of Loan

Borrower
and Fund

Amount of 
Loan

Type of Rate and
Interest Rate on Date 
of Borrowing

Amount of 
Principal Repaid

Date of 
Repayment

Other 
Expenses

Notation made 
by

<PAGE>

                                                                      EXHIBIT B
                                                                      ---------

                               NATIONSBANK, N.A.
                                MASTER REVOLVING
                           CREDIT FACILITY AGREEMENT
                           BORROWER INFORMATION SHEET


BORROWER:      USAA MUTUAL FUND, INC., USAA INVESTMENT TRUST,
          USAA TAX EXEMPT FUND, INC. AND USAA STATE TAX-FREE TRUST

ADDRESS FOR NOTICES AND OTHER COMMUNICATIONS TO THE BORROWER:

                         9800 Fredericksburg Road
                         San Antonio, Texas  78288 (for Federal Express, 78240)
                         Attention:         John W. Saunders, Jr.
                                            Senior Vice President,
                                            Fixed Income Investments

                         Telephone:         (210) 498-7320
                         Telecopy:          (210) 498-5689

                                            David G. Peebles
                                            Senior Vice President,
                                            Equity Investments

                         Telephone:         (210) 498-7340
                         Telecopy:          (210) 498-2954

ADDRESS FOR BORROWING AND PAYMENTS:

                         9800 Fredericksburg Road
                         San Antonio, Texas  78288 (for Federal Express, 78240)
                         Attention:         Caryl J. Swann

                         Telephone:         (210) 498-7303
                         Telecopy:          (210) 498-0382 or 498-7819
                         Telex:             767424

INSTRUCTIONS FOR PAYMENTS TO BORROWER:

WE PAY VIA:  __X__FED FUNDS   _____CHIPS

<PAGE>

TO:  (PLEASE PLACE BANK NAME,  CORESPONDENT NAME (IF APPLICABLE),  CHIPS AND/OR
     FED FUNDS ACCOUNT NUMBER BELOW)

STATE STREET BANK AND TRUST COMPANY, BOSTON, MASSACHUSETTS
- ----------------------------------------------------------

ABA #011-00-0028
- ----------------

USAA MUTUAL FUND, INC.
======================

USAA AGGRESSIVE GROWTH FUND                          ACCT.# 6938-502-9
- ----------------------------------------------------------------------
USAA GROWTH & INCOME FUND                            ACCT.# 6938-519-3
- ----------------------------------------------------------------------
USAA INCOME STOCK FUND                               ACCT.# 6938-495-6
- ----------------------------------------------------------------------
USAA SHORT-TERM BOND FUND                            ACCT.# 6938-517-7
- ----------------------------------------------------------------------
USAA MONEY MARKET FUND                               ACCT.# 6938-498-0
- ----------------------------------------------------------------------
USAA GROWTH FUND                                     ACCT.# 6938-490-7
- ----------------------------------------------------------------------
USAA INCOME FUND                                     ACCT.# 6938-494-9
- ----------------------------------------------------------------------
USAA S&P 500 INDEX FUND                              ACCT.# 6938-478-2
- ----------------------------------------------------------------------
USAA SCIENCE & TECHNOLOGY FUND                       ACCT.# 6938-515-1
- ----------------------------------------------------------------------
USAA FIRST START GROWTH FUND                         ACCT.# 6938-468-3
- ----------------------------------------------------------------------

USAA INVESTMENT TRUST
=====================

USAA CORNERSTONE STRATEGY FUND                       ACCT.# 6938-487-3
- ----------------------------------------------------------------------
USAA GOLD FUND                                       ACCT.# 6938-488-1
- ----------------------------------------------------------------------
USAA INTERNATIONAL FUND                              ACCT.# 6938-497-2
- ----------------------------------------------------------------------
USAA WORLD GROWTH FUND                               ACCT.# 6938-504-5
- ----------------------------------------------------------------------
USAA GNMA TRUST                                      ACCT.# 6938-486-5
- ----------------------------------------------------------------------
USAA TREASURY MONEY MARKET TRUST                     ACCT.# 6938-493-1
- ----------------------------------------------------------------------

<PAGE>

USAA EMERGING MARKETS FUND                           ACCT.# 6938-501-1
- ----------------------------------------------------------------------
USAA GROWTH AND TAX STRATEGY FUND                    ACCT.# 6938-509-4
- ----------------------------------------------------------------------
USAA GROWTH STRATEGY FUND                            ACCT.# 6938-510-2
- ----------------------------------------------------------------------
USAA INCOME STRATEGY FUND                            ACCT.# 6938-508-6
- ----------------------------------------------------------------------
USAA BALANCED STRATEGY FUND                          ACCT.# 6938-507-8
- ----------------------------------------------------------------------

USAA TAX EXEMPT FUND, INC.
==========================

USAA LONG-TERM FUND                                  ACCT.# 6938-492-3
- ----------------------------------------------------------------------
USAA INTERMEDIATE-TERM FUND                          ACCT.# 6938-496-4
- ----------------------------------------------------------------------
USAA SHORT-TERM FUND                                 ACCT.# 6938-500-3
- ----------------------------------------------------------------------
USAA TAX EXEMPT MONEY MARKET FUND                    ACCT.# 6938-514-4
- ----------------------------------------------------------------------
USAA CALIFORNIA BOND FUND                            ACCT.# 6938-489-9
- ----------------------------------------------------------------------
USAA CALIFORNIA MONEY MARKET FUND                    ACCT.# 6938-491-5
- ----------------------------------------------------------------------
USAA NEW YORK BOND FUND                              ACCT.# 6938-503-7
- ----------------------------------------------------------------------
USAA NEW YORK MONEY MARKET FUND                      ACCT.# 6938-511-0
- ----------------------------------------------------------------------
USAA VIRGINIA BOND FUND                              ACCT.# 6938-512-8
- ----------------------------------------------------------------------
USAA VIRGINIA MONEY MARKET FUND                      ACCT.# 6938-513-6
- ----------------------------------------------------------------------

USAA STATE TAX-FREE TRUST
=========================

USAA FLORIDA TAX-FREE INCOME FUND                    ACCT.# 6938-473-3
- ----------------------------------------------------------------------
USAA FLORIDA TAX-FREE MONEY MARKET FUND              ACCT.# 6938-467-5
- ----------------------------------------------------------------------
USAA TEXAS TAX-FREE INCOME FUND                      ACCT.# 6938-602-7
- ----------------------------------------------------------------------
USAA TEXAS TAX-FREE MONEY MARKET FUND                ACCT.# 6938-601-9
- ----------------------------------------------------------------------

<PAGE>

                                                                      EXHIBIT C
                                                                      ---------

                              ADDRESS FOR THE BANK

                               NationsBank, N.A.
                               901 Main Street
                               66th Floor
                               Dallas, Texas 75202


                               Attention:          Joan D'Amico
                               Telephone No.:      (214) 508-3307
                               Telecopy No.:       (214) 508-0604

<PAGE>

                                                                      EXHIBIT D
                                                                      ---------

                             OFFICER'S CERTIFICATE
                             ---------------------


The undersigned  hereby certifies that he is the duly elected Secretary of USAA
Mutual Fund, Inc., USAA Investment  Trust,  USAA Tax Exempt Fund, Inc. and USAA
State Tax-Free  Trust and that he is authorized to execute this  Certificate on
behalf of USAA Mutual Fund, Inc., USAA Investment  Trust, USAA Tax Exempt Fund,
Inc. and USAA State Tax-Free Trust. The undersigned hereby further certifies to
the following:

The following  individuals  are duly authorized to act on behalf of USAA Mutual
Fund,  Inc., USAA Investment  Trust,  USAA Tax Exempt Fund, Inc. and USAA State
Tax-Free Trust, by transmitting telephonic, telex, or telecopy instructions and
other  communications  with regard to borrowings  and payments  pursuant to the
Master Revolving Credit Facility Agreement with NationsBank, N.A. The signature
set opposite the name of each  individual  below is that  individual's  genuine
signature.

         NAME                       OFFICE                     SIGNATURE
         ----                       ------                     ---------


Michael J.C. Roth          President                  /S/ MICHAEL J.C. ROTH
                                                      -------------------------

John W. Saunders, Jr.      Senior Vice President,
                           Fixed Income Investments   /S/ JOHN W. SAUNDERS, JR.
                                                      -------------------------

David G. Peebles           Senior Vice President,
                           Equity Investments         /S/ DAVID G. PEEBLES
                                                      -------------------------

Kenneth E. Willmann        Vice President,
                           Mutual Fund Portfolios     /S/ KENNETH E. WILLMANN
                                                      -------------------------

Sherron A. Kirk            Vice President,
                           Controller                 /S/ SHERRON A. KIRK
                                                      -------------------------

Caryl J. Swann             Executive Director,
                           Mutual Fund Analysis
                           and Support                /S/ CARYL J. SWANN
                                                      -------------------------

IN WITNESS  WHEREOF,  I have executed this  Certificate  as of this 12th day of
January, 1999.


                                                      /S/ MICHAEL D. WAGNER
                                                      -------------------------
                                                      Michael D. Wagner
                                                      Secretary

<PAGE>

I, Michael J. C. Roth,  President of USAA Mutual Fund,  Inc.,  USAA  Investment
Trust,  USAA Tax Exempt Fund, Inc. and USAA State Tax-Free Trust hereby certify
that  Michael D. Wagner is, and has been at all times since a date prior to the
date of this Certificate,  the duly elected, qualified, and acting Secretary of
USAA Mutual Fund, Inc., USAA Investment  Trust,  USAA Tax Exempt Fund, Inc. and
USAA State  Tax-Free  Trust and that the  signature set forth above is his true
and correct signature.


DATE:  January 13, 1999                            /S/ MICHAEL J.C. ROTH       
                                                   ----------------------------
                                                   Michael J.C. Roth
                                                   President

<PAGE>

                                       Subordination                  EXHIBIT E
NationsBank of Texas, N.A.             Agreement

This is an agreement among:                            Dated:  January 13, 1999

NAME AND ADDRESS OF LENDER (INCLUDING COUNTY):

NationsBank of Texas, N.A.
901 Main Street
Dallas, Dallas County, Texas  75202

  (LENDER)

NAME AND ADDRESS OF BORROWER:

USAA Mutual Fund, Inc.
USAA Investment Trust
USAA Tax Exempt Fund, Inc.
USAA State Tax-Free Trust
9800 Fredericksburg Road
San Antonio, Texas   78288

  (DEBTOR)

NAME AND ADDRESS OF CREDITOR:

USAA Capital Corporation
9800 Fredericksburg Road
San Antonio, Texas  78288

  (CREDITOR)

1.   BACKGROUND.  Debtor  is or may be  indebted  to  Lender  pursuant  to that
     certain  Facility  Agreement  Letter dated January 13, 1999 between Debtor
     and  Lender  ("Senior  Facility  Agreement").  Debtor  also  is or  may be
     indebted to Creditor pursuant to certain Facility  Agreement Letters dated
     January 12,  1999  between  Debtor and  Creditor  ("Subordinated  Facility
     Agreements").  All debt (as hereinafter defined) under the Senior Facility
     Agreement  is  hereinafter  referred to as "senior  debt" and all debt (as
     hereinafter  defined)  under  the  Subordinated   Facility  Agreements  is
     hereinafter referred to as "subordinated debt".

2.   DEFINITION OF DEBT. The term "debt" as used in the terms "senior debt" and
     "subordinated debt" means all debts,  obligations and liabilities,  now or
     hereafter existing, direct or indirect,  absolute or contingent,  joint or
     several,  secured or unsecured,  due or not due,  contractual or tortuous,
     liquidated  or  unliquidated,  arising by operation  of law or  otherwise,
     irrespective  of the person in whose favor such debt may  originally  have
     been created and  regardless  of the manner in which such debt has been or
     may  hereafter be acquired by Lender or Creditor,  as the case may be, and
     includes all costs  incurred to obtain,  preserve,  perfect or enforce any
     security  interest,  lien  or  mortgage,  or to  collect  any  debt  or to
     maintain,  preserve,  collect and enforce any collateral,  and interest on
     such amounts.

3.   SUBORDINATION  OF DEBT.  Until  senior debt has been paid in full,  Debtor
     will not pay and Creditor will not accept any payment on subordinated debt
     at any time that an Event of Default  (as  defined in the Senior  Facility
     Agreement)  has  occurred  and is  continuing  in respect of senior  debt.
     Anything of value received by Creditor on account of subordinated  debt in
     violation  of  this  agreement  will  be held by  Creditor  in  trust  and
     immediately  will be  turned  over to Lender  in the form  received  to be
     applied by Lender on senior debt.

4.   REMEDIES OF CREDITOR. Until all senior debt has been paid in full, without
     Lender's  permission,  Creditor  will  not be a  party  to any  action  or
     proceeding  against any person to recover  subordinated debt. Upon written
     request of Lender,  Creditor will file any claim or proof of claim or take
     any  other  action  to  collect   subordinated  debt  in  any  bankruptcy,
     receivership,  liquidation,  reorganization or other proceeding for relief
     of debtors or in connection with Debtor's insolvency, or in liquidation or
     marshaling  of  Debtor's  assets  or   liabilities,   or  in  any  probate
     proceeding,  and if any distribution  shall be made to Creditor,  Creditor
     will hold the same in trust for Lender and immediately  pay to Lender,  in
     the form received to be applied on senior debt,  all money or other assets
     received in any such  proceedings  on account of  subordinated  debt until
     senior debt shall have been paid in full.  If Creditor  shall fail to take
     any such  action  when  requested  by  Lender,  Lender  may  enforce  this
     agreement or as attorney in fact for Creditor and Debtor may take any such
     action on Creditor's behalf.  Creditor hereby irrevocably  appoints Lender
     Creditor's  attorney in fact to take any such  action  that  Lender  might
     request Creditor to take hereunder,  and to sue for,  compromise,  collect
     and receive all such money and other  assets and take any other  action in
     Lender's  own  name or in  Creditor's  name  that  Lender  shall  consider
     advisable for  enforcement  and  collection of  subordinated  debt, and to
     apply any amounts received on senior debt.

<PAGE>

5.   MODIFICATIONS.  At any  time and from  time to  time,  without  Creditor's
     consent or notice to  Creditor  and  without  liability  to  Creditor  and
     without  releasing or impairing any of Lender's rights against Creditor or
     any of Creditor's  obligations  hereunder,  Lender may take  additional or
     other security for senior debt;  release,  exchange,  subordinated or lose
     any security for senior debt; release any person obligated on senior debt,
     modify,  amend or waive  compliance with any agreement  relating to senior
     debt;  grant any  adjustment,  indulgence or forbearance to, or compromise
     with, any person liable for senior debt;  neglect,  delay,  omit,  fail or
     refuse to take or prosecute  any action for  collection of any senior debt
     or to foreclose upon any collateral or take or prosecute any action on any
     agreement securing any senior debt.

6.   SUBORDINATION  OF LIENS.  Creditor  subordinates and makes inferior to any
     security  interests,  liens or mortgages now or hereafter  securing senior
     debt all security interests, liens, or mortgages now or hereafter securing
     subordinated  debt. Any foreclosure  against any property  securing senior
     debt shall  foreclose,  extinguish  and discharge all security  interests,
     liens and mortgages  securing  subordinated debt, and any purchaser at any
     such foreclosure sale shall take title to the property so sold free of all
     security interest, liens and mortgages securing subordinated debt.

7.   STATEMENT   OF   SUBORDINATION;   ASSIGNMENT   BY   CREDITOR;   ADDITIONAL
     INSTRUMENTS.  Debtor and Creditor will cause any instrument  evidencing or
     securing  subordinated  debt to bear upon its face a  statement  that such
     instrument  is  subordinated  to senior debt as set forth  herein and will
     take all actions and execute all documents  appropriate  to carry out this
     agreement.  Creditor  will notify  Lender not less than 10 days before any
     assignment of any subordinated debt.

8.   ASSIGNMENT BY LENDER. Lender's rights under this agreement may be assigned
     in connection with any assignment or transfer of any senior debt.

9.   VENUE. Debtor and Creditor agree that this agreement is performable in the
     county of Lender's address set out above.

10.  CUMULATIVE  RIGHTS;  WAIVERS.  This  instrument is cumulative of all other
     rights  and  securities  of the  Lender.  No waiver by Lender of any right
     hereunder,  with respect to a particular  payment,  shall affect or impair
     its rights in any matters thereafter occurring.

11.  SUCCESSORS AND ASSIGNS. This instrument is binding upon and shall inure to
     the  benefit  of the  heirs,  executors,  administrators,  successors  and
     assigns of each of the parties hereto, but Creditor covenants that it will
     not assign  subordinated  debt,  or any part thereof,  without  making the
     rights and interests of the assignee  subject in all respects to the terms
     of this instrument.

12.  TERMINATION.  This agreement  shall  terminate upon the termination of the
     Senior Facility Agreement and repayment in full of the senior debt.


(LENDER)                    (DEBTOR)                   (CREDITOR)
NationsBank, N.A.           USAA Mutual Fund, Inc.     USAA Capital Corporation
                            USAA Investment Trust
                            USAA Tax Exempt Fund, Inc.
                            USAA State Tax-Free Trust

By  /s/ Joan D'Amico    By  /s/ Michael J.C. Roth  By  /s/ Laurie B. Blank
    ------------------      ---------------------      -----------------------
    Its Vice President      Its President              Its Treasurer

<PAGE>
                                 EXHIBIT 8(n)
<PAGE>

January 12, 1999



USAA Mutual Fund, Inc.,
USAA Investment Trust,
USAA Tax Exempt Fund, Inc., and
USAA State Tax-Free Trust, on behalf of and for the 
benefit of the series 
of funds comprising each such Borrower
as set forth on Schedule A hereto
9800 Fredericksburg Road
San Antonio, Texas 78288

Attention: Michael J.C. Roth, President

Gentlemen:

This  Facility  Agreement  Letter (this  "Agreement")  sets forth the terms and
conditions  for loans (each a "Loan" and  collectively  the "Loans") which USAA
Capital  Corporation  ("CAPCO")  may from time to time make  during  the period
commencing January 12, 1999 and ending January 11, 2000 (the "Facility Period")
to USAA Mutual Fund, Inc., USAA Investment  Trust,  USAA Tax Exempt Fund, Inc.,
and USAA State Tax-Free Trust,  and each investment  company which may become a
party hereto  pursuant to the terms of this  Agreement  (each a "Borrower"  and
collectively  the  "Borrowers"),  each of which is executing  this Agreement on
behalf  of and for the  benefit  of the  series of funds  comprising  each such
Borrower as set forth on Schedule A hereto (as hereafter modified or amended in
accordance with the terms hereof) (each a "Fund" and collectively the "Funds"),
under a master  revolving  credit  facility (the  "Facility").  USAA Investment
Management  Company is the Manager and Investment  Advisor of each Fund.  CAPCO
and the Borrowers hereby agree as follows:

       1.  AMOUNT.  The  aggregate  principal  amount of the Loans which may be
advanced under this Facility shall not exceed, at any one time outstanding, Two
Hundred Fifty Million Dollars ($250,000,000). The aggregate principal amount of
the Loans which may be borrowed by a Borrower  for the benefit of a  particular
Fund under this Facility shall not exceed the borrowing  limit (the  "Borrowing
Limit")  on  borrowings  applicable  to such Fund,  as set forth on  Schedule A
hereto.

       2. PURPOSE AND  LIMITATIONS  ON  BORROWINGS.  Each Borrower will use the
proceeds of each Loan made to it solely for temporary or emergency  purposes of
the Fund for whose  benefit it is  borrowing  in  accordance  with such  Fund's
Borrowing Limit (Schedule A) and prospectus in effect at the time of such Loan.
Portfolio  securities  may not be  purchased  by a Fund  while  there is a Loan
outstanding  under the Facility or any other facility,  if the aggregate amount
of such Loan and any other  such loan  exceeds  5% of the total  assets of such
Fund.

<PAGE>

       3.  BORROWING  RATE AND  MATURITY  OF LOANS.  CAPCO may make  Loans to a
Borrower and the principal  amount of the Loans  outstanding  from time to time
shall  bear  interest  at a rate per  annum  equal  to the rate at which  CAPCO
obtains  funding  in the  capital  markets.  Interest  on the  Loans  shall  be
calculated  on the basis of a year of 360 days and the actual days  elapsed but
shall not exceed the highest lawful rate.  Each loan will be for an established
number  of  days   agreed   upon  by  the   applicable   Borrower   and  CAPCO.
Notwithstanding the above, all Loans to a Borrower shall be made available at a
rate per annum equal to the rate at which CAPCO would make loans to  affiliates
and  subsidiaries.  Further,  if the  CAPCO  rate  exceeds  the rate at which a
Borrower could obtain funds pursuant to the NationsBank,  N.A.  ("NationsBank")
364-day committed  $100,000,000 Master Revolving Credit Facility,  the Borrower
will in the absence of predominating  circumstances,  borrow from  NationsBank.
Any past due principal  and/or  accrued  interest shall bear interest at a rate
per annum equal to the  aggregate of the Federal Funds Rate plus 1 percent (100
basis points) and shall be payable on demand.

       4. ADVANCES, PAYMENTS,  PREPAYMENTS AND READVANCES. Upon each Borrower's
request,  and subject to the terms and conditions contained herein, CAPCO shall
make Loans to each Borrower on behalf of and for the benefit of its  respective
Fund(s) during the Facility  Period,  and each Borrower may at CAPCO's sole and
absolute  discretion,  borrow,  repay and reborrow funds  hereunder.  The Loans
shall be evidenced by a duly executed and delivered Master Grid Promissory Note
in the form of EXHIBIT A. Each Loan  shall be in an  aggregate  amount not less
than One Hundred Thousand United States Dollars (U.S.  $100,000) and increments
of One Thousand United States Dollars (U.S. $1,000) in excess thereof.  Payment
of principal and interest due with respect to each Loan shall be payable at the
maturity of such Loan and shall be made in funds immediately available to CAPCO
prior to 2 p.m.  San Antonio  time on the day such  payment is due, or as CAPCO
shall  otherwise  direct  from  time to time  and,  subject  to the  terms  and
conditions  hereof,  may  be  repaid  with  the  proceeds  of a  new  borrowing
hereunder. Notwithstanding any provision of this Agreement to the contrary, all
Loans, accrued but unpaid interest and other amounts payable hereunder shall be
due and payable upon  termination of the Facility  (whether by  acceleration or
otherwise).

       5. FACILITY  FEE.  Beginning  with the date of this  Agreement and until
such time as all Loans have been irrevocably repaid to CAPCO in full, and CAPCO
is no longer  obligated  to make Loans,  the Funds (to be  allocated  among the
Funds as the Borrowers deem  appropriate)  may pay to CAPCO a facility fee (the
"Facility  Fee") in the amount up to .04 of one percent (4 basis points) of the
amount of the  Commitment,  as it may be  reduced  pursuant  to  section 6. The
Facility Fee shall be payable  quarterly in arrears  beginning  March 31, 1999,
and upon termination of the Facility (whether by acceleration or otherwise).

       6. OPTIONAL TERMINATION OR REDUCTION OF COMMITMENT.  The Borrowers shall
have the right upon at least three (3) business  days prior  written  notice to
CAPCO,  to terminate or reduce the unused portion of the  Commitment.  Any such
reduction  of the  commitment  shall be in the  amount of Five  Million  United
States Dollars (U.S. $5,000,000) or any larger integral multiple of One Million
United States Dollars (U.S. $1,000,000) (except that any reduction may

<PAGE>

be in the aggregate amount of the unused Commitment). Accrued fees with respect
to the terminated Commitment shall be payable to CAPCO on the effective date of
such termination.

       7. MANDATORY TERMINATION OF THE FACILITY. The Facility,  unless extended
by written  amendment,  shall  automatically  terminate  on the last day of the
Facility Period and any Loans then outstanding  (together with accrued interest
thereon and any other amounts owing hereunder) shall be due and payable on such
date.

       8.  COMMITTED  FACILITY.  CAPCO  acknowledges  that  the  Facility  is a
committed facility and that CAPCO shall be obligated to make any Loan requested
during  the  Facility  Period  under this  Agreement,  subject to the terms and
conditions hereof; provided, however, that CAPCO shall not be obligated to make
any Loan if this Facility has been  terminated by the  Borrowers,  or if at the
time of a  request  for a Loan  by a  Borrower  (on  behalf  of the  applicable
Fund(s)) there exists any Event of Default or condition which, with the passage
of time or giving of notice,  or both,  would  constitute or become an Event of
Default with respect to such Borrower (or such applicable Fund(s)).

       9. LOAN  REQUESTS.  Each request for a Loan (each a "Borrowing  Notice")
shall be in writing by the applicable Borrower(s), except that such Borrower(s)
may make an oral  request  (each an "Oral  Request")  provided  that  each Oral
Request  shall be followed by a written  Borrowing  Notice  within one business
day. Each Borrowing  Notice shall specify the following  terms ("Terms") of the
requested  Loan:  (i) the date on which such Loan is to be disbursed,  (ii) the
principal amount of such Loan,  (iii) the Borrower(s)  which are borrowing such
Loan and the  amount of such Loan to be  borrowed  by each  Borrower,  (iv) the
Funds for whose  benefit the loan is being  borrowed and the amount of the Loan
which is for the benefit of each such Fund, and (v) the requested maturity date
of the Loan.  Each  Borrowing  Notice  shall also set forth the total assets of
each Fund for whose  benefit a portion of the Loan is being  borrowed as of the
close of business on the day  immediately  preceding the date of such Borrowing
Notice.  Borrowing notices shall be delivered to CAPCO by 9:00 a.m. San Antonio
time on the day the Loan is requested to be made.

Each  Borrowing  Notice  shall  constitute  a  representation  to  CAPCO by the
applicable  Borrower(s)  that  all of the  representations  and  warranties  in
Section  12 hereof  are true and  correct  as of such date and that no Event of
Default or other  condition which with the passage of time or giving of notice,
or both, would result in an Event of Default, has occurred or is occurring.

       10.  CONFIRMATIONS;  CREDITING OF FUNDS; RELIANCE BY CAPCO. Upon receipt
by CAPCO of a Borrowing Notice:

                (a)  CAPCO  shall  provide  each  applicable  Borrower  written
       confirmation  of the Terms of such Loan via  facsimile or  telecopy,  as
       soon as reasonably practicable;  provided,  however, that the failure to
       do so shall not affect the obligation of any such Borrower;

<PAGE>

                (b) CAPCO shall make such Loan in accordance  with the Terms by
       transfer  of the Loan  amount in  immediately  available  funds,  to the
       account of the applicable  Borrower(s) as specified in EXHIBIT B to this
       Agreement or as such Borrower(s)  shall otherwise  specify to CAPCO in a
       writing signed by an Authorized Individual (as defined in Section 11) of
       such Borrower(s); and

                (c) CAPCO  shall  make  appropriate  entries on the Note or the
       records of CAPCO to reflect  the Terms of the Loan;  provided,  however,
       that the  failure  to do so  shall  not  affect  the  obligation  of any
       Borrower.

                (d) CAPCO  shall be  entitled  to rely  upon and act  hereunder
       pursuant to any Oral Request which it  reasonably  believes to have been
       made by the applicable Borrower through an Authorized Individual. If any
       Borrower  believes that the  confirmation  relating to any Loan contains
       any error or discrepancy from the applicable Oral Request, such Borrower
       will promptly notify CAPCO thereof.

       11.  BORROWING  RESOLUTIONS  AND  OFFICERS'  CERTIFICATES.  Prior to the
making  of any Loan  pursuant  to this  Agreement,  the  Borrowers  shall  have
delivered  to  CAPCO  (a) the  duly  executed  Note,  (b)  Resolutions  of each
Borrower's Trustees or Board of Directors authorizing such Borrower to execute,
deliver and perform  this  Agreement  and the Note on behalf of the  applicable
Funds,  (c) an Officer's  Certificate  in  substantially  the form set forth in
EXHIBIT  D to this  Agreement,  authorizing  certain  individuals  ("Authorized
Individuals"),  to take on behalf of each Borrower (on behalf of the applicable
Funds) actions contemplated by this Agreement and the Note, and (d) the Opinion
of Counsel to USAA Investment  Management  Company,  Manager and Advisor to the
Borrowers, with respect to such matters as CAPCO may reasonably request .

       12.  REPRESENTATIONS  AND WARRANTIES.  In order to induce CAPCO to enter
into this Agreement and to make the Loans provided for hereunder, each Borrower
hereby  makes with  respect to itself,  and as may be  relevant,  the series of
Funds comprising such Borrower,  the following  representations and warranties,
which shall survive the execution and delivery hereof and of the Note:

                (a) ORGANIZATION,  STANDING, ETC. The Borrower is a corporation
       or trust duly organized,  validly  existing,  and in good standing under
       applicable state laws and has all requisite corporate or trust power and
       authority to carry on its  respective  businesses  as now  conducted and
       proposed to be  conducted,  to enter into this  Agreement  and all other
       documents  to be  executed  by it in  connection  with the  transactions
       contemplated hereby, to issue and borrow under the Note and to carry out
       the terms hereof and thereof;

                (b) FINANCIAL  INFORMATION;  DISCLOSURE,  ETC. The Borrower has
       furnished CAPCO with certain financial  statements of such Borrower with
       respect to itself and the applicable  Funds, all of which such financial
       statements  have been prepared in  accordance  with  generally  accepted
       accounting principles applied on a consistent basis

<PAGE>

       and fairly  present the financial  position and results of operations of
       such Borrower and the applicable  Funds on the dates and for the periods
       indicated. Neither this Agreement nor any financial statements,  reports
       or other documents or  certificates  furnished to CAPCO by such Borrower
       or the applicable Funds in connection with the transactions contemplated
       hereby contain any untrue  statement of a material fact or omit to state
       any material fact necessary to make the statements  contained  herein or
       therein in light of the circumstances when made not misleading;

                (c)  AUTHORIZATION;  COMPLIANCE  WITH  OTHER  INSTRUMENTS.  The
       execution,  delivery and performance of this Agreement and the Note, and
       borrowings  hereunder,  have  been  duly  authorized  by  all  necessary
       corporate  or trust  action of the  Borrower  and will not result in any
       violation of or be in conflict  with or  constitute a default  under any
       term of the charter,  by-laws or trust agreement of such Borrower or the
       applicable  Funds,  or of any  borrowing  restrictions  or prospectus or
       statement of additional  information  of such Borrower or the applicable
       Funds,  or  of  any  agreement,  instrument,  judgment,  decree,  order,
       statute, rule or governmental regulation applicable to such Borrower, or
       result in the creation of any mortgage, lien, charge or encumbrance upon
       any of the properties or assets of such Borrower or the applicable Funds
       pursuant to any such term. The Borrower and the applicable Funds are not
       in violation of any term of their respective  charter,  by-laws or trust
       agreement,  and  such  Borrower  and  the  applicable  Funds  are not in
       violation of any material  term of any  agreement or instrument to which
       they are a party,  or to the best of such Borrower's  knowledge,  of any
       judgment,  decree,  order,  statute,  rule  or  governmental  regulation
       applicable to them;

                (d) SEC COMPLIANCE.  The Borrower and the applicable  Funds are
       in  compliance  in all  material  respects  with all  federal  and state
       securities  or similar  laws and  regulations,  including  all  material
       rules,  regulations  and  administrative  orders of the  Securities  and
       Exchange Commission (the "SEC") and applicable Blue Sky authorities. The
       Borrower  and the  applicable  Funds are in  compliance  in all material
       respects  with all of the  provisions of the  Investment  Company Act of
       1940,  and such  Borrower  has filed all  reports  with the SEC that are
       required of it or the applicable Funds;

                (e) LITIGATION.  There is no action, suit or proceeding pending
       or, to the best of the  Borrower's  knowledge,  threatened  against such
       Borrower or the  applicable  Funds in any court or before any arbitrator
       or  governmental  body which seeks to restrain  any of the  transactions
       contemplated by this Agreement or which, if adversely determined,  could
       have a material  adverse effect on the assets or business  operations of
       such  Borrower or the  applicable  Funds or the ability of such Borrower
       and the applicable Funds to pay and perform their obligations  hereunder
       and under the Notes;

                (f) BORROWERS'  RELATIONSHIP TO FUNDS.  The assets of each Fund
       for whose  benefit  Loans are  borrowed by the  applicable  Borrower are
       subject  to and  liable  for such  Loans and are  available  (except  as
       subordinated to borrowings under the NationsBank  committed facility) to
       the applicable Borrower for the repayment of such Loans; and

<PAGE>

                (g) YEAR 2000  PREPAREDNESS.  Each Borrower has (i) initiated a
       review and  assessment  of all areas within its business and  operations
       (including  those  affected by suppliers,  vendors and  customers)  that
       could be  adversely  affected by the "Year 2000  Problem"  (that is, the
       risk that computer  applications  used by such Borrower may be unable to
       recognize  and  perform  properly  date-sensitive   functions  involving
       certain  dates  prior to and any date after  December  31,  1999),  (ii)
       developed a plan and timeline for  addressing the Year 2000 Problem on a
       timely  basis,  and (iii) to date,  implemented  that plan in accordance
       with that timetable.  Based on the foregoing,  such Borrower  reasonably
       believes  that  all  computer  applications  that  are  material  to its
       business and operations are reasonably  expected on a timely basis to be
       able to perform properly  date-sensitive  functions for all dates before
       and after January 1, 2000 (that is, be "Year 2000 compliant"), except to
       the extent that a failure to do so could not  reasonably  be expected to
       have a material  adverse effect on the assets or business  operations of
       such  Borrower or the  applicable  Funds or the ability of such Borrower
       and the applicable Funds to pay and perform their obligations  hereunder
       and under the Note.

       13.  AFFIRMATIVE  COVENANTS  OF THE  BORROWERS.  Until  such time as all
amounts of principal  and  interest due to CAPCO by a Borrower  pursuant to any
Loan made to such Borrower is irrevocably  paid in full, and until the Facility
is terminated, such Borrower (for itself and on behalf of its respective Funds)
agrees:

                (a) To  deliver to CAPCO as soon as  possible  and in any event
       within  ninety  (90)  days  after  the end of each  fiscal  year of such
       Borrower and the applicable Funds, Statements of Assets and Liabilities,
       Statements of Operations and Statements of Changes in Net Assets of each
       applicable  Fund for such fiscal year,  as set forth in each  applicable
       Fund's Annual Report to shareholders  together with a calculation of the
       maximum  amount  which  each  applicable  Fund  could  borrow  under its
       Borrowing Limit as of the end of such fiscal year;

                (b) To deliver to CAPCO as soon as  available  and in any event
       within seventy-five (75) days after the end of each semiannual period of
       such  Borrower  and the  applicable  Funds,  Statements  of  Assets  and
       Liabilities,  Statement of Operations  and  Statements of Changes in Net
       Assets of each applicable Fund as of the end of such semiannual  period,
       as set forth in each applicable Funds Semiannual Report to shareholders,
       together with a calculation of the maximum amount which each  applicable
       Fund  could  borrow  under  its  Borrowing  Limit  at the  end  of  such
       semiannual period;

                (c) To deliver to CAPCO prompt notice of the  occurrence of any
       event or  condition  which  constitutes,  or is likely  to result  in, a
       change in such Borrower or any applicable Fund which could reasonably be
       expected to materially  adversely  affect the ability of any  applicable
       Fund to  promptly  repay  outstanding  Loans made for its benefit or the
       ability of such Borrower to perform its obligations under this Agreement
       or the Note;

<PAGE>

                (d) To do,  or  cause  to be  done,  all  things  necessary  to
       preserve  and keep in full  force  and  effect  the  corporate  or trust
       existence  of such  Borrower  and all  permits,  rights  and  privileges
       necessary  for  the  conduct  of its  businesses  and to  comply  in all
       material  respects with all  applicable  laws,  regulations  and orders,
       including without limitation,  all rules and regulations  promulgated by
       the SEC;

                (e) To  promptly  notify  CAPCO of any  litigation,  threatened
       legal  proceeding or  investigation  by a governmental  authority  which
       could  materially  affect the ability of such Borrower or the applicable
       Funds to promptly repay the outstanding Loans or otherwise perform their
       obligations hereunder;

                (f) In the event a Loan for the benefit of a particular Fund is
       not repaid in full  within 10 days  after the date it is  borrowed , and
       until  such Loan is repaid in full,  to  deliver  to CAPCO,  within  two
       business  days  after  each  Friday  occurring  after  such 10th day,  a
       statement setting forth the total assets of such Fund as of the close of
       business on each such Friday; and

                (g) Upon the  request of CAPCO  which may be made by CAPCO from
       time to time in the event  CAPCO in good faith  believes  that there has
       been a material  adverse  change in the capital  markets  generally,  to
       deliver  to CAPCO,  within two  business  days  after  such  request,  a
       statement  setting forth the total assets of each Fund for whose benefit
       a Loan is outstanding on the date of such request.

       14. NEGATIVE COVENANTS OF THE BORROWERS.  Until such time as all amounts
of principal and interest due to CAPCO by a Borrower  pursuant to any Loan made
to such  Borrower  is  irrevocably  paid in full,  and  until the  Facility  is
terminated,  such Borrower (for itself and on behalf of its  respective  Funds)
agrees:

                (a) Not to incur any  indebtedness  for  borrowed  money (other
       than pursuant to the One Hundred Million Dollar ($100,000,000) committed
       Master  Revolving  Credit  Facility with  NationsBank,  the Five Hundred
       Million  Dollar  ($500,000,000)   uncommitted  Master  Revolving  Credit
       Facility with CAPCO and for overdrafts  incurred at the custodian of the
       Funds from time to time in the  normal  course of  business)  except the
       Loans,  without the prior written  consent of CAPCO,  which consent will
       not be unreasonably withheld; and

                (b) Not to dissolve or  terminate  its  existence,  or merge or
       consolidate   with  any  other   person  or  entity,   or  sell  all  or
       substantially  all of its  assets in a single  transaction  or series of
       related  transactions  (other than assets  consisting of margin  stock),
       each without the prior written consent of CAPCO,  which consent will not
       be  unreasonably  withheld;  provided  that a Borrower  may without such
       consent merge,  consolidate  with, or purchase  substantially all of the
       assets of, or sell  substantially  all of its  assets to, an  affiliated
       investment  company or series thereof,  as provided for in Rule 17a-8 of
       the Investment Company Act of 1940.

<PAGE>

       15. EVENTS OF DEFAULT. If any of the following events (each an "Event of
Default")  shall  occur  (it being  understood  that an Event of  Default  with
respect to one Fund or Borrower  shall not  constitute an Event of Default with
respect to any other Fund or Borrower):

                (a) Any  Borrower  or Fund  shall  default  in the  payment  of
       principal or interest on any Loan or any other fee due  hereunder  for a
       period of five (5) days after the same becomes due and payable,  whether
       at maturity or with  respect to any Facility Fee at a date fixed for the
       payment thereof;

                (b) Any Borrower or Fund shall default in the performance of or
       compliance with any term contained in Section 13 hereof and such default
       shall not have been  remedied  within  thirty  (30) days  after  written
       notice thereof shall have been given such Borrower or Fund by CAPCO;

                (c) Any Borrower or Fund shall default in the performance of or
       compliance with any term contained in Section 14 hereof;

                (d) Any Borrower or Fund shall  default in the  performance  or
       compliance  with any other term contained  herein and such default shall
       not have been  remedied  within  thirty (30) days after  written  notice
       thereof shall have been given such Borrower or Fund by CAPCO;

                (e) Any  representation  or warranty made by a Borrower or Fund
       herein or pursuant hereto shall prove to have been false or incorrect in
       any material respect when made;

                (f) An event of default shall occur and be continuing under any
       other facility;  then, in any event, and at any time thereafter,  if any
       Event of Default shall be continuing, CAPCO may by written notice to the
       applicable  Borrower or Fund (i)  terminate the Facility with respect to
       such  Borrower or Fund and (ii)  declare the  principal  and interest in
       respect of any outstanding  Loans with respect to such Borrower or Fund,
       and all other  amounts due  hereunder  with respect to such  Borrower or
       Fund,  to be  immediately  due and payable  whereupon  the principal and
       interest in respect  thereof and all other amounts due  hereunder  shall
       become forthwith due and payable without presentment, demand, protest or
       other  notice of any  kind,  all of which  are  expressly  waived by the
       Borrowers.

       16.  NEW  BORROWERS;  NEW  FUNDS.  So long as no  Event  of  Default  or
condition  which,  with the  passage of time or the giving of notice,  or both,
would  constitute or become an Event of Default has occurred and is continuing,
and with the prior  consent of CAPCO,  which  consent will not be  unreasonably
withheld:

<PAGE>

                (a) Any investment company that becomes part of the same "group
       of  investment  companies"  (as that term is defined in Rule 11a-3 under
       the  Investment  Company Act of 1940) as the original  Borrowers to this
       Agreement,  may, by  submitting  an amended  Schedule A and Exhibit B to
       this  Agreement to CAPCO (which  amended  Schedule A and Exhibit B shall
       replace the corresponding Schedule and Exhibit which are, then a part of
       this  Agreement)  and  such  other  documents  as CAPCO  may  reasonably
       request,  become a party to this  Agreement  and may become a "Borrower"
       hereunder; and

                (b) A Borrower  may, by  submitting  an amended  Schedule A and
       Exhibit B to this  Agreement  to CAPCO  (which  amended  Schedule  A and
       Exhibit B shall replace the corresponding Schedule and Exhibit which are
       then a part of this  Agreement),  add additional Funds for whose benefit
       such Borrower may borrow Loans.  No such amendment of Schedule A to this
       Agreement shall amend the Borrowing Limit applicable to any Fund without
       the prior approval of CAPCO.

       17. LIMITED  RECOURSE.  CAPCO agrees (i) that any claim,  liability,  or
obligation  arising  hereunder  or under the Note  whether  on  account  of the
principal of any Loan,  interest thereon,  or any other amount due hereunder or
thereunder  shall be satisfied  only from the assets of the  specific  Fund for
whose  benefit a Loan is  borrowed  and in any event in an amount not to exceed
the outstanding  principal amount of any Loan borrowed for such Fund's benefit,
together  with  accrued and unpaid  interest  due and owing  thereon,  and such
Fund's  share  of any  other  amount  due  hereunder  and  under  the  Note (as
determined in accordance with the provisions hereof) and (ii) that no assets of
any fund shall be used to satisfy any claim,  liability,  or obligation arising
hereunder or under the Note with respect to the outstanding principal amount of
any Loan  borrowed  for the benefit of any other Fund or any accrued and unpaid
interest  due and owing  thereon or such other Fund's share of any other amount
due  hereunder  and  under  the  Note (as  determined  in  accordance  with the
provisions hereof).

       18. REMEDIES ON DEFAULT. In case any one or more Events of Default shall
occur and be continuing, CAPCO may proceed to protect and enforce its rights by
an action at law, suit in equity or other appropriate proceedings,  against the
applicable  Borrower(s)  and/or  Fund(s),  as the case may be. In the case of a
default  in the  payment of any  principal  or  interest  on any Loan or in the
payment of any fee due hereunder,  the relevant  Fund(s) (to be allocated among
such Funds as the Borrowers deem  appropriate)  shall pay to CAPCO such further
amount as shall be  sufficient  to cover the cost and  expense  of  collection,
including, without limitation, reasonable attorney's fees and expenses.

       19. NO WAIVER OF  REMEDIES.  No course of dealing or failure or delay on
the part of CAPCO in exercising any right or remedy hereunder or under the Note
shall  constitute a waiver of any right or remedy  hereunder or under the Note,
nor shall any partial  exercise of any right or remedy  hereunder  or under the
Note preclude any further  exercise  thereof or the exercise of any other right
or remedy  hereunder  or under the Note.  Such  rights and  remedies  expressly
provided are cumulative and not exclusive of any rights or remedies which CAPCO
would otherwise have.

<PAGE>

       20.  EXPENSES.  The  Fund(s)  (to be  allocated  among  the Funds as the
Borrowers deem  appropriate)  shall pay on demand all reasonable  out-of-pocket
costs and expenses (including reasonable attorney's fees and expenses) incurred
by  CAPCO  in  connection  with  the  collection  and  any  other   enforcement
proceedings of or regarding this Agreement, any Loan or the Note.

       21.  BENEFIT OF AGREEMENT.  This Agreement and the Note shall be binding
upon  and  inure  for  the  benefit  of and be  enforceable  by the  respective
successors  and assigns of the parties  hereto;  provided that no party to this
Agreement  or the Note may  assign any of its rights  hereunder  or  thereunder
without the prior written consent of the other parties.

       22.  NOTICES.  All  notices  hereunder  and all  written,  facsimile  or
telecopied  confirmations  of Oral Requests made hereunder shall be sent to the
Borrowers as indicated on EXHIBIT B and to CAPCO as indicated on EXHIBIT C.

       23.  MODIFICATIONS.  No provision  of this  Agreement or the Note may be
waived,  modified  or  discharged  except by mutual  written  agreement  of all
parties. THIS WRITTEN LOAN AGREEMENT AND THE NOTE REPRESENT THE FINAL AGREEMENT
BETWEEN  THE  PARTIES  AND  MAY  NOT BE  CONTRADICTED  BY  EVIDENCE  OF  PRIOR,
CONTEMPORANEOUS  OR SUBSEQUENT  ORAL  AGREEMENTS  OF THE PARTIES.  THERE ARE NO
UNWRITTEN AGREEMENTS BETWEEN THE PARTIES.

       24. GOVERNING LAW AND JURISDICTION.  This Agreement shall be governed by
and construed in accordance  with the laws of the state of Texas without regard
to the choice of law provisions thereof.

       25. TRUST  DISCLAIMER.  Neither the  shareholders,  trustees,  officers,
employees and other agents of any Borrower or Fund shall be personally bound by
or liable for any indebtedness,  liability or obligation hereunder or under the
Note nor shall resort be had to their private  property for the satisfaction of
any obligation or claim hereunder.

If this letter  correctly  reflects your agreement with us, please execute both
copies hereof and return one to us,  whereupon this Agreement  shall be binding
upon the Borrowers, the Funds and CAPCO.

Sincerely,

USAA CAPITAL CORPORATION


By:      /S/ LAURIE B. BLANK
         -----------------------
         Laurie B. Blank
         Vice President-Treasurer

<PAGE>

AGREED AND ACCEPTED this 12th Day of January, 1999.

USAA MUTUAL FUND, INC., 
on behalf of and for the benefit
of its series of Funds as set forth
on Schedule A to this Agreement


By:      /S/ MICHAEL J.C. ROTH
         -----------------------
         Michael J.C. Roth
         President


USAA INVESTMENT  TRUST,
on behalf of and for the benefit
of its series of Funds as set forth
on Schedule A to this Agreement


By:      /S/ MICHAEL J.C. ROTH
         -----------------------
         Michael J.C. Roth
         President


USAA TAX EXEMPT FUND,  INC.,
on behalf of and for the benefit
of its series of Funds as set forth
on Schedule A to this Agreement


By:      /S/ MICHAEL J.C. ROTH
         -----------------------
         Michael J.C. Roth
         President


USAA STATE  TAX-FREE  TRUST,
on behalf of and for the benefit
of its series of Funds as set forth
on Schedule A to this Agreement


By:      /S/ MICHAEL J.C. ROTH
         -----------------------
         Michael J.C. Roth
         President

<PAGE>

                                   SCHEDULE A
                                   ----------


                       FUNDS FOR WHOSE BENEFIT LOANS CAN
                      BE BORROWED UNDER FACILITY AGREEMENT

BORROWER                 FUNDS                       BORROWING LIMIT
- --------                 -----                       ---------------
                                                     (Maximum  percent of total
                                                     assets    which   can   be
                                                     borrowed   under  Facility
                                                     and    the     uncommitted
                                                     facility with CAPCO)

USAA MUTUAL FUND, INC.       USAA Aggressive Growth       5% of Total Assets
                             USAA Growth & Income                 "
                             USAA Income Stock                    "
                             USAA Short-Term Bond                 "
                             USAA Money Market                    "
                             USAA Growth                          "
                             USAA Income                          "
                             USAA S&P 500 Index                   "
                             USAA Science & Technology            "
                             USAA First Start Growth              "

USAA INVESTMENT TRUST        USAA Cornerstone Strategy            "
                             USAA Gold                            "
                             USAA International                   "
                             USAA World Growth                    "
                             USAA GNMA Trust                      "
                             USAA Treasury Money Market Trust     "
                             USAA Emerging Markets                "
                             USAA Growth and Tax Strategy         "
                             USAA Balanced Strategy               "
                             USAA Growth Strategy                 "
                             USAA Income Strategy                 "

USAA TAX EXEMPT FUND, INC.   USAA Long-Term                       "
                             USAA Intermediate-Term               "
                             USAA Short-Term                      "
                             USAA Tax Exempt Money Market         "
                             USAA California Bond                 "
                             USAA California Money Market         "
                             USAA New York Bond                   "
                             USAA New York Money Market           "
                             USAA Virginia Bond                   "
                             USAA Virginia Money Market           "

USAA STATE TAX-FREE TRUST    USAA Florida Tax-Free Income         "
                             USAA Florida Tax-Free Money Market   "
                             USAA Texas Tax-Free Income           "
                             USAA Texas Tax-Free Money Market     "

<PAGE>

                                                                      EXHIBIT A
                                                                      ---------

                          MASTER GRID PROMISSORY NOTE


U.S. $250,000,000                                       Dated: January 12, 1999


       FOR VALUE  RECEIVED,  each of the  undersigned  (each a  "Borrower"  and
collectively the "Borrowers"),  severally and not jointly, on behalf of and for
the benefit of the series of funds  comprising  each such Borrower as listed on
Schedule A to the  Agreement as defined  below (each a "Fund" and  collectively
the "Funds") promises to pay to the order of USAA Capital Corporation ("CAPCO")
at CAPCO's  office  located at 9800  Fredericksburg  Road,  San Antonio,  Texas
78288,  in  lawful  money of the  United  States  of  America,  in  immediately
available  funds,  the  principal  amount  of all  Loans  made by CAPCO to such
Borrower for the benefit of the applicable  Funds under the Facility  Agreement
Letter dated January 12, 1999 (as amended or modified, the "Agreement"),  among
the  Borrowers and CAPCO,  together with interest  thereon at the rate or rates
set forth in the Agreement.  All payments of interest and principal outstanding
shall be made in accordance with the terms of the Agreement.

       This Note  evidences  Loans made  pursuant  to, and is  entitled  to the
benefits  of,  the  Agreement.  Terms not  defined in this Note shall be as set
forth in the Agreement.

       CAPCO is authorized to endorse the  particulars  of each Loan  evidenced
hereby  on  the  attached  Schedule  and  to  attach  additional  Schedules  as
necessary,  provided  that the failure of CAPCO to do so or to do so accurately
shall not affect the obligations of any Borrower (or the Fund for whose benefit
it is borrowing) hereunder.

       Each Borrower waives all claims to  presentment,  demand,  protest,  and
notice  of  dishonor.  Each  Borrower  agrees  to pay all  reasonable  costs of
collection,  including  reasonable  attorney's  fees  in  connection  with  the
enforcement of this Note.

       CAPCO hereby agrees (i) that any claim, liability, or obligation arising
hereunder  or under the  Agreement  whether on account of the  principal of any
Loan,  interest thereon,  or any other amount due hereunder or thereunder shall
be satisfied only from the assets of the specific Fund for whose benefit a Loan
is  borrowed  and in any  event in an  amount  not to  exceed  the  outstanding
principal  amount of any Loan borrowed for such Fund's  benefit,  together with
accrued and unpaid interest due and owing thereon, and such Fund's share of any
other amount due hereunder and under the Agreement (as determined in accordance
with the provisions of the Agreement) and (ii) that no assets of any Fund shall
be used to satisfy any claim,  liability,  or obligation  arising  hereunder or
under the Agreement  with respect to the  outstanding  principal  amount of any
Loan  borrowed  for the  benefit  of any other Fund or any  accrued  and unpaid
interest  due and owing  thereon or such other Fund's share of any other amount
due hereunder and under the  Agreement  (as  determined in accordance  with the
provisions of the Agreement).

<PAGE>

       Neither the shareholders, trustees, officers, employees and other agents
of any  Borrower  or Fund  shall  be  personally  bound  by or  liable  for any
indebtedness,  liability  or  obligation  hereunder or under the Note nor shall
resort be had to their private  property for the satisfaction of any obligation
or claim hereunder.

       Loans under the Agreement and this Note are  subordinated  to loans made
under the  $100,000,000  364-day  committed  Mater  Revolving  Credit  Facility
Agreement  between the Borrowers and  NationsBank,  N.A.  (NationsBank),  dated
January 13,  1999,  in the manner and to the extent set forth in the  Agreement
among the Borrowers, CAPCO and NationsBank, dated January 13, 1999.

       This Note shall be governed by the laws of the state of Texas.

                                                    USAA MUTUAL FUND,  INC., on
                                                    behalf   of  and   for  the
                                                    benefit  of its  series  of
                                                    Funds   as  set   forth  on
                                                    Schedule A to the Agreement


                                                    By:  /S/ MICHAEL J.C. ROTH
                                                         ----------------------
                                                         Michael J.C. Roth
                                                         President


                                                    USAA  INVESTMENT  TRUST, on
                                                    behalf   of  and   for  the
                                                    benefit  of its  series  of
                                                    Funds   as  set   forth  on
                                                    Schedule A to the Agreement


                                                    By:  /S/ MICHAEL J.C. ROTH
                                                         ----------------------
                                                         Michael J.C. Roth
                                                         President

<PAGE>

                                                    USAA TAX EXEMPT FUND, INC.,
                                                    on  behalf  of and  for the
                                                    benefit  of its  series  of
                                                    Funds   as  set   forth  on
                                                    Schedule A to the Agreement


                                                    By:  /S/ MICHAEL J.C. ROTH
                                                         ----------------------
                                                         Michael J.C. Roth
                                                         President


                                                    USAA STATE TAX-FREE  TRUST,
                                                    on  behalf  of and  for the
                                                    benefit  of its  series  of
                                                    Funds   as  set   forth  on
                                                    Schedule A to the Agreement


                                                    By:  /S/ MICHAEL J.C. ROTH
                                                         ----------------------
                                                         Michael J.C. Roth
                                                         President

<PAGE>

                         LOANS AND PAYMENT OF PRINCIPAL

This  schedule  (grid) is  attached to and made a part of the  Promissory  Note
dated January 12, 1999,  executed by USAA MUTUAL FUND,  INC.,  USAA  INVESTMENT
TRUST,  USAA TAX EXEMPT FUND,  INC. AND USAA STATE  TAX-FREE TRUST on behalf of
and for the  benefit  of the  series of funds  comprising  each  such  Borrower
payable to the order of USAA CAPITAL CORPORATION.

[GRID]
Date of Loan

Borrower
and Fund

Amount of 
Loan

Type of Rate and
Interest Rate on Date 
of Borrowing

Amount of 
Principal Repaid

Date of 
Repayment

Other 
Expenses

Notation made 
by

<PAGE>

                                                                      EXHIBIT B
                                                                      ---------

                            USAA CAPITAL CORPORATION
                                MASTER REVOLVING
                           CREDIT FACILITY AGREEMENT
                           BORROWER INFORMATION SHEET


BORROWER:   USAA MUTUAL FUND,  INC.,  USAA  INVESTMENT  TRUST,  USAA TAX EXEMPT
            FUND, INC. AND USAA STATE TAX-FREE TRUST

ADDRESS FOR NOTICES AND OTHER COMMUNICATIONS TO THE BORROWER:

                          9800 Fredericksburg Road
                          San Antonio, Texas 78288 (For Federal Express, 78240)
                          Attention:       John W. Saunders, Jr.
                                           Senior Vice President,
                                           Fixed Income Investments

                          Telephone:       (210) 498-7320
                          Telecopy:        (210) 498-5689

                                           David G. Peebles
                                           Senior Vice President,
                                           Equity Investments

                          Telephone:       (210) 498-7340
                          Telecopy:        (210) 498-2954

ADDRESS FOR BORROWING AND PAYMENTS:

                          9800 Fredericksburg Road
                          San Antonio, Texas 78288
                          Attention:       Caryl J. Swann

                          Telephone:       (210) 498-7303
                          Telecopy:        (210) 498-0382 or 498-7819
                          Telex:           767424

INSTRUCTIONS FOR PAYMENTS TO BORROWER:

WE PAY VIA:  __X__FED FUNDS   _____CHIPS

<PAGE>

TO:    (PLEASE  PLACE  BANK NAME,  CORRESPONDENT  NAME (IF  APPLICABLE),  CHIPS
       AND/OR FED FUNDS ACCOUNT NUMBER BELOW)

STATE STREET BANK AND TRUST COMPANY, BOSTON, MASSACHUSETTS
- ----------------------------------------------------------

ABA #011-00-0028
- ----------------


USAA MUTUAL FUND, INC. 
======================

USAA AGGRESSIVE GROWTH FUND                 ACCT.# 6938-502-9
- -------------------------------------------------------------
USAA GROWTH & INCOME FUND                   ACCT.# 6938-519-3
- -------------------------------------------------------------
USAA INCOME STOCK FUND                      ACCT.# 6938-495-6
- -------------------------------------------------------------
USAA SHORT-TERM BOND FUND                   ACCT.# 6938-517-7
- -------------------------------------------------------------
USAA MONEY MARKET FUND                      ACCT.# 6938-498-0
- -------------------------------------------------------------
USAA GROWTH FUND                            ACCT.# 6938-490-7
- -------------------------------------------------------------
USAA INCOME FUND                            ACCT.# 6938-494-9
- -------------------------------------------------------------
USAA S&P 500 INDEX FUND                     ACCT.# 6938-478-2
- -------------------------------------------------------------
USAA SCIENCE & TECHNOLOGY FUND              ACCT.# 6938-515-1
- -------------------------------------------------------------
USAA FIRST START GROWTH FUND                ACCT.# 6938-468-3
- -------------------------------------------------------------

USAA INVESTMENT TRUST
=====================

USAA CORNERSTONE STRATEGY FUND              ACCT.# 6938-487-3
- -------------------------------------------------------------
USAA GOLD FUND                              ACCT.# 6938-488-1
- -------------------------------------------------------------
USAA INTERNATIONAL FUND                     ACCT.# 6938-497-2
- -------------------------------------------------------------
USAA WORLD GROWTH FUND                      ACCT.# 6938-504-5
- -------------------------------------------------------------
USAA GNMA TRUST                             ACCT.# 6938-486-5
- -------------------------------------------------------------
USAA TREASURY MONEY MARKET TRUST            ACCT.# 6938-493-1
- -------------------------------------------------------------
USAA EMERGING MARKETS FUND                  ACCT.# 6938-501-1
- -------------------------------------------------------------

<PAGE>

USAA GROWTH AND TAX STRATEGY FUND           ACCT.# 6938-509-4
- -------------------------------------------------------------
USAA BALANCED STRATEGY FUND                 ACCT.# 6938-507-8
- -------------------------------------------------------------
USAA GROWTH STRATEGY FUND                   ACCT.# 6938-510-2
- -------------------------------------------------------------
USAA INCOME STRATEGY FUND                   ACCT.# 6938-508-6
- -------------------------------------------------------------

USAA TAX EXEMPT FUND, INC.
==========================

USAA LONG-TERM FUND                         ACCT.# 6938-492-3
- -------------------------------------------------------------
USAA INTERMEDIATE-TERM FUND                 ACCT.# 6938-496-4
- -------------------------------------------------------------
USAA SHORT-TERM FUND                        ACCT.# 6938-500-3
- -------------------------------------------------------------
USAA TAX EXEMPT MONEY MARKET FUND           ACCT.# 6938-514-4
- -------------------------------------------------------------
USAA CALIFORNIA BOND FUND                   ACCT.# 6938-489-9
- -------------------------------------------------------------
USAA CALIFORNIA MONEY MARKET FUND           ACCT.# 6938-491-5
- -------------------------------------------------------------
USAA NEW YORK BOND FUND                     ACCT.# 6938-503-7
- -------------------------------------------------------------
USAA NEW YORK MONEY MARKET FUND             ACCT.# 6938-511-0
- -------------------------------------------------------------
USAA VIRGINIA BOND FUND                     ACCT.# 6938-512-8
- -------------------------------------------------------------
USAA VIRGINIA MONEY MARKET FUND             ACCT.# 6938-513-6
- -------------------------------------------------------------

USAA STATE TAX-FREE TRUST
=========================

USAA FLORIDA TAX-FREE INCOME FUND           ACCT.# 6938-473-3
- -------------------------------------------------------------
USAA FLORIDA TAX-FREE MONEY MARKET FUND     ACCT.# 6938-467-5
- -------------------------------------------------------------
USAA TEXAS TAX-FREE INCOME FUND             ACCT.# 6938-602-7
- -------------------------------------------------------------
USAA TEXAS TAX-FREE MONEY MARKET FUND       ACCT.# 6938-601-9
- -------------------------------------------------------------

<PAGE>

                                                                      EXHIBIT C
                                                                      ---------

                      ADDRESS FOR USAA CAPITAL CORPORATION

                            USAA Capital Corporation
                            9800 Fredericksburg Road
                            San Antonio, Texas 78288

                            Attention:          Laurie B. Blank
                            Telephone No.:      (210) 498-0825
                            Telecopy No.:       (210) 498-6566

<PAGE>

                                                                      EXHIBIT D
                                                                      ---------

                             OFFICER'S CERTIFICATE
                             ---------------------

The undersigned  hereby certifies that he is the duly elected Secretary of USAA
Mutual Fund, Inc., USAA Investment  Trust,  USAA Tax Exempt Fund, Inc. and USAA
State Tax-Free  Trust and that he is authorized to execute this  Certificate on
behalf of USAA Mutual Fund, Inc., USAA Investment  Trust, USAA Tax Exempt Fund,
Inc. and USAA State Tax-Free Trust. The undersigned hereby further certifies to
the following:

The following  individuals  are duly authorized to act on behalf of USAA Mutual
Fund,  Inc., USAA Investment  Trust,  USAA Tax Exempt Fund, Inc. and USAA State
Tax-Free Trust, by transmitting telephonic, telex, or telecopy instructions and
other  communications  with regard to borrowing  and  payments  pursuant to the
committed Master Revolving Credit Agreement with USAA Capital Corporation.  The
signature set opposite the name of each individual  below is that  individual's
genuine signature.

         NAME                       OFFICE                     SIGNATURE
         ----                       ------                     ---------


Michael J.C. Roth          President                  /S/ MICHAEL J.C. ROTH
                                                      -------------------------

John W. Saunders, Jr.      Senior Vice President,
                           Fixed Income Investments   /S/ JOHN W. SAUNDERS, JR.
                                                      -------------------------

David G. Peebles           Senior Vice President,
                           Equity Investments         /S/ DAVID G. PEEBLES
                                                      -------------------------

Kenneth E. Willmann        Vice President,
                           Mutual Fund Portfolios     /S/ KENNETH E. WILLMANN
                                                      -------------------------

Sherron A. Kirk            Vice President,
                           Controller                 /S/ SHERRON A. KIRK
                                                      -------------------------

Caryl J. Swann             Executive Director,
                           Mutual Fund Analysis
                           and Support                /S/ CARYL J. SWANN
                                                      -------------------------

IN WITNESS  WHEREOF,  I have executed this  Certificate  as of this 12th day of
January, 1999.


                                                      /S/ MICHAEL D. WAGNER
                                                      -------------------------
                                                      Michael D. Wagner
                                                      Secretary

<PAGE>

I, Michael J.C.  Roth,  President of USAA Mutual Fund,  Inc.,  USAA  Investment
Trust,  USAA Tax Exempt Fund, Inc. And USAA State Tax-Free Trust hereby certify
that  Michael D. Wagner is, and has been at all times since a date prior to the
date of this Certificate,  the duly elected, qualified, and acting Secretary of
USAA Mutual Fund, Inc., USAA Investment  Trust,  USAA Tax Exempt Fund, Inc. And
USAA State  Tax-Free  Trust and that the  signature set forth above is his true
and correct signature.


DATE: January 12, 1999                                /S/ MICHAEL J.C. ROTH
                                                      -------------------------
                                                      Michael J.C. Roth
                                                      President



                                 EXHIBIT 9(b)
<PAGE>

                            GOODWIN, PROCTER & HOAR
                               COUNSELLORS AT LAW
                                 EXCHANGE PLACE
                        BOSTON, MASSACHUSETTS 02109-2881

                                                      Telephone (617) 570-1000
                                                     Telecopier (617) 523-1231

                               February 26, 1999

USAA Mutual Fund, Inc.
USAA Building
9800 Fredericksburg Road
San Antonio, TX  78288

Ladies and Gentlemen:

         As counsel to USAA  Mutual  Fund,  Inc.  (the  "Company"),  a Maryland
corporation,  we have been  asked to render  our  opinion  with  respect to the
issuance of shares of capital stock,  $.01 par value per share, of the USAA S&P
500 Index Fund (the  "Shares"),  a class of capital  stock of the Company which
has been established and designated in the Company's  Articles of Incorporation
and  Articles  Supplementary  to the  Articles  of  Incorporation,  as  amended
(collectively,  the "Articles"),  all as more fully described in the Prospectus
and  the  Statement  of  Additional  Information  contained  in  Post-Effective
Amendment No. 50 (the "Amendment") to the Registration  Statement (No. 2-49560)
on Form N-1A (the "Registration Statement") to be filed by the Company with the
Securities and Exchange Commission.

         We have examined the Articles, the By-Laws of the Company, as amended,
the  minutes of certain  meetings  of and  resolutions  adopted by the Board of
Directors  of  the  Company,   the   Prospectus  and  Statement  of  Additional
Information  contained in the Amendment and such other  documents,  records and
certificates as we deemed necessary for the purposes of this opinion.

         Based upon the foregoing,  and assuming that not more than 175,000,000
Shares of the USAA S&P 500 Index  Fund will be issued  and  outstanding  at any
time, we are of the opinion that the Shares will,  when sold in accordance with
the terms of the Prospectus  and Statement of Additional  Information in effect
at the time of the sale, be legally issued, fully paid and non-assessable.

         We also hereby  consent to the  reference to the firm in the Statement
of  Additional  Information  under the heading  "General  Information--Counsel"
which  forms a part of the  Amendment  and the  filing  of this  opinion  as an
exhibit to the Amendment.

                                    Very truly yours,

                                    /s/  GOODWIN, PROCTER & HOAR LLP
                                    -----------------------------------
                                    GOODWIN, PROCTER & HOAR  LLP
GPH/dmm
DOCSA\624826.1


                                   EXHIBIT 10
<PAGE>

                       CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby  consent to the  incorporation  by  reference in the  Prospectus  and
Statement of Additional  Information  constituting parts of this Post-Effective
Amendment No. 50 to the registration  statement on Form N-1A (the "Registration
Statement")  of our report dated  February 5, 1999,  relating to the  financial
statements and financial  highlights  appearing in the December 31, 1998 Annual
Report to  Shareholders  of USAA S&P 500 Index Fund,  which is  incorporated by
reference into the Registration Statement. We also consent to the references to
us under the heading  "Financial  Highlights"  in the  Prospectus and under the
heading "Independent Accountants" in the Statement of Additional Information.


/s/ PricewaterhouseCoopers LLP
- -----------------------------------------
PricewaterhouseCoopers LLP
Baltimore, Maryland
February 26, 1999

                                 EXHIBIT 16(f)
<PAGE>

                              Power of Attorney

         The  undersigned  Trustees and  officers,  as  indicated  respectively
below, of BT Investment Funds, BT Institutional Funds, BT Pyramid Mutual Funds,
and BT Advisor Funds (each, a "Trust") and, Cash Management Portfolio, Treasury
Money  Portfolio,  Tax  Free  Money  Portfolio,  NY Tax Free  Money  Portfolio,
International  Equity Portfolio,  Utility  Portfolio,  Short/Intermediate  U.S.
Government Securities Portfolio,  Equity 500 Index Portfolio,  Asset Management
Portfolio, Capital Appreciation Portfolio, Intermediate Tax Free Portfolio, and
BT Investment  Portfolios (each, a "Portfolio  Trust") each hereby  constitutes
and  appoints the  Secretary,  each  Assistant  Secretary  and each  authorized
signatory of each Trust and each Portfolio Trust, each of them with full powers
of substitution,  as his true and lawful  attorney-in-fact and agent to execute
in his  name  and on his  behalf  in any and all  capacities  the  Registration
Statements  on Form N-1A,  and any and all  amendments  thereto,  and all other
documents,  filed by a Trust or a  Portfolio  Trust  with  the  Securities  and
Exchange  Commission  (the "SEC") under the Investment  Company Act of 1940, as
amended,  and (as applicable)  the Securities Act of 1933, as amended,  and any
and all  instruments  which such  attorneys  and agents,  or any of them,  deem
necessary or  advisable  to enable the Trust or Portfolio  Trust to comply with
such  Acts,  the  rules,  regulations  and  requirements  of the  SEC,  and the
securities or Blue Sky laws of any state or other  jurisdiction and to file the
same, with all exhibits  thereto and other  documents in connection  therewith,
with the SEC and such other  jurisdictions,  and the  undersigned  each  hereby
ratifies  and  confirms  as his own act and  deed any and all  acts  that  such
attorneys  and agents,  or any of them,  shall do or cause to be done by virtue
hereof. Any one of such attorneys and agents has, and may exercise,  all of the
powers hereby  conferred.  The  undersigned  each hereby  revokes any Powers of
Attorney  previously  granted  with  respect  to any Trust or  Portfolio  Trust
concerning the filings and actions described herein.

         IN WITNESS WHEREOF,  each of the undersigned has hereunto set his hand
as of the 31st day of December, 1998.

SIGNATURES                             TITLE

/S/ JOHN Y. KEFFER                     President and Chief Executive Officer of
- ---------------------                  each Trust and Portfolio Trust
John Y. Keffer

/S/ JOSEPH A. FINELLI                  Treasurer (Principal Financial and
- ---------------------                  Accounting Officer) of each Trust and
Joseph A. Finelli                      Portfolio Trust

<TABLE> <S> <C>

 <ARTICLE> 6
<CIK> 0000102401
<NAME> USAA MUTUAL FUND, INC.
<SERIES>
   <NUMBER> 9
   <NAME> USAA S&P 500 INDEX FUND
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<INVESTMENTS-AT-COST>                                0
<INVESTMENTS-AT-VALUE>                       1,853,152
<RECEIVABLES>                                    6,007
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               1,859,159
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        3,304
<TOTAL-LIABILITIES>                              3,304
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     1,473,146
<SHARES-COMMON-STOCK>                           96,296
<SHARES-COMMON-PRIOR>                           41,590
<ACCUMULATED-NII-CURRENT>                          662
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          3,137
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       378,910
<NET-ASSETS>                                 1,855,855
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                    0
<OTHER-INCOME>                                  17,796
<EXPENSES-NET>                                 (1,186)
<NET-INVESTMENT-INCOME>                         16,610
<REALIZED-GAINS-CURRENT>                        10,739
<APPREC-INCREASE-CURRENT>                      281,497
<NET-CHANGE-FROM-OPS>                          308,846
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (16,008)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                         70,105
<NUMBER-OF-SHARES-REDEEMED>                   (16,046)
<SHARES-REINVESTED>                                647
<NET-CHANGE-IN-ASSETS>                       1,217,635
<ACCUMULATED-NII-PRIOR>                             60
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                0
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  1,186
<AVERAGE-NET-ASSETS>                         1,184,038
<PER-SHARE-NAV-BEGIN>                            15.16
<PER-SHARE-NII>                                   0.21
<PER-SHARE-GAIN-APPREC>                           4.11
<PER-SHARE-DIVIDEND>                              0.00
<PER-SHARE-DISTRIBUTIONS>                       (0.21)
<RETURNS-OF-CAPITAL>                              0.00
<PER-SHARE-NAV-END>                              19.27
<EXPENSE-RATIO>                                   0.18
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>


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