VANGUARD PENNSYLVANIA TAX FREE FUND
N-30D, 1996-07-30
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<PAGE>   1
                           A MESSAGE TO SHAREHOLDERS

FELLOW SHAREHOLDER:

The declining interest rate environment that prevailed for most of fiscal 1995
reversed course during the first six months of our current fiscal year.
Short-term tax-exempt yields, after falling through late February, stabilized
and then abruptly rose to end the six-month period slightly higher than where
they began. Long-term tax-exempt yields also moved lower at the outset of the
period, before creeping higher to end above their starting point. This overall
increase in interest rates resulted in lower prices for municipal bonds.

         During the past twelve months, the net asset values of our Insured
Longer-Term Portfolios were negatively impacted by rising rates, but each
Portfolio's income component more than compensated for any decrease in
principal. Our Money Market Portfolios all gave good accounts of themselves,
providing returns that fully reflect the current level of interest rates. The
table on page 3 of this Report provides detailed results for each of our State
Tax-Free Portfolios, including per share net asset values, dividend and capital
gains distributions, and total returns over the past six and twelve months, as
well as current yields. In summary form, here are the Portfolio highlights:

THE STATE MONEY MARKET PORTFOLIOS--provided total returns ranging from +3.4% to
+3.6% for the past year. As expected, net asset values remained at $1.00 per
share. As the following table illustrates, current yields are in the area of
3.4%, moderately lower than they were twelve months ago:

<TABLE>
<CAPTION>
- ---------------------------------------------------------
                                  SEVEN-DAY
                              ANNUALIZED YIELD         
                    -------------------------------------
MONEY MARKET        MAY 31,       NOV. 30,        MAY 31,
PORTFOLIO            1996           1995            1995
- ---------------------------------------------------------
<S>                  <C>            <C>            <C>
CALIFORNIA           3.39%          3.61%          3.80%
PENNSYLVANIA         3.44           3.64           3.80
NEW JERSEY           3.30           3.57           3.71
OHIO                 3.43           3.71           3.92
- ---------------------------------------------------------
</TABLE>

THE STATE INSURED LONGER-TERM PORTFOLIOS--earned sufficient income to offset
the modest decrease in long-term municipal bond prices, providing total returns
(capital change plus reinvested dividends) ranging from +3.4% to +5.0% for the
twelve months. Despite the swings in interest rates during the period, the
current yields on the Insured Longer-Term Portfolios (roughly 5.2%) are nearly
identical to their levels of twelve months ago.

         To provide some perspective on how our Insured Longer-Term Portfolios
performed during the past year, the table below breaks out the two components
of total return--income return and capital return. As you can see, the positive
contribution of each Portfolio's income return was marginally reduced by its
negative capital return.

<TABLE>
<CAPTION>
- -------------------------------------------------------
                             INVESTMENT RETURNS        
                    -----------------------------------
                             TWELVE MONTHS ENDED       
                                MAY 31, 1996           
                    -----------------------------------
INSURED LONGER-TERM
PORTFOLIO           INCOME         CAPITAL        TOTAL
- -------------------------------------------------------
<S>                  <C>            <C>            <C>
CALIFORNIA
 INTERMEDIATE-TERM   +5.1%          -0.1%          +5.0%
CALIFORNIA LONG-TERM +5.5           -1.7           +3.8
NEW YORK             +5.4           -1.6           +3.8
PENNSYLVANIA         +5.6           -1.3           +4.3
NEW JERSEY           +5.3           -1.9           +3.4
OHIO                 +5.4           -1.6           +3.8
FLORIDA              +5.2           -1.4           +3.8
- -------------------------------------------------------
</TABLE>

FIXED-INCOME MARKET REVIEW

Although the Federal Reserve lowered short-term interest rates in December and
January, the bond market fretted over the apparent strength of the U.S. economy
and the possibility of an increase in inflation. During the past six months,
the yield on the long-term U.S. Treasury bond, the benchmark for the bond
market, rose from 6.1% to 6.9%, engendering a price decline of approximately
- -10% (excluding interest income).

         The long-term municipal bond market fared much better. On balance for
the six-month period, yields on high-grade municipal bonds increased less
dramatically (5.5% to 5.9%), resulting in a price


                                      1
<PAGE>   2
decline of only -6%. Yields on top-grade (MIG 1) short-term municipal notes
remained essentially unchanged on balance at 3.7%.

         Although the future direction of interest rate movements is virtually
impossible to predict with any level of accuracy and consistency, the relative
performance of bond funds with comparable quality and maturity guidelines is
surprisingly predictable.  That is to say, bond funds holding similar types of
securities--say, high-quality, long-term municipal bonds--should, on average,
earn roughly equivalent gross returns. What that absolute return will be,
however, is anyone's guess. On the other hand, what can be predicted with some
semblance of accuracy is the relative performance differential due to the
expense ratios of the funds. The average Vanguard Insured Longer-Term
Portfolio, for example, operates with an annual expense ratio of 0.2%, compared
to 0.9% for our average competitor. Therefore, holding all other factors equal,
a typical Vanguard Insured Longer-Term Portfolio begins each year with an
income advantage of +0.7% over a comparable municipal bond fund.

IN SUMMARY

As you may know, one of the benefits of Vanguard's State Insured Longer-Term
Portfolios is their reliance on insured municipal bonds, in which the timely
payment of principal and interest is guaranteed by a private insurer. Such
insurance provides protection against the possibility of deteriorating
creditworthiness, but not against fluctuations in principal value based on
changes in interest rates.

         There are, of course, "costs" associated with insuring our Portfolios
against potential default. First, bonds that are issued with insurance
typically offer slightly lower yields than non-insured bonds. A second cost is
the explicit expense of purchasing insurance on non-insured bonds. Despite
these costs, however, our top-quality Portfolios continue to benefit from our
expense ratio advantage and provide yields that are fully competitive with
those of uninsured municipal bond portfolios.

         Over time, given our high-quality, low-cost advantage, Vanguard State
Tax-Free Portfolios should remain attractive relative to our competitors'
funds. We look forward to reporting to you in further detail in our 1996 Annual
Report six months hence.

Sincerely,


/s/ John C. Bogle
- -----------------
John C. Bogle
Chairman of the Board



/s/ John J. Brennan
- -------------------
John J. Brennan
President

June 8, 1996

Note: Mutual fund data from Lipper Analytical Services, Inc.





                                       2
<PAGE>   3
                              PORTFOLIO STATISTICS

<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------------------------------
                                                            NET ASSET VALUE          INCOME
                           TOTAL                               PER SHARE           DIVIDENDS           TOTAL RETURN  
                      NET ASSETS                           -----------------    -----------------    ----------------
                      (MILLIONS)       AVERAGE   AVERAGE   NOV. 30,  MAY 31,     SIX       TWELVE     SIX      TWELVE   CURRENT
PORTFOLIO           MAY 31, 1996      MATURITY  QUALITY*     1995      1996     MONTHS     MONTHS    MONTHS    MONTHS   YIELD**
- -------------------------------------------------------------------------------------------------------------------------------
<S>                       <C>       <C>           <C>      <C>       <C>        <C>        <C>       <C>       <C>        <C>
MONEY MARKET
 CALIFORNIA   . . . . .   $1,276       42 DAYS    MIG 1    $ 1.00    $ 1.00     $.017      $.034      +1.7%     +3.5%     3.39%
 PENNSYLVANIA   . . . .    1,306       32 DAYS    MIG 1      1.00      1.00      .017       .035      +1.7      +3.5      3.44
 NEW JERSEY   . . . . .      888       57 DAYS    MIG 1      1.00      1.00      .016       .033      +1.6      +3.4      3.30
 OHIO   . . . . . . . .      199       60 DAYS    MIG 1      1.00      1.00      .017       .035      +1.7      +3.6      3.43
- ------------------------------------------------------------------------------------------------------------------------------
INSURED INTERMEDIATE-TERM
 CALIFORNIA   . . . . .   $  264     7.4 YEARS      Aaa    $10.44    $10.25     $.254      $.512      +0.6%     +5.0%     4.77%
INSURED LONG-TERM
 CALIFORNIA   . . . . .      978    14.1 YEARS      Aaa     11.27     10.87      .299       .600      -0.9      +3.8      5.33
 NEW YORK   . . . . . .      879    11.7 YEARS      Aaa     11.01     10.57      .286       .574      -0.8+     +3.8+     5.23
 PENNSYLVANIA   . . . .    1,565    11.4 YEARS      Aaa     11.28     10.90      .304       .608      -0.4+     +4.3+     5.28
 NEW JERSEY   . . . . .      796    11.9 YEARS      Aaa     11.78     11.29      .310       .617      -1.1+     +3.4+     5.23
 OHIO   . . . . . . . .      203    10.9 YEARS      Aaa     11.63     11.25      .302       .605      -0.7      +3.8      5.29
 FLORIDA  . . . . . . .      453    14.2 YEARS      Aaa     10.94     10.60      .275       .554      -0.6      +3.8      5.22
- ------------------------------------------------------------------------------------------------------------------------------
</TABLE>

 *MIG 1 and Aaa are Moody's highest ratings for short-term and long-term
  municipal bonds, respectively.

**Money Market Portfolios' yields are 7-day annualized yields; others are
  30-day SEC yields.

 +Includes capital gains distributions of $.065 for New York, $.037 for
  Pennsylvania, and $.058 for New Jersey.

  Note: The shares of each of the Vanguard "single-state" Portfolios are
  available for purchase solely by residents of the designated states.





                                       3
<PAGE>   4
                          AVERAGE ANNUAL TOTAL RETURNS

THE CURRENT YIELDS QUOTED IN THE MESSAGE TO SHAREHOLDERS ARE CALCULATED IN
ACCORDANCE WITH SEC GUIDELINES. THE AVERAGE ANNUAL TOTAL RETURNS FOR THE
PORTFOLIOS (PERIODS ENDED MARCH 31, 1996) ARE AS FOLLOWS:

<TABLE>
<CAPTION>
                                                                                            SINCE INCEPTION       
                                                                                   ----------------------------------
                                      INCEPTION                                    TOTAL         INCOME       CAPITAL
                                         DATE         1 YEAR       5 YEARS         RETURN        RETURN        RETURN
                                      ---------       ------       -------         ------        ------        ------
<S>                                   <C>             <C>           <C>            <C>           <C>           <C>
CALIFORNIA INSURED INTERMEDIATE-TERM   3/4/94         +7.60%          --           +6.56%        +5.08%        +1.48%
CALIFORNIA INSURED LONG-TERM           4/7/86         +7.73         +8.17%         +7.75         +6.47         +1.28
CALIFORNIA MONEY MARKET                6/1/87         +3.57         +3.12          +4.11         +4.11          0.00
NEW YORK INSURED TAX-FREE              4/7/86         +7.50         +8.37          +7.32         +6.44         +0.88
PENNSYLVANIA INSURED LONG-TERM         4/7/86         +7.15         +8.41          +7.95         +6.64         +1.31
PENNSYLVANIA MONEY MARKET             6/13/88         +3.62         +3.12          +4.11         +4.11          0.00
NEW JERSEY INSURED LONG-TERM           2/3/88         +7.13         +8.10          +8.39         +6.43         +1.96
NEW JERSEY MONEY MARKET                2/3/88         +3.50         +3.08          +4.09         +4.09          0.00
OHIO INSURED LONG-TERM                6/18/90         +7.13         +8.08          +8.50         +5.97         +2.53
OHIO MONEY MARKET                     6/18/90         +3.72         +3.17          +3.49         +3.49          0.00
FLORIDA INSURED TAX-FREE               9/1/92         +7.50           --           +7.62         +5.43         +2.19
</TABLE>

ALL OF THESE DATA REPRESENT PAST PERFORMANCE. THE INVESTMENT RETURN AND
PRINCIPAL VALUE OF AN INVESTMENT WILL FLUCTUATE SO THAT INVESTORS' SHARES, WHEN
REDEEMED, MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.

PLEASE NOTE THAT AN INVESTMENT IN A MONEY MARKET FUND, SUCH AS THE MONEY MARKET
PORTFOLIOS OF VANGUARD STATE TAX-FREE FUNDS, IS NEITHER INSURED NOR GUARANTEED
BY THE U.S. GOVERNMENT, AND THERE IS NO ASSURANCE THAT THE FUND WILL BE ABLE TO
MAINTAIN A STABLE NET ASSET VALUE OF $1.00 PER SHARE.





                                       4
<PAGE>   5
                       REPORT FROM THE INVESTMENT ADVISER

The two major factors affecting the Longer-Term Insured Portfolios over the
last six months were the sharp rise in interest rates and the relatively better
performance of municipal bonds versus their taxable counterparts. The yield on
the 30-year U.S. Treasury bond increased 0.8 percentage points (from 6.1% to
6.9%). This was a decidedly unpleasant turn of events for bondholders and their
total returns. The increase in interest rates was prompted by signs of an
improving economy and investor concerns about inflation.  During the same
period, the yield on high-grade, long-term municipal bonds rose 0.4 percentage
points (from 5.5% to 5.9%). The question of tax reform first raised by Senator
Armey (R-TX) and later championed by Steve Forbes in the Republican
Presidential primaries seemed to have been, at least in part, answered. The
reduced intensity of the rhetoric around the question of tax reform was a
contributing factor in explaining why the municipal market performed better
than the Treasury market.

         The Federal Reserve Board's last action on January 31, 1996, was to
reduce the Federal funds rate and the discount rate by 0.25 percentage points.
At that time, the economy appeared to be struggling, a situation further
exacerbated by the severity of the winter. Unfortunately for bond investors,
the release of February's economic statistics showed a much stronger than
anticipated economy. Concurrently, an increase in the prices of oil, gasoline,
wheat, and corn prodded some investors to become concerned about the specter of
higher inflation. The combined effects caused the yield on the 30-year U.S.
Treasury bond to increase sharply. The beginning of the Presidential primary
season added an extra degree of uncertainty to the market.

         While bear markets are never pleasant, they often offer market
opportunities that can be exploited to the shareholders' benefit. First, the
Portfolios' dividend distribution can be positively impacted by swapping bonds
with lower yields to maturity for bonds with higher yields to maturity. Second,
capital gains distributions can usually be reduced by realizing offsetting
capital losses. Finally, bear markets are generally the best time to buy bonds
that have superior protection from early redemption. As interest rates rise,
bonds which are noncallable or have long periods before they are callable are
often available at close to the same price as bonds with less desirable
characteristics. When the time comes for interest rates to reverse course and
fall, these bonds will furnish excellent capital returns while providing a more
stable dividend.

         The past six months have been a very volatile period of time. The
future remains unknown, but the State Insured Longer-Term Portfolios will
continue to focus on their objectives. It is through this commitment to
high-quality Federal and state tax-exempt municipal bonds and low-cost, prudent
management that superior and durable investment results can be achieved.

MONEY MARKETS

The volatility experienced in the Treasury market over the past six months has
had little impact on yields in the short-term municipal bond market. Yields on
one-year municipal notes ended the period very close to where they began,
despite a 0.3% rise in yields on one-year Treasury bills. Nevertheless, there
were two issues which had a substantial impact on the short-term market.
First, seasonal supply constraints that typically plague the short-term
municipal market in the spring dampened the average weighted maturities of
money market funds. Second, and most notably, the Securities and Exchange
Commission (SEC) announced changes in the regulations governing money market
funds which became effective June 3, 1996.

         In April, the SEC adopted amendments to rule 2a-7 under the Investment
Company Act of 1940. Section 2a-7 contains regulations that protect the quality
and safety of money market funds. For the most part, the changes emphasize
higher quality and increased diversification. The new guidelines were designed
to tighten the regulations imposed on tax-exempt money market funds and improve
the likelihood that the funds maintain a stable net asset value. Compliance
with the amendments may prove challenging for the industry. Many of our
competitors operate under somewhat lower quality standards and, as a result,
may be forced to significantly restructure their funds in order to meet the
standards.

                                                                     (continued)





                                       5
<PAGE>   6
In contrast, our Money Market Portfolios have always been managed quite
conservatively with credit quality our most important consideration.
Consequently, we expect the impact of the changes on Vanguard's State Tax-Free
Money Market Portfolios to be minimal.

         The scarcity of new issue supply in the short-term municipal market
contributed to the relative stability in yields over the period. The supply of
short-term municipals tends to be quite seasonal, the timing of which depends
upon an issuer's fiscal year. The vast majority of issuers have fiscal years
beginning July 1 and ending June 30, causing new issue supply to decline in the
months leading up to June and increase dramatically in July. This annual event
makes it quite difficult for funds to maneuver their average weighted
maturities and, as a result, average maturities for Vanguard and the industry
drifted lower over the last fiscal period.

         Over the last several years, all Pennsylvania money market fund
managers have had to cope with a generalized deterioration in the average
credit quality of Pennsylvania issuers and an associated shortfall in the
number of attractive and creditworthy issuers. Consequently, they have required
that a large percentage of Pennsylvania short-term municipal issuance be
enhanced by letters of credit (LOC). A letter of credit typically is an
unconditional contractual arrangement, whereby a bank guarantees the debt of an
issuer of tax-exempt bonds for a fixed period of time in exchange for an annual
fee. Two institutions, PNC Bank and Morgan Guaranty Bank, have aggressively
pursued new issue business and secured strongholds over most of the
Pennsylvania issues.  Unfortunately, at the same time, PNC Bank's credit
quality ratings have deteriorated. In order to recognize these changing credit
conditions and, not coincidentally, improve our safety and diversification, the
Portfolio has decided to purchase securities subject to alternative minimum tax
(AMT). The benefits of purchasing AMT securities are several. We can buy AMT
issues guaranteed by LOCs from Aaa- or Aa-rated banks, a noteworthy improvement
over the status quo. We estimate that only a very small percentage (i.e., less
than 10%) of shareholders will be subject to the AMT. The overwhelming majority
of our shareholders, however, will benefit by our increasing the Portfolio's
diversification and quality, and to a lesser extent, an improved yield.

         In conclusion, the months ahead should be challenging for the
industry, with tighter regulations governing tax-free money market funds coming
at a time when short-term issuance is at its peak. Hopefully, the new
amendments adopted by the SEC will "level the playing field," bringing
competitors closer to Vanguard's already conservative style of management,
thereby further enhancing the performance advantage that arises from our "rock
bottom" expense ratios.

Sincerely,

Ian A. MacKinnon           David E. Hamlin
Senior Vice President      Principal

Pamela W. Tynan            Danine A. Mueller
Principal                  Principal

Reid O. Smith              Jerome J. Jacobs
Principal                  Principal

Vanguard Fixed Income Group

June 18, 1996





                                       6
<PAGE>   7
                            STATEMENT OF NET ASSETS

                                                FINANCIAL STATEMENTS (unaudited)
                                                                    May 31, 1996


<TABLE>
<CAPTION>
                                                             Face         Market
INSURED                                                    Amount          Value
LONG-TERM PORTFOLIO                                         (000)         (000)+
- --------------------------------------------------------------------------------
<S>                                                      <C>           <C>
MUNICIPAL BONDS (102.4%)                                                        
- --------------------------------------------------------------------------------
ISSUER INSURED (93.2%)
  Allegheny County PA GO
    0.00%, 5/1/03 (2)                                    $ 12,315      $   8,658
    6.00%, 5/1/10 (2)                                       3,030          3,101
    6.00%, 5/1/12 (2)                                       3,000          3,049
  Allegheny County PA Hosp.
    Development Auth.
    (Magee Women's Hosp.)
    6.00%, 10/1/10 (3)                                      4,235          4,409
    (Mercy Hosp.)
    6.75%, 4/1/21 (2)                                       4,500          4,777
    (Presbyterian Univ. Health)
    6.00%, 11/1/12 (1)                                      3,000          3,020
    7.125%, 7/1/99 (1) (Prere.)                             6,835          7,463
    7.60%, 3/1/08 (1)                                       5,000          5,389
  Allegheny County PA Port Auth.
    4.50%, 3/1/98 (2)                                       6,000          6,035
  Allegheny County PA
    Sanitation Auth.
    5.50%, 12/1/13 (3)                                     20,295         19,610
    5.50%, 12/1/16 (3)                                     23,665         22,386
    6.25%, 12/1/14 (1)                                      9,660          9,937
    6.50%, 12/1/11 (3)                                      8,000          8,318
  Altoona City PA Auth.
    6.50%, 11/1/19 (3)                                     20,000         20,891
  Beaver County PA IDA
    (Ohio Edison)
    7.00%, 6/1/21 (3)                                      22,715         24,721
    7.10%, 6/1/18 (3)                                       5,000          5,396
  Berks County PA GO
    0.00%, 11/15/13 (3)                                     7,250          2,605
    0.00%, 11/15/14 (3)                                     8,615          2,893
    0.00%, 11/15/15 (3)                                     6,250          1,960
    5.75%, 11/15/12 (3)                                    15,500         15,483
  Berks County PA Hosp. Rev.
    (Reading Hosp.)
    5.70%, 10/1/14 (1)                                      4,500          4,405
    6.10%, 10/1/23 (1)                                     16,500         16,549
  Blair County PA Hosp. Auth.
    (Altoona Hosp.)
    6.50%, 7/1/22 (2)                                       8,500          8,813
  Boyertown PA Area School Dist.
    6.10%, 3/1/15 (2)                                       6,000          6,027
  Butler County PA GO
    6.00%, 7/15/12 (3)                                      5,185          5,248
  Center City Philadelphia PA
    Business Improvement
    5.50%, 12/1/15 (2)                                      6,955          6,651
  Center Township PA Sewer Auth.
    5.50%, 4/15/11 (2)                                      2,375          2,339
  Central Dauphin County PA
    School Dist. GO
    0.00%, 6/1/04 (2)                                       4,800          3,168
  Central Greene PA School Dist.
    6.50%, 2/15/24 (1)                                      5,500          6,026
  Chester County PA Hosp. Auth.
    (Chester County Hosp.)
    7.00%, 7/1/16 (1)                                      11,000         11,023
  Cornwall Lebanon PA Suburban
    Joint School Dist.
    5.875%, 3/1/14 (3)                                      5,635          5,552
    5.90%, 3/1/11 (3)                                       3,270          3,323
  Corry PA Area School Dist. GO
    5.50%, 12/15/10 (1)                                     4,600          4,555
  Dauphin County PA General Auth.
    (West Pennsylvania Hosp.)
    5.50%, 7/1/13 (1)                                       5,000          4,730
  Dauphin County PA Hosp. Auth.
    (Harrisburg Hosp.)
    8.125%, 7/1/07 (1)                                      3,000          3,170
  Delaware County PA Auth.
    College Rev.
    (Haverford College)
    5.40%, 11/15/13 (1)                                     1,750          1,669
  Delaware County PA Hosp. Auth.
    (Crozer Chester Medical Center)
    5.30%, 12/15/11 (1)                                     4,660          4,359
    (Delaware County Memorial Hosp.)
    4.00%, 8/15/96 (5)                                      1,180          1,181
    5.50%, 8/15/13 (5)                                     12,000         11,497
    5.50%, 8/15/19 (5)                                      4,000          3,746
    7.125%, 8/15/09 (1)                                     5,160          5,648
    7.20%, 8/15/99 (1) (Prere.)                             8,000          8,774
  Delaware River Joint Toll
    Bridge Comm. PA
    6.00%, 7/1/18 (3)                                       3,040          3,032
  Delaware River Port Auth. PA
    5.50%, 1/1/26 (3)                                      21,450         20,113
    6.50%, 1/1/09 (2)                                       4,500          4,607
    7.375%, 1/1/07 (2)                                     13,500         14,522
  Erie County PA Hosp. Auth.
    (St. Vincent Health Care)
    6.125%, 7/1/13 (1)                                      3,900          3,983
  Fort LeBoeuf  PA School Dist. GO
    5.80%, 1/1/13 (1)                                       5,500          5,496
</TABLE>





                                       7
<PAGE>   8
                      STATEMENT OF NET ASSETS (continued)

<TABLE>
<CAPTION>
                                                             Face         Market
INSURED LONG-TERM                                          Amount          Value
PORTFOLIO (continued)                                       (000)         (000)+
- --------------------------------------------------------------------------------
  <S>                                                    <C>           <C>
  Garnet Valley PA School Dist. GO
    5.70%, 4/1/11 (2)                                    $  3,000      $   3,007
  Greensburg Salem PA School
    Dist. GO
    6.45%, 9/15/18 (1)                                      7,500          7,721
  Haverford Township PA School Dist.
    6.25%, 6/1/04 (3) (Prere.)                             11,500         12,391
  Hazleton PA Area School Dist.
    5.75%, 3/1/13 (3)                                      11,875         11,798
  Lancaster PA Higher
    Education Auth.
    (Franklin & Marshall College)
    6.60%, 4/15/10 (1)                                      4,940          5,237
    6.70%, 4/15/12 (1)                                      4,000          4,230
  Lehigh County PA GO
    5.625%, 7/1/25 (1)                                     17,500         16,464
    5.70%, 7/1/10 (1)                                       3,905          3,894
    6.00%, 10/15/99 (2) (Prere.)                            1,000          1,045
    7.00%, 7/1/16 (1)                                       4,415          5,108
  Lewisburg PA Area School Dist. GO
    6.20%, 6/1/12 (1)                                       3,500          3,740
    6.25%, 6/1/15 (1)                                       3,685          3,947
  Ligonier Valley PA School Dist. GO
    6.00%, 3/1/19 (1)                                       6,000          5,948
  Lycoming County PA College
    Auth. GO
    5.40%, 11/1/08 (2)                                      6,000          5,940
  Lycoming County PA Hosp. Auth.
    (Williamsport Hosp.)
    5.25%, 11/15/15 (7)                                    15,525         14,198
    5.375%, 11/15/10 (7)                                    9,820          9,214
    6.875%, 11/1/96 (2) (Prere.)                            4,450          4,596
    7.00%, 11/1/96 (2) (Prere.)                             3,000          3,100
  Manheim PA Central School
    Dist. GO
    6.85%, 3/1/08 (3)                                       2,705          2,909
  Mars PA Area School Dist. GO
    6.25%, 9/1/19 (3)                                       4,000          4,317
  Montgomery County PA Higher
    Education & Health Auth.
    (Abington Memorial Hosp.)
    6.00%, 6/1/22 (2)                                      10,160          9,976
    6.10%, 6/1/12 (2)                                       5,000          5,090
  Montgomery County PA IDA PCR
    (PECO)
    6.70%, 12/1/21 (1)                                     12,000         12,769
  Mount Lebanon PA Hosp.
    Development Auth.
    (St. Clair Memorial Hosp.)
    6.25%, 7/1/06 (3)                                       9,250          9,937
  Nazareth PA School Dist.
    5.50%, 11/15/15 (2)                                     1,500          1,450
  Neshaminy PA School Dist. GO
    6.30%, 2/15/13 (3)                                     10,000         10,309
  North Penn PA Water Auth.
    5.75%, 11/1/24 (3)                                     19,460         18,773
    6.125%, 11/1/10 (3)                                     5,140          5,302
  North Wales PA Water Auth.
    (Montgomery County)
    5.25%, 11/1/19 (3)                                     12,350         11,265
    6.125%, 11/1/12 (3)                                     3,000          3,053
    6.125%, 11/1/22 (3)                                     8,300          8,358
    6.25%, 11/1/14 (3)                                      2,300          2,356
  Northampton County PA Higher
    Education Auth.
    (Lehigh Univ.)
    7.10%, 11/15/09 (1)                                     7,035          7,626
  Northampton County PA
    Hosp. Auth.
    (Easton Hosp.)
    6.25%, 1/1/19 (1)                                      10,000         10,132
    7.875%, 1/1/19 (6)                                        285            310
  Northampton County PA IDA PCR
    (Central Metro Edison)
    6.10%, 7/15/21 (1)                                      4,410          4,417
  Northumberland County PA
    Commonwealth Lease
    6.25%, 10/15/01 (1) (Prere.)                           13,600         14,100
  Penn Hills PA GO
    5.80%, 12/1/13 (2)                                     11,735         12,354
  Penn Trafford PA School Dist. GO
    5.85%, 5/1/14 (1)                                       2,435          2,403
  Pennsylvania Convention
    Center Auth.
    0.00%, 9/1/04 (3)                                       5,000          3,258
    6.00%, 9/1/19 (3)                                      12,600         13,102
    6.70%, 9/1/16 (3)                                      19,150         21,665
  Pennsylvania GO
    5.00%, 11/15/97 (2)                                     9,075          9,231
    5.25%, 5/15/98 (3)                                      8,200          8,371
    5.375%, 5/15/10 (3)++                                  13,800         13,463
    5.375%, 5/15/12 (3)++                                  16,570         15,976
</TABLE>





                                       8
<PAGE>   9


<TABLE>
<CAPTION>
                                                             Face         Market
                                                           Amount          Value
                                                            (000)         (000)+
- --------------------------------------------------------------------------------
  <S>                                                    <C>           <C>
  Pennsylvania Higher
    Education Auth.
    (Allegheny Delaware Valley)
    5.875%, 11/15/16 (1)++                               $ 20,000      $  19,775
    (College and Univ. Rev.)
    7.20%, 1/1/04 (2)                                       2,500          2,519
    (Drexel Univ.)
    5.625%, 5/1/14 (1)                                     11,755         11,387
    (State System)
    5.375%, 6/15/18 (2)                                     8,845          8,133
    (Temple Univ.)
    6.50%, 4/1/21 (1)                                       6,000          6,216
  Pennsylvania Intergovernment
    Cooperation Auth.
    5.00%, 6/15/98 (3)                                     21,000         21,308
    5.40%, 6/15/09 (3)                                      2,700          2,643
    5.50%, 6/15/10 (3)                                      3,700          3,633
    5.625%, 6/15/13 (3)                                     2,605          2,545
    5.625%, 6/15/23 (1)                                    27,500         26,058
    6.75%, 6/15/21 (3)                                     23,050         25,794
    7.00%, 6/15/14 (3)                                      2,250          2,556
  Pennsylvania Turnpike Comm.
    5.50%, 12/1/17 (3)                                     29,000         27,195
    5.75%, 12/1/12 (2)                                     10,000          9,989
    6.00%, 6/1/15 (1)                                      28,800         28,735
    6.25%, 6/1/11 (2)                                      14,390         14,926
  Pennsylvania Turnpike Comm.
    Oil Franchise Tax Rev.
    6.00%, 12/1/19 (2)                                      7,450          7,385
  Philadelphia PA Airport Rev.
    9.875%, 6/15/06 (1)                                     2,215          2,225
  Philadelphia PA Gas Works
    6.00%, 5/15/12 (2)                                     14,250         14,420
    6.75%, 1/1/15 (2)                                      13,930         14,640
    7.25%, 1/1/10 (2)                                      10,085         10,818
  Philadelphia PA GO
    6.00%, 11/15/10 (3)                                     2,810          2,889
    6.00%, 11/15/11 (3)                                     3,025          3,112
    6.00%, 11/15/12 (3)                                     3,355          3,394
    6.00%, 11/15/13 (3)                                     1,885          1,905
  Philadelphia PA Municipal
    Auth. Rev.
    5.55%, 11/15/08 (3)                                     3,040          3,048
    5.60%, 11/15/09 (3)                                     2,100          2,101
    5.60%, 11/15/10 (3)                                     6,755          6,715
    5.625%, 11/15/18 (3)                                    8,750          8,358
    7.10%, 11/15/05 (1)                                     3,000          3,316
  Philadelphia PA Parking Auth. Rev.
    7.375%, 9/1/18 (2)                                     12,065         12,976
  Philadelphia PA School Dist. GO
    0.00%, 7/1/01 (2)                                      11,750          9,210
    5.50%, 9/1/15 (2)                                       5,000          4,788
    5.50%, 9/1/18 (2)                                       4,000          3,756
    5.85%, 7/1/09 (1)                                       1,500          1,529
  Philadelphia PA Water & Waste
    Water Rev.
    5.50%, 8/1/14 (1)                                      12,900         12,426
    5.60%, 8/1/18 (1)                                       5,920          5,631
    6.25%, 8/1/11 (1)                                       3,750          3,985
    7.00%, 6/15/10 (3)                                     33,865         38,431
    7.00%, 6/15/11 (3)                                     35,685         40,522
  Pittsburgh PA GO
    5.20%, 9/1/06 (2)                                       1,175          1,167
    5.30%, 9/1/07 (2)                                       1,000            994
    5.50%, 9/1/14 (2)                                       9,500          9,181
    6.25%, 9/1/16 (1)                                      11,030         11,182
    7.00%, 3/1/06 (3)                                      18,265         18,937
    7.00%, 3/1/07 (3)                                       2,135          2,214
  Pittsburgh PA Public Parking Auth.
    5.875%, 12/1/12 (3)                                     8,200          8,268
  Pittsburgh PA Water &
    Sewer System
    7.25%, 9/1/14 (3) (ETM)                                25,210         28,330
    7.625%, 9/1/04 (3) (ETM)                                5,370          6,132
  Pocono Mountain PA School
    Dist. GO
    5.75%, 10/1/09 (2)                                      6,000          6,065
  Reading PA GO (Berks County)
    5.875%, 11/15/12 (2)                                   18,000         18,119
  St. Mary's Hosp. Auth.
    Langhorne PA
    (Franciscan Health System)
    7.00%, 7/1/09 (6)                                       1,000          1,073
    7.00%, 7/1/13 (6)                                       5,050          5,410
    7.00%, 6/15/15 (6)                                      1,770          1,896
  Sayre PA Health Care Facilities Auth.
    (Pooled Capital Asset
    Financing Program)
    VRDO 3.50%, 6/5/96 (2)                                 36,375         36,375
    (Guthrie Health Care System)
    7.00%, 3/1/11 (2)                                       2,000          2,178
  Seneca PA Valley School Dist. GO
    5.50%, 7/1/14 (3)                                       9,965          9,589
    5.75%, 7/1/10 (3)                                       4,000          4,030
  Souderton PA Area School Dist. GO
    7.00%, 9/1/12 (2)                                       2,200          2,306
</TABLE>





                                       9
<PAGE>   10
                      STATEMENT OF NET ASSETS (continued)

<TABLE>
<CAPTION>
                                                             Face         Market
INSURED LONG-TERM                                          Amount          Value
PORTFOLIO (continued)                                       (000)         (000)+
- --------------------------------------------------------------------------------
<S>                                                      <C>           <C>
  South Fork PA Hosp. Auth.
    (Conemaugh Valley Hosp.)
    5.625%, 7/1/10 (7)                                   $  2,300      $   2,305
    5.75%, 7/1/18 (7)                                       7,000          6,746
  Spring-Ford PA Area School
    Dist. GO
    6.50%, 2/1/18 (2)                                       8,260          8,647
  Univ. of Pittsburgh PA
    6.125%, 6/1/21 (1)                                     36,010         36,315
    6.25%, 6/1/12 (1)                                       4,250          4,412
  Washington County PA Hosp. Auth.
    (Shadyside Hosp.)
    5.875%, 12/15/09 (2)                                   22,000         22,435
    (Washington Hosp.)
    6.75%, 7/1/12 (2)                                      10,000         10,634
  Wayne County PA Hosp. &
    Health Facility
    7.125%, 7/1/96 (1) (Prere.)                             1,500          1,504
  West Allegheny PA School Dist.
    6.25%, 2/1/14 (2)                                       6,155          6,296
  West Jefferson Hills PA School
    Dist. GO
    5.90%, 8/1/10 (3)                                       3,160          3,201
    5.95%, 8/1/14 (3)                                       7,180          7,062
  West Mifflin PA School Dist. GO
    5.35%, 2/15/09 (3)                                      1,555          1,519
    5.625%, 2/15/15 (3)                                     7,000          6,845
  Westmoreland County PA Auth.
    6.125%, 7/1/17 (1) (ETM)                                8,205          8,426
  York County PA Southwestern
    School Dist. GO
    6.40%, 6/15/12 (3)                                      3,825          4,185
                                                                       ---------
        GROUP TOTAL                                                    1,459,127
                                                                       ---------
- --------------------------------------------------------------------------------
PORTFOLIO INSURED (.9%)
  Allegheny County PA Hosp.
    Development Auth.
    (Mercy Hosp.)
    7.375%, 4/1/15                                          3,650          3,715
    (St. Margaret's Hosp.)
    9.80%, 7/1/10                                           1,500          1,535
  Pennsylvania Hosp. & Higher
    Education Facilities Auth.
    (Pennsylvania Hosp.)
    7.25%, 7/1/14                                           8,535          8,575
                                                                       ---------
        GROUP TOTAL                                                       13,825
                                                                       ---------
- --------------------------------------------------------------------------------
SECONDARY MARKET INSURED (.1%)
  Allegheny County PA Hosp.
    Development Auth.
    (Mercy Hosp.)
    7.375%, 4/1/15 (1)                                      1,350          1,380
                                                                       ---------
- --------------------------------------------------------------------------------
NON-INSURED (8.2%)
  Allegheny County PA Hosp.
    Development Auth. VRDO
    (Allegheny General Hosp.)
    3.60%, 6/5/96 LOC                                       2,100          2,100
    (Presbyterian Univ. Health)
    3.75%, 6/6/96                                           1,800          1,800
    (South Hills Health System)
    3.55%, 6/5/96 LOC                                       2,100          2,100
  Geisinger Health System Auth. of PA
    (Montour County)
    VRDO 3.65%, 6/4/96                                      5,400          5,400
  Montgomery  County PA Higher
    Education & Health Auth.
    (Bryn Mawr Hosp. Project)
    9.375%, 12/1/97 (Prere.)                                5,000          5,485
  Pennsylvania GO
    4.75%, 6/15/97                                          1,750          1,768
  Pennsylvania Higher Education
    Facilities Auth.
    (Carnegie Mellon Univ.)
    VRDO 3.75%, 6/4/96                                     29,500         29,500
    (Temple Univ.)
    VRDO 3.65%, 6/4/96 LOC                                  1,300          1,300
    (University of Pennsylvania)
    VRDO 3.60%, 6/5/96                                     15,000         15,000
    5.75%, 1/1/22                                          12,415         11,871
  Pennsylvania Housing Single Family
    Mortgage Finance Agency
    6.90%, 4/1/17                                           7,500          7,826
    7.55%, 4/1/16                                           9,670         10,299
  Philadelphia PA Hosp. & Higher
    Education Facility Auth.
    (Children's Hosp.)
    VRDO 3.65%, 6/4/96                                     19,150         19,150
    7.00%, 7/1/97 (Prere.)                                  1,870          1,933
  Philadelphia PA IDA VRDO
    (Franklin Institute)
    3.80%, 6/6/96 LOC                                       6,700          6,700
  Philadelphia PA School
    District TRAN
    4.50%, 6/28/96                                          4,000          4,002
  Swarthmore Borough PA Auth.
    College Rev.
    7.375%, 9/15/18                                         2,200          2,332
                                                                       ---------
        GROUP TOTAL                                                      128,566
                                                                       ---------
- --------------------------------------------------------------------------------
TOTAL MUNICIPAL BONDS
  (Cost $1,554,967)                                                    1,602,898
- --------------------------------------------------------------------------------
</TABLE>





                                       10
<PAGE>   11


<TABLE>
<CAPTION>
                                                                          Market
                                                                           Value
                                                                          (000)+
- --------------------------------------------------------------------------------
<S>                                                                   <C>
OTHER ASSETS AND LIABILITIES (-2.4%)                                            
- --------------------------------------------------------------------------------
  Other Assets--Note B                                                $   29,377
  Liabilities                                                            (66,869)
                                                                      ----------
                                                                         (37,492)
- --------------------------------------------------------------------------------
NET ASSETS (100%)                                                               
- --------------------------------------------------------------------------------
  Applicable to 143,641,179 outstanding shares
    of beneficial interest (unlimited
    authorization--no par value)                                      $1,565,406
- --------------------------------------------------------------------------------
NET ASSET VALUE PER SHARE                                                 $10.90
================================================================================
</TABLE>

+See Note A to Financial Statements.

For explanations of abbreviations and other references, see page 13.


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
AT MAY 31, 1996, NET ASSETS CONSISTED OF:                                       
- --------------------------------------------------------------------------------
                                                           AMOUNT            PER
                                                            (000)          SHARE
                                                       ----------         ------
  <S>                                                  <C>                <C>
  PAID IN CAPITAL                                      $1,515,134         $10.55
  UNDISTRIBUTED NET
    INVESTMENT INCOME                                          --             --
  ACCUMULATED NET REALIZED
    GAINS                                                   3,173            .02
  UNREALIZED APPRECIATION
    (DEPRECIATION)--NOTE E:
    INVESTMENT SECURITIES                                  47,931            .34
    FUTURES CONTRACTS                                        (832)          (.01)
- --------------------------------------------------------------------------------
NET ASSETS                                             $1,565,406         $10.90
- --------------------------------------------------------------------------------
</TABLE>

<TABLE>
<CAPTION>
                                                             Face         Market
MONEY MARKET                                               Amount          Value
PORTFOLIO                                                   (000)         (000)+
- --------------------------------------------------------------------------------
<S>                                                      <C>           <C>
MUNICIPAL BONDS (99.1%)                                                         
- --------------------------------------------------------------------------------
  Allegheny County PA GO VRDO
    TOB 3.60%, 6/6/96 (2)                                $  3,000      $   3,000
    3.75%, 6/6/96                                          17,900         17,900
  Allegheny County PA Higher
    Education Auth. VRDO
    (Univ. of Pittsburgh)
    3.40%-3.45%, 6/6/96 LOC                                38,030         38,030
  Allegheny County PA Hosp.
    Development Auth.
    (Allegheny General Hosp.)
    VRDO 3.55%-3.60%, 6/5/96 LOC                           33,250         33,250
    (Children's Hosp.-Pittsburgh)
    VRDO 3.45%, 6/6/96 (1)                                 20,400         20,400
    (Health Center Development)
    CP 3.70%, 7/9/96 LOC                                   14,800         14,800
    (South Hills Health System)
    VRDO 3.55%, 6/5/96 LOC                                  1,800          1,800
  Allegheny County PA PCR CP
    (Duquesne Light Co.)
    3.50%, 6/6/96 LOC                                       5,000          5,000
  Allegheny County PA Port Auth.
    4.00%, 3/1/97 (2)                                       6,845          6,888
  Beaver County PA IDA PCR
    (Duquesne Light Co.)
    CP 3.20%-3.65%,
    7/9/96-8/26/96 LOC                                     60,045         60,045
    VRDO 3.65%, 6/5/96 LOC                                 15,000         15,000
  Berks County PA TRAN
    4.50%, 12/31/96                                        10,850         10,881
  Dauphin County PA General Auth.
    Hosp. Rev. VRDO
    (Reading Hosp. & Medical Center)
    3.70%, 6/5/96                                          10,400         10,400
  Delaware County PA IDA Airport
    Facilities Rev. VRDO
    (United Parcel Service)
    3.60%, 6/4/96                                          64,100         64,100
  Delaware County PA IDA PCR
    (PECO)
    CP 3.25%-3.65%,
    7/17/96-8/23/96 (3)                                    32,980         32,980
    VRDO 3.55%, 6/5/96 LOC                                 24,125         24,125
  Delaware County PA IDA
    Solid Waste Rev. VRDO
    (Scott Paper Co.)
    3.50%, 6/5/96                                          37,200         37,200
  Downingtown PA School Dist. GO
    4.00%, 3/1/97                                           1,305          1,308
</TABLE>





                                       11
<PAGE>   12
                      STATEMENT OF NET ASSETS (continued)

<TABLE>
<CAPTION>
                                                             Face         Market
MONEY MARKET                                               Amount          Value
PORTFOLIO (continued)                                       (000)         (000)+
- --------------------------------------------------------------------------------
  <S>                                                    <C>           <C>
  Emmaus PA General Auth. Local
    Govt. Rev. VRDO
    (Allentown)
    3.80%, 6/5/96 LOC                                    $  7,000      $   7,000
    (Altoona Area School Dist.)
    3.80%, 6/5/96 LOC                                      14,400         14,400
    (East Penn School Dist.)
    3.80%, 6/5/96 LOC                                      10,000         10,000
    (Great Valley School Dist.)
    3.90%, 6/5/96 LOC                                      15,000         15,000
    (Hatboro-Horsham School Dist.)
    3.80%, 6/5/96 LOC                                       8,400          8,400
    (Highlands School Dist.)
    3.80%, 6/5/96 LOC                                      10,000         10,000
    (Lower Dauphin School Dist.)
    3.90%, 6/5/96 LOC                                       5,000          5,000
    (Owen J. Roberts School Dist.)
    3.80%, 6/5/96 LOC                                       7,900          7,900
    (Pooled Program)
    3.80%, 6/5/96                                          31,000         31,000
    (Red Lion School Dist.)
    3.90%, 6/5/96 LOC                                       3,500          3,500
    (Southmoreland School Dist.)
    3.80%, 6/5/96 LOC                                       5,200          5,200
    (West Chester School Dist.)
    3.90%, 6/5/96 LOC                                      10,000         10,000
  Geisinger Health System Auth. of PA
    VRDO 3.65%, 6/4/96                                     33,700         33,700
  Lancaster PA Higher
    Education Auth. VRDO
    (Franklin & Marshall)
    3.90%, 6/5/96                                           2,125          2,125
  Lehigh County PA General
    Purpose Auth. CP
    (Hosp. Central Services)
    3.20%, 7/25/96 (1)                                     10,000         10,000
  Lehigh County PA IDA PCR TOB
    (Pennsylvania Power & Light)
    VRDO 3.60%, 6/6/96 (1)                                  3,200          3,200
  Montgomery County PA IDA PCR CP
    (PECO)
    3.20%-3.65%,
    6/6/96-8/20/96 LOC                                     33,170         33,170
  Northeastern PA Hosp. & Education
    Auth. VRDO
    (Wyoming Valley Health Care
    Obligated Group)
    3.75%, 6/5/96 (2)                                      41,800         41,800
  Northeastern PA Hosp. Auth.
    Pooled CP
    (Hosp. Central Services)
    3.25%-3.70%,
    7/24/96-8/22/96 (1)                                    32,940         32,940
  Pennsylvania GO
    TOB 3.60%, 6/6/96 (2)                                   9,125          9,125
    4.40%-6.00%,
    7/1/96-6/15/97                                         17,535         17,634
    6.00%, 11/1/96 (1)                                      5,000          5,053
  Pennsylvania Higher Education
    Facilities Auth.
    (Carnegie Mellon Univ.)
    VRDO 3.65%, 6/4/96                                     53,300         53,300
    (Temple Univ.)
    VRDO 3.65%, 6/4/96 LOC                                 34,700         34,700
    (Thomas Jefferson Univ.)
    PUT 3.30%, 8/26/96                                      8,100          8,100
    (Univ. of PA Health System
    Obligated Group)
    VRDO 3.60%-3.65%, 6/5/96                               91,000         91,000
  Pennsylvania Higher Education
    Univ. Funding (Temple Univ.)
    4.625%, 5/20/97                                        17,000         17,147
  Pennsylvania Infrastructure
    Investment Auth.
    (Pennvest Loan Pooled Project)
    VRDO 3.85%-4.25%, 6/5/96                               30,800         30,800
  Pennsylvania Intergovernmental
    Cooperative Auth.
    5.00%-5.20%,
    6/15/96-6/15/97 (3)                                    13,150         13,219
  Pennsylvania State Univ. Notes
    4.25%, 4/4/97                                           3,250          3,270
  Pennsylvania TAN
    4.50%, 6/28/96                                         56,000         56,038
  Pennsylvania Turnpike Rev.
    TOB VRDO 3.60%,
    6/6/96 (Prere.)                                        12,000         12,000
    7.875%, 12/1/96 (Prere.)                               14,505         15,091
  Philadelphia PA Hosp. & Higher
    Education Facilities Auth.
    (Children's Hosp.)
    VRDO 3.65%, 6/4/96                                      3,400          3,400
    (Pennsylvania Hosp.)
    VRDO 3.50%, 6/5/96 (3)                                 30,000         30,000
    PUT 3.85%, 7/1/96 (3)                                  30,000         29,994
</TABLE>





                                       12
<PAGE>   13


<TABLE>
<CAPTION>
                                                             Face         Market
                                                           Amount          Value
                                                            (000)         (000)+
- --------------------------------------------------------------------------------
<S>                                                      <C>          <C>
  Philadelphia PA IDA VRDO
    (Fox Chase Institute for
    Cancer Research)
    3.65%, 6/4/96 LOC                                    $  4,500     $    4,500
  Philadelphia PA School Dist. TRAN
    4.50%, 6/28/96                                         21,000         21,011
  Philadelphia PA Water &
    Waste Water Rev.
    4.50%, 6/15/97 (1)                                      5,000          5,037
  St. Mary's Hosp. Auth.
    Langhorne PA
    (Franciscan Health System)
    3.60%, 6/4/96 LOC                                      18,230         18,230
  Sayre PA Health Care
    Facilities Auth. VRDO
    (Pooled Capital Asset
    Financing Program)
    3.50%, 6/5/96 (2)                                      56,245         56,245
  Univ. of Pittsburgh PA
    Higher Education VRDO
    3.40%, 6/6/96 LOC                                      37,000         37,000
  York County PA IDA PCR VRDO
    (PECO)
    3.55%, 6/5/96 LOC                                      15,440         15,440
    (Public Service Electric & Gas)
    3.45%, 6/5/96 (1)                                       5,200          5,200
OUTSIDE PENNSYLVANIA:
  Puerto Rico Govt. Development Bank
    VRDO 3.25%, 6/5/96 LOC                                 21,000         21,000
- --------------------------------------------------------------------------------
TOTAL MUNICIPAL BONDS
  (Cost $1,294,976)                                                    1,294,976
- --------------------------------------------------------------------------------
OTHER ASSETS AND LIABILITIES (.9%)                                              
- --------------------------------------------------------------------------------
  Other Assets--Note B                                                    17,623
  Liabilities                                                             (6,324)
                                                                      ----------
                                                                          11,299
- --------------------------------------------------------------------------------
NET ASSETS (100%)                                                               
- --------------------------------------------------------------------------------
  Applicable to 1,306,325,010 outstanding
    shares of beneficial interest
    (unlimited authorization--no par value)                           $1,306,275
- --------------------------------------------------------------------------------
NET ASSET VALUE PER SHARE                                                  $1.00
================================================================================
</TABLE>
+See Note A to Financial Statements.


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
AT MAY 31, 1996, NET ASSETS CONSISTED OF:                                       
- --------------------------------------------------------------------------------
                                                           AMOUNT            PER
                                                            (000)          SHARE
                                                       ----------          -----
<S>                                                    <C>                 <C>
  PAID IN CAPITAL                                      $1,306,323          $1.00
  UNDISTRIBUTED NET
    INVESTMENT INCOME                                          --             --
  ACCUMULATED NET
    REALIZED LOSSES                                           (48)            --
  UNREALIZED APPRECIATION
    OF INVESTMENTS                                             --             --
- --------------------------------------------------------------------------------
NET ASSETS                                             $1,306,275          $1.00
- --------------------------------------------------------------------------------
</TABLE>

BAN=Bond Anticipation Note
COP=Certificate of Participation
CP=Commercial Paper
GO=General Obligation Bond
IDA=Industrial Development Authority Bond
IDR=Industrial Development Revenue Bond
PCR=Pollution Control Revenue Bond
PUT=Put Option Obligation
Rev.=Revenue Bond
TAN=Tax Anticipation Note
TAW=Tax Anticipation Warrant
TOB=Tender Option Bond
TRAN=Tax Revenue Anticipation Note
VRDO=Variable Rate Demand Obligation
(ETM)=Escrowed to Maturity
(Prere.)=Prerefunded

++Security purchased on a when-issued or delayed delivery basis for which the
  Fund has not taken delivery as of May 31, 1996.

Scheduled principal and interest payments are guaranteed by:
(1) MBIA (Municipal Bond Insurance Association)
(2) AMBAC (AMBAC Indemnity Corporation)
(3) FGIC (Financial Guaranty Insurance Company)
(4) FSA (Financial Security Assurance)
(5) CGI (Capital Guaranty Insurance)
(6) BIGI (Bond Investors Guaranty Insurance)
(7) Connie Lee Inc.
(8) FHA (Federal Housing Authority)
The insurance does not guarantee the market value of the municipal bonds.

LOC=Scheduled principal and interest payments are guaranteed by bank letter of
credit.





                                       13
<PAGE>   14
                            STATEMENT OF OPERATIONS

<TABLE>
<CAPTION>
                                                                    INSURED LONG-TERM                   MONEY MARKET
                                                                            PORTFOLIO                      PORTFOLIO
- --------------------------------------------------------------------------------------------------------------------
                                                                     Six Months Ended               Six Months Ended
                                                                         May 31, 1996                   May 31, 1996
                                                                                (000)                          (000)
- --------------------------------------------------------------------------------------------------------------------
<S>                                                             <C>          <C>                 <C>         <C>
INVESTMENT INCOME
   INCOME
      Interest  . . . . . . . . . . . . . . . . . . . . . .                  $ 44,655                        $22,410
- --------------------------------------------------------------------------------------------------------------------
               Total Income   . . . . . . . . . . . . . . .                    44,655                         22,410
- --------------------------------------------------------------------------------------------------------------------
   EXPENSES
      The Vanguard Group--Note B
         Investment Advisory Services   . . . . . . . . . .     $   92                           $ 72
         Management and Administrative  . . . . . . . . . .      1,267                            959
         Marketing and Distribution . . . . . . . . . . . .        168          1,527             189          1,220
                                                                ------                           ----               
      Insurance Expense . . . . . . . . . . . . . . . . . .                        22                             --
      Custodian Fees  . . . . . . . . . . . . . . . . . . .                        19                             18
      Auditing Fees   . . . . . . . . . . . . . . . . . . .                         4                              4
      Shareholders' Reports . . . . . . . . . . . . . . . .                        24                             17
      Annual Meeting and Proxy Costs  . . . . . . . . . . .                         5                              4
      Trustees' Fees and Expenses . . . . . . . . . . . . .                         2                              2
- --------------------------------------------------------------------------------------------------------------------
               Total Expenses . . . . . . . . . . . . . . .                     1,603                          1,265
               Expenses Paid Indirectly--Note C . . . . . .                       (19)                           (18)
- -------------------------------------------------------------------------------------------------------------------- 
               Net Expenses . . . . . . . . . . . . . . . .                     1,584                          1,247
- --------------------------------------------------------------------------------------------------------------------
                  Net Investment Income . . . . . . . . . .                    43,071                         21,163
- --------------------------------------------------------------------------------------------------------------------
REALIZED NET GAIN (LOSS)
      Investment Securities Sold  . . . . . . . . . . . . .                     5,788                             --
      Futures Contracts . . . . . . . . . . . . . . . . . .                    (1,297)                            --
- --------------------------------------------------------------------------------------------------------------------
                  Realized Net Gain . . . . . . . . . . . .                     4,491                             --
- --------------------------------------------------------------------------------------------------------------------
CHANGE IN UNREALIZED APPRECIATION
   (DEPRECIATION)
      Investment Securities . . . . . . . . . . . . . . . .                   (54,489)                            --
      Futures Contracts . . . . . . . . . . . . . . . . . .                       826                             --
- --------------------------------------------------------------------------------------------------------------------
                  Change in Unrealized
                     Appreciation (Depreciation)  . . . . .                   (53,663)                            --
- --------------------------------------------------------------------------------------------------------------------
                  Net Increase (Decrease) in Net Assets
                     Resulting from Operations  . . . . . .                  $ (6,101)                       $21,163
====================================================================================================================
</TABLE>





                                       14
<PAGE>   15
                       STATEMENT OF CHANGES IN NET ASSETS

<TABLE>
<CAPTION>
                                                                        INSURED LONG-TERM                        MONEY MARKET
                                                                                PORTFOLIO                           PORTFOLIO
- -----------------------------------------------------------------------------------------------------------------------------
                                                      SIX MONTHS ENDED         Year Ended  SIX MONTHS ENDED        Year Ended
                                                               MAY 31,       November 30,           MAY 31,      November 30,
                                                                  1996               1995              1996              1995
                                                                 (000)              (000)             (000)             (000)
- -----------------------------------------------------------------------------------------------------------------------------
<S>                                                         <C>                <C>               <C>              <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS
   Net Investment Income  . . . . . . . . . . . . . . . . . $   43,071         $   81,331        $   21,163       $    41,411
   Realized Net Gain (Loss)   . . . . . . . . . . . . . . .      4,491              3,960                --                (9)
   Change in Unrealized Appreciation
      (Depreciation)  . . . . . . . . . . . . . . . . . . .    (53,663)           154,719                --                --
- -----------------------------------------------------------------------------------------------------------------------------
      Net Increase (Decrease) in Net Assets
         Resulting from Operations  . . . . . . . . . . . .     (6,101)           240,010            21,163            41,402
- -----------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
   Net Investment Income  . . . . . . . . . . . . . . . . .    (43,071)           (81,331)          (21,163)          (41,411)
   Realized Net Gain  . . . . . . . . . . . . . . . . . . .     (5,205)                --                --                --
- -----------------------------------------------------------------------------------------------------------------------------
      Total Distributions   . . . . . . . . . . . . . . . .    (48,276)           (81,331)          (21,163)          (41,411)
- ----------------------------------------------------------------------------------------------------------------------------- 
CAPITAL SHARE TRANSACTIONS (1)
   Issued   . . . . . . . . . . . . . . . . . . . . . . . .    161,312            321,317           840,110         1,325,637
   Issued in Lieu of Cash Distributions . . . . . . . . . .     34,112             56,112            19,459            38,465
   Redeemed   . . . . . . . . . . . . . . . . . . . . . . .   (144,679)          (265,925)         (752,978)       (1,269,390)
- ----------------------------------------------------------------------------------------------------------------------------- 
      Net Increase from Capital
         Share Transactions . . . . . . . . . . . . . . . .     50,745            111,504           106,591            94,712
- -----------------------------------------------------------------------------------------------------------------------------
      Total Increase (Decrease) . . . . . . . . . . . . . .     (3,632)           270,183           106,591            94,703
- -----------------------------------------------------------------------------------------------------------------------------
NET ASSETS
   Beginning of Period  . . . . . . . . . . . . . . . . . .  1,569,038          1,298,855         1,199,684         1,104,981
- -----------------------------------------------------------------------------------------------------------------------------
   End of Period  . . . . . . . . . . . . . . . . . . . . . $1,565,406         $1,569,038        $1,306,275       $ 1,199,684
=============================================================================================================================
   (1)Shares Issued and Redeemed
      Issued  . . . . . . . . . . . . . . . . . . . . . . .     14,485             29,723           840,110         1,325,637
      Issued in Lieu of Cash Distributions  . . . . . . . .      3,063              5,152            19,459            38,465
      Redeemed  . . . . . . . . . . . . . . . . . . . . . .    (13,023)           (24,765)         (752,978)       (1,269,390)
- ----------------------------------------------------------------------------------------------------------------------------- 
                                                                 4,525             10,110           106,591            94,712
- -----------------------------------------------------------------------------------------------------------------------------
</TABLE>





                                       15
<PAGE>   16
                              FINANCIAL HIGHLIGHTS

<TABLE>
<CAPTION>
                                                                          INSURED LONG-TERM PORTFOLIO          
- ---------------------------------------------------------------------------------------------------------------
                                                                            Year Ended November 30,            
                                            SIX MONTHS ENDED     ----------------------------------------------
For a Share Outstanding Throughout Each Period  MAY 31, 1996      1995      1994       1993      1992      1991
- ---------------------------------------------------------------------------------------------------------------
<S>                                                  <C>      <C>       <C>         <C>      <C>         <C>
NET ASSET VALUE, BEGINNING OF PERIOD  . . . . . .     $11.28    $10.07    $11.36     $10.96    $10.47    $10.19
                                                      ------    ------    ------     ------    ------    ------
INVESTMENT OPERATIONS
   Net Investment Income  . . . . . . . . . . . .       .304      .612      .625       .631      .664      .667
   Net Realized and Unrealized Gain (Loss)
      on Investments  . . . . . . . . . . . . . .      (.343)    1.210    (1.211)      .624      .520      .286
                                                      ------    ------    ------     ------    ------    ------
         TOTAL FROM INVESTMENT OPERATIONS . . . .      (.039)    1.822     (.586)     1.255     1.184      .953
- ---------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
   Dividends from Net Investment Income . . . . .      (.304)    (.612)    (.625)     (.631)    (.664)    (.667)
   Distributions from Realized Capital Gains  . .      (.037)       --     (.079)     (.224)    (.030)    (.006)
                                                      ------    ------    ------     ------    ------    ------ 
         TOTAL DISTRIBUTIONS  . . . . . . . . . .      (.341)    (.612)    (.704)     (.855)    (.694)    (.673)
- --------------------------------------------------------------------------------------------------------------- 
NET ASSET VALUE, END OF PERIOD  . . . . . . . . .     $10.90    $11.28    $10.07     $11.36    $10.96    $10.47
===============================================================================================================
TOTAL RETURN  . . . . . . . . . . . . . . . . . .     -0.36%   +18.48%    -5.44%    +11.90%   +11.65%    +9.65%
- ---------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA 
- -------------------------
Net Assets, End of Period (Millions)  . . . . . .    $1,565    $1,569    $1,299     $1,496    $1,130      $828
Ratio of Total Expenses to Average Net Assets . .      .20%*      .20%      .20%       .20%     .24%+     .25%+
Ratio of Net Investment Income to
   Average Net Assets . . . . . . . . . . . . . .     5.45%*     5.63%     5.76%      5.61%     6.17%     6.46%
Portfolio Turnover Rate . . . . . . . . . . . . .       12%*       12%       16%        14%       17%        2%
- ---------------------------------------------------------------------------------------------------------------
</TABLE>

 *Annualized.

 +Insurance expense represents .01% and .01%.





                                       16
<PAGE>   17

<TABLE>
<CAPTION>
                                                                             MONEY MARKET PORTFOLIO            
- ---------------------------------------------------------------------------------------------------------------
                                                                            Year Ended November 30,            
                                            SIX MONTHS ENDED     ----------------------------------------------
For a Share Outstanding Throughout Each Period  MAY 31, 1996      1995      1994       1993      1992      1991
- ---------------------------------------------------------------------------------------------------------------
<S>                                                  <C>       <C>       <C>         <C>       <C>       <C>
NET ASSET VALUE, BEGINNING OF PERIOD  . . . . . .      $1.00     $1.00     $1.00      $1.00     $1.00     $1.00
                                                       -----     -----     -----      -----     -----     -----
INVESTMENT OPERATIONS
   Net Investment Income  . . . . . . . . . . . .       .017      .036      .025       .024      .029      .045
   Net Realized and Unrealized Gain (Loss)
      on Investments  . . . . . . . . . . . . . .         --        --        --         --        --        --
                                                       -----     -----     -----      -----     -----     -----
         TOTAL FROM INVESTMENT OPERATIONS . . . .       .017      .036      .025       .024      .029      .045
- ---------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
   Dividends from Net Investment Income . . . . .      (.017)    (.036)    (.025)     (.024)    (.029)    (.045)
   Distributions from Realized Capital Gains  . .         --        --        --         --        --        --
                                                       -----     -----     -----      -----     -----     -----
         TOTAL DISTRIBUTIONS  . . . . . . . . . .      (.017)    (.036)    (.025)     (.024)    (.029)    (.045)
- --------------------------------------------------------------------------------------------------------------- 
NET ASSET VALUE, END OF PERIOD  . . . . . . . . .      $1.00     $1.00     $1.00      $1.00     $1.00     $1.00
===============================================================================================================
TOTAL RETURN  . . . . . . . . . . . . . . . . . .     +1.70%    +3.69%    +2.57%     +2.38%    +2.96%    +4.59%
- ---------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- ------------------------
Net Assets, End of Period (Millions)  . . . . . .     $1,306    $1,200    $1,105       $935      $782      $818
Ratio of Total Expenses to Average Net Assets . .      .20%*      .20%      .20%       .20%      .24%      .24%
Ratio of Net Investment Income to
   Average Net Assets . . . . . . . . . . . . . .     3.35%*     3.62%     2.55%      2.35%     2.93%     4.48%
Portfolio Turnover Rate . . . . . . . . . . . . .        N/A       N/A       N/A        N/A       N/A       N/A
- ---------------------------------------------------------------------------------------------------------------
</TABLE>

*Annualized.





                                       17
<PAGE>   18
                         NOTES TO FINANCIAL STATEMENTS

Vanguard Pennsylvania Tax-Free Fund is registered under the Investment Company
Act of 1940 as an open-end investment company and consists of the Insured
Long-Term and Money Market Portfolios. Each Portfolio invests in debt
instruments of municipal issuers whose ability to meet their obligations may be
affected by economic and political developments in the Commonwealth of
Pennsylvania.

A.   The following significant accounting policies are in conformity with
generally accepted accounting principles for investment companies. Such
policies are consistently followed by the Fund in the preparation of financial
statements.

1. SECURITY VALUATION: Money Market Portfolio: investment securities are stated
   at amortized cost which approximates market value.  Insured Long-Term
   Portfolio: municipal bonds are valued utilizing primarily the latest bid
   prices or, if bid prices are not available, on the basis of valuations based
   on a matrix system (which considers such factors as security prices, yields,
   maturities, and ratings), both as furnished by an independent pricing
   service.

2. FEDERAL INCOME TAXES: Each Portfolio of the Fund intends to continue to
   qualify as a regulated investment company and distribute all of its income.
   Accordingly, no provision for Federal income taxes is required in the
   financial statements.

3. FUTURES: The Insured Long-Term Portfolio utilizes Municipal Bond Index, U.S.
   Treasury Bond, and U.S. Treasury Note futures contracts to a limited extent,
   with the objectives of enhancing returns, managing interest rate risk,
   maintaining liquidity, diversifying credit risk, and minimizing transaction
   costs. The Portfolio may purchase futures contracts instead of municipal
   bonds when futures contracts are believed to be priced more attractively
   than municipal bonds. The Portfolio may also seek to take advantage of price
   differences among bond market sectors by simultaneously buying futures (or
   bonds) of one market sector and selling futures (or bonds) of another
   sector. Futures contracts may also be used to simulate a fully invested
   position in the underlying bonds while maintaining a cash balance for
   liquidity.

   The primary risks associated with the use of futures contracts are imperfect
   correlation between changes in market values of bonds held by the Portfolio
   and the prices of futures contracts, and the possibility of an illiquid
   market. Futures contracts are valued based upon their quoted daily
   settlement prices. Fluctuations in the values of futures contracts are
   recorded as unrealized appreciation (depreciation) until terminated at which
   time realized gains (losses) are recognized. Unrealized appreciation
   (depreciation) related to open futures contracts is required to be treated
   as realized gain (loss) for Federal income tax purposes.

4. DISTRIBUTIONS: Distributions from net investment income are declared on a
   daily basis payable on the first business day of the following month. Annual
   distributions from realized gains, if any, are recorded on the ex-dividend
   date. Capital gain distributions are determined on a tax basis and may
   differ from realized capital gains for financial reporting purposes due to
   differences in the timing of realization of gains.

5. OTHER: Security transactions are accounted for on the date the securities
   are purchased or sold. Costs used in determining realized gains and losses
   on the sale of investment securities are those of specific securities sold.
   Premiums and original issue discounts are amortized and accreted,
   respectively, to interest income over the lives of the respective
   securities.

B.   The Vanguard Group furnishes at cost  investment advisory, corporate
management, administrative, marketing, and distribution services. The costs of
such services are allocated to the Fund under methods approved by the Board of
Trustees. At May 31, 1996, the Fund had contributed capital





                                       18
<PAGE>   19
aggregating $296,000 to Vanguard (included in Other Assets), representing 1.5%
of Vanguard's capitalization. The Fund's officers and trustees are also
officers and directors of Vanguard.

C.   The Fund's custodian bank has agreed to reduce its fees when the Fund
maintains cash on deposit in the non-interest bearing custodian account. For
the six months ended May 31, 1996, custodian fee offset arrangements reduced
expenses of the Insured Long- Term and Money Market Portfolios by $19,000 and
$18,000, respectively.

D.   During the six months ended May 31, 1996, the Insured Long-Term Portfolio
made purchases of $139,767,000 and sales of $87,411,000 of investment
securities other than temporary cash investments.

E.   At May 31, 1996, unrealized appreciation of investment securities of the
Insured Long-Term Portfolio for financial reporting and Federal income tax
purposes aggregated $47,931,000, of which $53,189,000 related to appreciated
securities and $5,258,000 related to depreciated securities.

At May 31,1996, the Insured Long-Term Portfolio had long positions in U.S.
Treasury Bond futures contracts expiring in September 1996, with an aggregate
settlement value and net unrealized depreciation of $53,766,000 and $832,000,
respectively. The market value of securities deposited as initial margin for
open futures contracts was $3,833,000.





                                       19
<PAGE>   20
                          THE VANGUARD FAMILY OF FUNDS


                               FIXED INCOME FUNDS

MONEY MARKET FUNDS
Vanguard Admiral Funds
U.S. Treasury Money
 Market Portfolio
Vanguard Money Market Reserves
TAX-EXEMPT MONEY MARKET FUNDS
Vanguard Municipal Bond Fund
Money Market Portfolio
Vanguard State Tax-Free Funds
Money Market Portfolios
 (CA, NJ, OH, PA)
TAX-EXEMPT INCOME FUNDS
Vanguard Municipal Bond Fund
Vanguard State Tax-Free Funds
Insured Longer-Term Portfolios
 (CA, FL, NJ, NY, OH, PA)
INCOME FUNDS
Vanguard Admiral Funds
Vanguard Fixed Income
 Securities Fund
Vanguard Preferred Stock Fund


                           EQUITY AND BALANCED FUNDS

GROWTH AND INCOME FUNDS
Vanguard Convertible
Securities Fund
Vanguard Equity Income Fund
Vanguard Quantitative Portfolios
Vanguard Selected Value Portfolio
Vanguard/Trustees' Equity Fund
U.S. Portfolio
Vanguard/Windsor Fund
Vanguard/Windsor II
BALANCED FUNDS
Vanguard Asset Allocation Fund
Vanguard LifeStrategy Funds
Income Portfolio
Conservative Growth Portfolio
Moderate Growth Portfolio
Growth Portfolio
Vanguard STAR Portfolio
Vanguard/Wellesley Income Fund
Vanguard/Wellington Fund
GROWTH FUNDS
Vanguard/Morgan Growth Fund
Vanguard/PRIMECAP Fund
Vanguard U.S. Growth Portfolio
AGGRESSIVE GROWTH FUNDS
Vanguard Explorer Fund
Vanguard Horizon Fund
Global Equity Portfolio
Global Asset Allocation Portfolio
Capital Opportunity Portfolio
Aggressive Growth Portfolio
Vanguard Specialized Portfolios
INTERNATIONAL FUNDS
Vanguard International
 Growth Portfolio
Vanguard/Trustees' Equity Fund
International Portfolio


                                  INDEX FUNDS

Vanguard Index Trust
Total Stock Market Portfolio
500 Portfolio
Extended Market Portfolio
Growth Portfolio
Value Portfolio
Small Capitalization Stock Portfolio
Vanguard International Equity
 Index Fund
European Portfolio
Pacific Portfolio
Emerging Markets Portfolio
Vanguard Bond Index Fund
Vanguard Tax-Managed Fund
Vanguard Balanced Index Fund

                         [THE VANGUARD GROUP(R) LOGO]
             Vanguard Financial Center    Valley Forge, Pennsylvania 19482

              New Account Information:    Shareholder Account Services:
                      1 (800) 662-7447    1 (800) 662-2739

     This Report has been prepared for shareholders and may be distributed
       to others only if preceded or accompanied by a current prospectus.
        All Funds in the Vanguard Family are offered by prospectus only.

                                   Q772-5/96


VANGUARD
PENNSYLVANIA
TAX-FREE FUND

SEMI-ANNUAL REPORT
MAY 31, 1996


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