MAIRS & POWER INCOME FUND INC
485BPOS, 1996-04-29
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<PAGE>

                                                     Registration Number 2-18269


                          SECURITIES AND EXCHANGE COMMISSION
                                Washington D.C.  20549

                                      FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

    Post-Effective Amendment No. 39

and

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940

    Amendment No. 39

                          Mairs and Power Income Fund, Inc.

- - - --------------------------------------------------------------------------------
                 (Exact Name of Registration as Specified in Charter)

                         W-2062 First National Bank Building
                              332 Minnesota Street
                              St. Paul, MN  55101


- - - --------------------------------------------------------------------------------
                (Address of Principal Executive Offices)    (Zip Code)

Registrant's Telephone Number, Including Area Code:  (612) 222-8478

                             William B. Frels, President
                         W-2062 First National Bank Building
                                 332 Minnesota Street
                                 St. Paul, MN  55101


- - - --------------------------------------------------------------------------------
                       (Name and Address of Agent for Service)

It is proposed that this filing will become effective (check appropriate box)

    / /  immediately upon filing pursuant to paragraph  (b)
    /X/  on April 29, 1996 pursuant to paragraph   (b)
    / /  60 days after filing pursuant to paragraph  (a)
    / /  on (date) pursuant to paragraph  (a)  of Rule 485

- - - --------------------------------------------------------------------------------

<PAGE>

                          MAIRS AND POWER INCOME FUND, INC.

                                CROSS REFERENCE SHEET

Form N-1A Item
- - - --------------
Part A - Prospectus                     Heading in Prospectus
- - - -----------------------------------     ----------------------------------------

1.  Cover Page                         Prospectus

2.  Synopsis                           Fund Expenses

3.  Condensed Financial Information    Financial Highlights

4.  General Description of Registrant  Investment Objective and Policies; the
                                       Fund; Risks

5.  Management of the Fund             Management of the Fund

5A.  Management's Discussion of Fund   Management's Discussion of Fund
     Performance                       Performance

6.  Capital Stock and Other            The Fund; Distributions and Tax
    Securities                         Consequences

7.  Purchase of Securities Offered     Purchasing Shares; Determining Net Asset
                                       Value Per Share

8.  Redemption or Repurchase           Redeeming Shares

9.  Pending Legal Proceedings          Not Applicable

Part B - Statement of Additional       Heading in Statement of Additional
Information                            Information
- - - -----------------------------------     ----------------------------------------

10.  Cover Page                        Statement of Additional Information

11.  Table of Contents                 Table of Contents

12.  General Information and History   Not Applicable

13.  Investment Objectives and         Investment Objective and Policies;
     Policies                          Investment Limitation; Portfolio
                                       Turnover

14.  Management of the Fund            Officers and Directors


                                          2

<PAGE>

                          MAIRS AND POWER INCOME FUND, INC.

                                CROSS REFERENCE SHEET


Form N-1A Item
- - - --------------

Part B - Statement of Additional       Heading in Statement of Additional
Information                            Information
- - - -----------------------------------     ----------------------------------------

15.  Control Persons and Principal     Officers and Directors; Principal
     Holders of Securities             Holders of Securities

16.  Investment Advisory and Other     Investment Adviser; Transfer Agent and
     Services                          Custodian

17.  Brokerage Allocation and Other    Portfolio Transactions
     Practices

18.  Capital Stock and Other           (Included in Prospectus Under "The Fund")
     Securities

19.  Purchase, Redemption and          Purchasing and Redeeming Shares
     Pricing of Securities Being
     Offered

20.  Tax Status                        (Included in Prospectus Under
                                       "Distributions and Tax Consequences")

21.  Underwriters                      Not Applicable

22.  Calculation of Performance Data   Not Applicable

23.  Financial Statements              Financial Statements


                                          3

<PAGE>
                                                 W-2062 FIRST NATIONAL BANK
                                                 BLDG.
                                                 332 MINNESOTA STREET
                                                 ST. PAUL, MN 55101
                                                 612-222-8478
 
                                            OBJECTIVE
 
                                                 To provide liberal current
                                                 income and the possibility of
                                                 modest long-term capital
                                                 appreciation by investing in a
                                                 diversified list of securities,
                                                 including bonds, preferred and
                                                 common stocks and securities
                                                 convertible into common stock.
 
                                                 The Prospectus, which should be
                                                 retained for future reference,
                                                 is designed to set forth
                                                 concisely the information you
                                                 should know before you invest.
                                                 A "Statement of Additional
                                                 Information" dated April 29,
                                                 1996, and incorporated herein
                                                 by reference, has been filed
                                                 with the Securities and
                                                 Exchange Commission. A copy of
                                                 the
    PROSPECTUS
                                                 Statement may be obtained,
                                                 without charge, by writing to
                                                 or calling the Fund.
          April 29, 1996
 
                                            A NO-LOAD FUND
 
                                                 There is no sales charge for
                                                 the purchase or sale of Fund
                                                 shares.
 
                                                 THESE SECURITIES HAVE NOT BEEN
                                                 APPROVED OR DISAPPROVED BY THE
                                                 SECURITIES AND EXCHANGE
                                                 COMMISSION OR ANY STATE
                                                 SECURITIES COMMISSION, NOR HAS
                                                 THE SECURITIES AND EXCHANGE
                                                 COMMISSION OR ANY STATE
                                                 SECURITIES COMMISSION PASSED
                                                 UPON THE ACCURACY OR ADEQUACY
                                                 OF THE PROSPECTUS. ANY
                                                 REPRESENTATION TO THE CONTRARY
                                                 IS A CRIMINAL OFFENSE.
<PAGE>
- - - --------------------------------------------------------------------------------
                               TABLE OF CONTENTS
 
<TABLE>
<S>                                                                                       <C>
Fund Expenses...........................................................................          2
Condensed Financial Information.........................................................          3
Financial Highlights Chart..............................................................          3
Investment Objective and Policies.......................................................          4
Management of the Fund..................................................................          4
Management's Discussion of Fund Performance.............................................          5
Comparison Chart (Fund, S & P 500 Index, Consumer Price Index)..........................          5
The Fund................................................................................          6
Purchasing Shares.......................................................................          6
Redeeming Shares........................................................................          6
Distributions and Tax Consequences......................................................          7
Determining Net Asset Value Per Share...................................................          8
Other Services..........................................................................          8
Risks...................................................................................          8
</TABLE>
 
- - - --------------------------------------------------------------------------------
 
FUND EXPENSES
 
  The purpose of the following table is to assist investors in understanding the
various  costs and expenses that  an investor in the  Fund will bear directly or
indirectly, and importantly, to compare the expense of an investment in the Fund
with other similar investments.
 
<TABLE>
<S>                                                                          <C>
                           SHAREHOLDER TRANSACTION EXPENSES
Maximum Sales Load Imposed on Purchases....................................  None
Maximum Sales Load Imposed on Reinvested Dividends.........................  None
Deferred Sales Load........................................................  None
Redemption Fees............................................................  None
Exchange Fee...............................................................  None
</TABLE>
 
<TABLE>
<S>                                                                          <C>
         ANNUAL FUND OPERATING EXPENSES FOR THE YEAR ENDED DECEMBER 31, 1995
                       (AS A PERCENTAGE OF AVERAGE NET ASSETS)
Management Fees............................................................      0.60%
12b-1 Fees.................................................................      0.00
Other Expenses.............................................................      0.52
                                                                             ---------
Total Operating Expenses...................................................      1.12%
                                                                             ---------
</TABLE>
 
<TABLE>
<CAPTION>
               EXAMPLE                    1 year       3 years      5 years     10 years
                                        -----------  -----------  -----------  -----------
<S>                                     <C>          <C>          <C>          <C>
You would pay  the following  expenses
on  a $1,000  investment, assuming (1)
5% annual return and (2) redemption at
the end of each time period:             $      11    $      36    $      62    $     137
</TABLE>
 
Although this example is  based on actual  expenses in the  most recent year  it
should  not be  considered a representation  of past or  future expenses; actual
expenses in future years may be greater or less than those shown.
 
                                       2
<PAGE>
CONDENSED FINANCIAL INFORMATION
 
  The following table shows certain important financial information which may be
helpful in evaluating the  Fund's results. The information  is derived from  the
Fund's  financial  statements, which  have been  audited by  Ernst &  Young LLP,
independent auditors. The financial statements and auditors' report may be found
in the Fund's most recent annual  report which may be obtained, without  charge,
by  writing to or  calling the Fund  at the number  listed on the  front of this
Prospectus.
 
                              FINANCIAL HIGHLIGHTS
            (SELECTED PER SHARE DATA AND RATIOS -- FOR EACH SHARE OF
               CAPITAL STOCK OUTSTANDING THROUGHOUT EACH PERIOD)
 
<TABLE>
<CAPTION>
                                                                           YEAR ENDED DECEMBER 31
                                           1995     1994     1993     1992     1991     1990     1989     1988     1987     1986
<S>                                       <C>      <C>      <C>      <C>      <C>      <C>      <C>      <C>      <C>      <C>
                                          ----------------------------------------------------------------------------------------
 
PER SHARE
Net asset value, beginning of year        $ 52.42  $ 56.38  $ 53.82  $ 53.34  $ 44.11  $ 45.78  $ 41.39  $ 39.08  $ 42.53  $ 41.86
Investment operations:
  Net investment income                      2.01     2.09     2.00     2.00     1.98     2.12     2.13     2.24     2.00     1.98
  Net realized and unrealized gains
    (losses) on investments                 13.55   (3.25)     3.79     1.07     9.24   (1.53)     5.07     3.14   (1.16)     4.38
                                          -------  -------  -------  -------  -------  -------  -------  -------  -------  -------
Total from investment operations            15.56   (1.16)     5.79     3.07    11.22     0.59     7.20     5.38     0.84     6.36
Less distributions:
  Dividends (from net investment income)   (2.04)   (2.06)   (1.98)   (1.99)   (1.99)   (2.13)   (2.15)   (2.23)   (2.11)   (1.95)
 
  Distributions (from capital gains)       (0.55)   (0.74)   (1.25)   (0.60)       --   (0.13)   (0.66)   (0.84)   (2.18)   (3.74)
                                          -------  -------  -------  -------  -------  -------  -------  -------  -------  -------
Total distributions                        (2.59)   (2.80)   (3.23)   (2.59)   (1.99)   (2.26)   (2.81)   (3.07)   (4.29)   (5.69)
                                          -------  -------  -------  -------  -------  -------  -------  -------  -------  -------
Net asset value, end of year              $ 65.39  $ 52.42  $ 56.38  $ 53.82  $ 53.34  $ 44.11  $ 45.78  $ 41.39  $ 39.08  $ 42.53
                                          -------  -------  -------  -------  -------  -------  -------  -------  -------  -------
 
TOTAL INVESTMENT RETURN                     30.0%   (2.1)%    10.9%     5.9%    25.9%     1.4%    17.7%    13.9%     1.7%    15.3%
                                          -------  -------  -------  -------  -------  -------  -------  -------  -------  -------
                                          -------  -------  -------  -------  -------  -------  -------  -------  -------  -------
NET ASSETS, END OF YEAR (000'S OMITTED)    16,979   12,973   13,442   11,536   10,676    8,075    7,886    6,570    5,772    5,395
 
RATIOS/SUPPLEMENTAL DATA:
  Ratio of expenses to average net
    assets                                  1.12%    1.11%    1.06%    1.13%    1.25%    1.20%    1.22%    1.22%    1.20%    1.20%
  Ratio of net investment income to
    average net assets                      3.47%    3.80%    3.50%    3.72%    4.02%    4.78%    4.78%    5.33%    4.43%    4.43%
 
  Portfolio turnover rate                   3.95%   17.28%   24.10%   16.12%   24.37%   20.15%   14.18%   25.83%   20.83%   32.46%
</TABLE>
 
                                       3
<PAGE>
INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's objective is  to provide its shareholders  with liberal income  and
the  possibility  of modest  long-term capital  appreciation  by investing  in a
diversified list of securities, including bonds, preferred and common stocks and
securities convertible into common  stock. The percentage  of the Fund's  assets
invested  in  various  types of  securities  will  vary in  accordance  with the
judgment of the  Fund's investment adviser,  Mairs and Power,  Inc., but  common
stock  and securities convertible  into common stock are  expected to remain the
dominant portfolio  emphasis.  The  Fund  seeks  to  achieve  its  objective  by
investing  in a  list of holdings  that is  diversified by security  type and by
industry. Assets of  the Fund will  be reasonably fully  invested at all  times.
Cash, bank certificates of deposit and short-term debt securities may be held in
modest  amounts to provide a  reserve for future purchases  or better enable the
Fund to achieve its  objective. Portfolio turnover is  expected to be modest  in
relation  to comparable mutual funds. Although the Fund will invest primarily in
higher-rated fixed  income  securities  (Baa  or  better  by  Moody's  Investors
Service,  Inc.),  fixed income  securities with  ratings lower  than Baa  may be
purchased if,  in  the opinion  of  the  Investment Adviser,  the  total  return
potential  of the issue outweighs  the added risk. Such  lower rated issues will
normally constitute less than 20% of the Fund's net assets.
 
  A detailed description of  the Fund's investment  limitations is contained  in
the  Statement  of  Additional  Information.  Such  limitations  are fundamental
policies which  cannot be  changed without  the approval  of a  majority of  the
Fund's shareholders, as defined in the Statement of Additional Information.
 
MANAGEMENT OF THE FUND
 
  The  Board  of Directors  has overall  responsibility for  the Fund.  The Fund
employs Mairs  and  Power,  Inc.,  W-2062  First  National  Bank  Building,  332
Minnesota  Street, St.  Paul, Minnesota 55101,  to manage  the Fund's investment
portfolio and certain other business  affairs under a contract that  compensates
Mairs  and Power, Inc. at the rate of one-twentieth of one percent of the Fund's
month-end net asset value (0.6% annually),  computed and paid each month.  Mairs
and  Power, Inc. has managed mutual funds since 1958 and has provided investment
counsel services in St. Paul since 1931.
 
  William B. Frels, Secretary of Mairs and Power, Inc. is primarily  responsible
for  the day-to-day management  of the Fund's  portfolio. Mr. Frels  has been an
officer and director of Mairs  and Power, Inc. since  July, 1992. Prior to  that
time he was a Vice President and Senior Investment Officer for American National
Bank and Trust Company of St. Paul, Minnesota from September 1990 to June 1992.
 
  Mairs  and  Power,  Inc.  acts  as  the  Fund's  Transfer  Agent  and Dividend
Disbursing Agent  and  is  reimbursed  for  all  expenditures  incurred  in  the
discharge  of these duties. The  ratio of the transfer  agent fee to average net
assets in 1995 was 0.13%.
 
  Norwest Bank Minnesota, N. A. acts as  Custodian for the Fund pursuant to  the
terms  of a custodial agreement which must  be approved annually by the Board of
Directors. It controls all securities and  cash for the Fund, receives and  pays
for securities purchased, delivers against payment for securities sold, receives
and  collects income from investments, makes  all payments for Fund expenses and
performs other administrative services, all as directed in writing by authorized
officers of the Fund. The  ratio of the custodial fee  to average net assets  in
1995 was 0.09%.
 
  Effective  May 1, 1996 Firstar Trust  Company of Milwaukee, Wisconsin will act
as Custodian for  the Fund,  and will  assume all  duties, responsibilities  and
control pursuant to the same terms set forth above.
 
  The  ratio of the management  fee to average net assets  in 1995 was 0.6%; the
ratio of total Fund operating expenses  to average net assets ("expense  ratio")
was 1.12%. Mairs and Power, Inc. has agreed with the Fund that the expense ratio
will  not exceed the lowest expense limitation  of any state in which the Fund's
shares are sold.
 
                                       4
<PAGE>
MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE
 
1995 IN REVIEW
 
  With both stock  and bond markets  achieving near record  increases, 1995  was
almost  a  complete  reversal from  the  previous  year. The  Income  Fund fully
participated in the market strength showing a 30.0% total investment return  for
the  year after  adjustment for the  reinvestment of cash  dividends and capital
gain distributions. This compared to a return  of 37.5% for the Standard &  Poor
500,  which was the best since 1958 when a 43.4% return was realized. The Lehman
Brothers Gov't./Corp. Bond Index earned a return of 19.2% reflecting a  dramatic
decline  in interest rates (U.S. Treasury rates  fell nearly 185 basis points on
the 30 year bond and some 245 basis points on the 2 year note). The Income  Fund
also did well relative to other balanced mutual funds as evidenced by an average
return of 24.9% for a CDA/Wiesenberger universe of 253 balanced funds.
 
  The  past year could be characterized as a near perfect market environment for
financial assets. Inflation remained low as measured by a relatively modest 2.5%
increase in the Consumer  Price Index. Corporate profits  are estimated to  have
improved  at an above  average rate of  near 15%. There  was plenty of liquidity
with which to purchase financial  assets as individuals increased their  savings
rate and corporations generated excess cash flow as a result of cost cutting and
restructuring.  This surplus cash was used in  many instances to help fund stock
repurchase programs. Finally, foreign investors  are thought to have stepped  up
their  investment in U.S.  markets with the  recovery of the  Dollar relative to
other major currencies that began around mid-year. Over the course of the  year,
the  Income Fund continued to hold more than half of its assets in common stocks
(60.7% at  year  end) with  the  balance invested  in  a combination  of  bonds,
(corporate  and  Federal  Government),  convertible  bonds  and  preferred stock
(convertible and  non-convertible).  The  Fund remained  pretty  fully  invested
throughout the year with cash reserves of only 3.6% at year end.
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<CAPTION>
                                                 MPI        S&P        CPI
<S>                                           <C>        <C>        <C>
1985                                              10000      10000      10000
1986                                              11535      11870      10190
1987                                              11733      12487      10567
1988                                              13364      14560      11000
1989                                              15726      19161      11528
1990                                              15940      18548      12151
1991                                              20065      24205      12661
1992                                              21241      26069      13041
1993                                              23545      28702      13393
1994                                              23056      29075      13755
1995                                              29981      39990      14099
Average Annual Total Return
1 Year                                           5 Year    10 Year
30.04%                                           13.47%     11.60%
Past investment results should not be taken
as
necessarily representative of future
performance.
</TABLE>
 
                                       5
<PAGE>
THE FUND
 
  The   Fund  is  an  open-ended,   diversified  management  company  which  was
incorporated in Minnesota  in 1961.  The fund  has authorized  capital stock  of
10,000,000  shares, $0.10 par value per share. Each share entitles the holder to
one vote at  all meetings  of Fund shareholders  and to  participate equally  in
dividends  and  distributions declared  by the  Fund, and  in its  remaining net
assets on liquidation after satisfaction of outstanding liabilities. Fund shares
are fully paid and non-assessable  when issued, have no preemptive,  conversion,
or  cumulative  voting rights,  are  transferable without  restrictions  and are
redeemable at net asset value.
 
PURCHASING SHARES
 
  Shares of the  Fund may  be purchased,  with no  sales charge,  at the  Fund's
office  in St. Paul. Shares  are purchased at the  next-computed net asset value
after receipt and acceptance of a purchase application in proper form. Net asset
value will  be calculated  as of  the close  of trading  of the  New York  Stock
Exchange on the last business day of each week (normally a Friday), on the final
business  day of each  month, and on  any day in  which an order  to redeem Fund
shares is received  (a "special"  valuation). All subscriptions  are subject  to
acceptance  by authorized  officers of  the Fund  and are  not binding  until so
accepted. An  initial  purchase must  be  a  least $2,500  and  each  subsequent
purchase must be at least $100, although the Fund reserves the right to waive or
change  these minimums  at its  discretion. The  Fund will  not accept currency.
Stock certificates will not ordinarily be issued unless the investor requests  a
certificate  in writing. The Fund  will invest the entire  dollar amount of each
purchase order  in  full  and  fractional  Fund  shares  and,  unless  otherwise
instructed,  will reinvest all income  dividends and capital gains distributions
in additional full and fractional  shares. Investors may, however, request  that
income dividends and/or capital gains distributions be paid in cash.
 
REDEEMING SHARES
 
  Shareholders  may  redeem  for  cash  all or  a  portion  of  their  shares by
instructing the Fund at its office in  St. Paul. Shares will be redeemed at  the
net  asset value next computed after the receipt of a redemption order. Although
the net asset value of Fund shares  is normally determined only as of the  close
of  trading  on the  New York  Stock Exchange  each Friday  and at  month-end, a
special net asset value determination will be  made as of the close of New  York
Stock  Exchange trading  on any  day that  an order  for the  redemption of Fund
shares is received.  A redemption  request must be  in "good  order" before  the
proceeds can be released. This means the following will be required:
 
(a)  A letter  of instruction  or a  stock assignment  specifying the  number of
    shares or dollar amount to be redeemed,  signed by all owners of the  shares
    exactly  as  their  names  appear  in  the  Fund's  shareholder  records. If
    certificates have been issued representing shares to be redeemed, they  must
    accompany the letter.
 
(b)  A  guarantee  of the  signature  of  each owner  by  an  eligible signature
    guarantor such as a  U.S. commercial bank, trust  company, or member of  the
    New York Stock Exchange for redemption requests greater than $10,000.
 
(c)  In the case of estates, trusts, guardianships, custodianships, corporations
    and pension and profit-sharing plans,  other supporting legal documents  may
    be required.
 
(d)  A  guarantee  of the  signature  of  each owner  by  an  eligible signature
    guarantor such as a  U.S. commercial bank, trust  company, or member of  the
    New York Stock Exchange if the address of record has been changed within the
    15 days preceding any liquidation.
 
  If  the proceeds of any redemption are requested  to be sent to other than the
address of record, signature(s) on the request must be guaranteed by an eligible
signature guarantor such as a commercial bank, trust company, or a member of the
New York Stock Exchange.
 
                                       6
<PAGE>
  The Fund may  be required  to withhold  federal income tax  at a  rate of  31%
(backup  withholding)  from  dividend  payments,  distributions,  and redemption
proceeds if a  shareholder fails  to furnish  the Fund  with his  or her  social
security  or tax identification  number. The shareholder  also must certify that
the number is correct and that he  or she is not subject to backup  withholding.
The certification is included as part of the share purchase application form. If
the  shareholder  does not  have  a social  security  number, he  or  she should
indicate on the purchase form that an application to obtain a number is pending.
The Fund is required to withhold taxes if a number is not delivered to the  fund
within seven days.
 
  No  redemption request  will become  effective until  all documents  have been
received in proper form by the Fund. The shareholder should contact the Fund for
further information concerning documentation required  for a redemption of  Fund
shares.
 
  Shareholders  who have an IRA or other  retirement plan must indicate on their
redemption request whether  or not  to withhold federal  income tax.  Redemption
requests  failing  to indicate  an election  not  to have  tax withheld  will be
subject to withholding.
 
  Payment will be  made as soon  as possible, but  in no event  later than  five
business  days after receipt of a redemption  order in proper form. The right of
redemption may be suspended or the date  of payment may be postponed (1)  during
weekend  or holiday closings, or when trading is restricted as determined by the
Securities and  Exchange  Commission ("SEC"),  (2)  during any  period  when  an
emergency  exists  as determined  by the  SEC as  a  result of  which it  is not
reasonably practicable for the Fund to dispose  of securities owned by it or  to
fairly  determine the value of its net assets,  and (3) for such a period as the
SEC may  permit. A  redemption  order may  not be  canceled  or revoked  by  the
shareholder  once redemption instructions have been received and accepted by the
Fund. Since the redemption price is net asset value per share determined at  the
same  time and in the same manner as for a purchase order received at that time,
it reflects  the  market  value  of  the  Fund's  investments  at  the  time  of
redemption.  This value may be  more or less than  the price originally paid for
the shares, and the investor may realize a gain or loss on redemption.
 
DISTRIBUTIONS AND TAX CONSEQUENCES
 
  The Fund distributes all of its  net investment income to shareholders in  the
form of quarterly dividends, normally in March, June, September and December. If
net  capital gains are realized, the Fund  will distribute them near year-end in
the year in which such gains are realized. The Fund intends to comply, as it did
in 1995, with  the special provisions  of Subchapter M  of the Internal  Revenue
Code  that  relieve it  from federal  income  tax on  net investment  income and
capital gains currently distributed to  shareholders. The Internal Revenue  Code
requires  all regulated investment  companies to pay a  non deductible 4% excise
tax if at least 98% of ordinary income and 98% of capital gains are not paid out
to shareholders during the year in which  they are earned or realized. The  Fund
intends  to distribute income and capital gains in such a manner as to avoid the
imposition of this excise tax.
 
  Fund shareholders will be subject to  federal income tax at ordinary rates  on
distributions  of investment income and  short-term capital gains. Distributions
of net long-term  capital gains are  taxable to Fund  shareholders as  long-term
capital  gain regardless  of the  length of  time shares  of the  Fund are held.
Short-term capital gains are taxed at the same rate as an individual's  ordinary
income;  long-term capital gains are  taxed at a maximum  rate of 28%. Dividends
and distributions will  be taxable  whether received  in cash  or reinvested  in
additional  shares of the Fund. Shareholders will  be advised annually as to the
source of distributions for tax purposes.  Distributions may also be subject  to
state  and local taxes.  Shareholders not subject  to tax on  income will not be
required to pay tax on amounts distributed from the Fund.
 
  The Fund's dividends and distributions are paid  on a per share basis. At  the
time  of such payment, therefore, the value of each share will be reduced by the
amount of the payment. If shares are  purchased shortly before the payment of  a
dividend or a capital gains distribution, purchasers will pay the full price for
the shares and then receive some portion of the price back as a taxable dividend
or distribution.
 
                                       7
<PAGE>
  The foregoing is a general summary of current federal income tax law regarding
the Fund. Investors should consult with their own tax adviser regarding federal,
state and local tax consequences of an investment in the Fund.
 
DETERMINING NET ASSET VALUE PER SHARE
 
  The net asset value per share for purchase and redemption orders is determined
on  the  days  set  forth  under  the  paragraphs  for  "Purchasing  Shares" and
"Redeeming Shares," as of the  close of regular trading  hours on the New  Stock
Exchange  (currently 3:00  p.m., Central  time) on each  day the  New York Stock
Exchange is open for trading. As a result, shares of the Fund will not be priced
on the days which  the Exchange observes: New  Years Day, Presidents' Day,  Good
Friday,  Memorial  Day,  Independence  Day,  Labor  Day,  Thanksgiving  Day  and
Christmas Day. The net asset value per share is determined by dividing the total
market value of the Fund's investment and other assets, less any liabilities, by
the total outstanding shares of the Fund. Each security traded on one or more of
the national exchanges are valued  at its last sale price  as shown in the  Wall
Street  Journal or other recognized national financial publication on the day of
the valuation, or  if there were  no sales on  that day, the  most recent  sales
price. All other securities are valued at the mean between the bid and the asked
price.  For securities where quotations are  not readily available, or where the
last quoted price is not considered representative of the value of that security
if it were to be sold on that day, the security will be valued at fair value  as
determined in good faith by the Adviser.
 
OTHER SERVICES
 
  Shareholder  Reports  -- Shareholders  will  receive a  confirmation statement
reflecting each purchase  and redemption  of Fund  shares, as  well as  periodic
statements  detailing distributions made by the Fund. In addition, the Fund will
send shareholders quarterly  and annual reports  showing its portfolio  holdings
and will provide tax information annually.
 
  Systematic  Withdrawals  --  Shareholders  may arrange  to  have  quarterly or
monthly withdrawals of cash from an  account by sending a systematic  withdrawal
request  to  the  Fund.  Withdrawal payments  are  derived  from  liquidation of
sufficient shares from a shareholder's account to meet the designated  payments.
The  withdrawal plan may be  terminated at any time by  writing to the Fund. The
minimum investment to establish a systematic withdrawal program is $10,000.
 
  Retirement Plans  --  The  Fund  sponsors  IRA  and  Keogh  retirement  plans,
information on which is available on request from the Fund's office in St. Paul.
 
RISKS
 
  All  investments have risks.  Although the Fund cannot  eliminate all risk, it
seeks to  moderate  risk by  investing  in a  diversified  portfolio.  Long-term
investors,  for  whom  the  Fund  is  designed,  should  be  prepared  to accept
fluctuations in portfolio  value as  the Fund  seeks to  achieve its  investment
objective  of liberal income and the possibility of modest capital appreciation.
There can be no assurance, of course, that the Fund will achieve its objective.
 
                                       8
<PAGE>
                             OFFICERS AND DIRECTORS
- - - --------------------------------------------------------------------------------
 
William B. Frels ........................................ President and Director
 
George A. Mairs, III .................................... Secretary and Director
 
Peter G. Robb ...................................... Vice President and Director
 
Kathleen M. Kellerman ................................................ Treasurer
 
Litton E. S. Field .................................................... Director
 
Donald E. Garretson ................................................... Director
 
J. Thomas Simonet ..................................................... Director
 
<TABLE>
<S>                                <C>
INVESTMENT ADVISER                 CUSTODIAN
 
Mairs and Power, Inc.              Firstar Trust Company
W-2062 First National Bank         615 East Michigan Street
Building                           Milwaukee, Wisconsin 53202
332 Minnesota Street
Saint Paul, Minnesota 55101
 
TRANSFER AGENT                     INDEPENDENT AUDITORS
 
Mairs and Power, Inc.              Ernst & Young LLP
W-2062 First National Bank         1400 Pillsbury Center
Building                           200 South Sixth Street
332 Minnesota Street               Minneapolis, Minnesota
Saint Paul, Minnesota 55101        55402
</TABLE>
 
                                       9
<PAGE>
                                MAIRS AND POWER
                               INCOME FUND, INC.
                                   PROSPECTUS
 
                                 APRIL 29, 1996
<PAGE>

                          Mairs and Power Income Fund, Inc.

                         STATEMENT OF ADDITIONAL INFORMATION

                                 Dated April 29, 1996

    Mairs and Power Income Fund, Inc. (the "Fund") is a no-load mutual fund
that has as its investment objective liberal current income and the possibility
of modest long-term capital appreciation.  In seeking to accomplish its
objective, the Fund invests in a combination of equity, fixed income and
convertible securities.

    This Statement of Additional Information is not a prospectus, but contains
information in addition to and more detailed than what is contained in the
Fund's Prospectus.  It should be read in conjunction with the Prospectus, dated
April 29, 1996, which has been filed with the Securities and Exchange Commission
and can be obtained, without charge, by calling or writing the Fund.  This
Statement of Additional Information has been incorporated by reference into the
Prospectus.  The address of the Fund is W-2062 First National Bank Building, 332
Minnesota Street, St. Paul, MN 55101 and its telephone number is (612) 222-8478.

                                  Table of Contents


Investment Objective and Policies............................................  5

Investment Limitations.......................................................  5

Portfolio Turnover...........................................................  6

Purchasing and Redeeming Shares..............................................  6

Principal Holders of Securities..............................................  6

Officers and Directors.......................................................  7

Investment Adviser...........................................................  8

Transfer Agent and Custodian.................................................  9

Portfolio Transactions.......................................................  9

Financial Statements......................................................... 10


                                          4

<PAGE>

INVESTMENT OBJECTIVE AND POLICIES

    As discussed on page 4 of the Fund's Prospectus, the Fund will normally
invest in a diversified list of securities, including bonds, preferred and
common stocks and securities convertible into common stock.  The percentage of
the Fund's assets that may be held in each category will vary in accordance with
the judgment of the Fund's investment adviser, Mairs and Power, Inc.  While
equities and securities convertible into equities are expected to remain the
dominant holdings in the Fund, the Adviser may, in its discretion, alter the
relative weightings in response to market conditions.

INVESTMENT LIMITATIONS

    The Fund is subject to the following restrictions which may not be changed
without the approval of a majority of the shareholders of the Fund.  The vote of
a majority of the shareholders means the vote, at the annual or a special
meeting of the security holders, of holders representing (a) 67% or more of the
voting securities present at such meeting, if the holders of more than 50% of
the outstanding voting securities are present or represented by proxy; or (b)
more than 50% of the outstanding voting securities, whichever is less.  The Fund
may not:

    (1)  Purchase securities of any issuer if as a result, (a) more than 5% of
         the value of the total assets of the Fund would then be invested in
         the securities of a single issuer (other than U.S. Government
         obligations), or (b) more than 10% of any class of securities, or more
         than 10% of the outstanding voting securities, of the issuer would
         then be held by the Fund;

    (2)  Purchase securities of other investment companies if as a result more
         than 5% of the Fund's total assets would then be (a) invested in the
         securities of that investment company, or (b) more than 10% of the
         Fund's assets would then be invested in securities of all investment
         companies;

    (3)  Concentrate more than 20% of its investments in a particular industry;

    (4)  Purchase or sell real estate, real estate investment trusts, or other
         interests in real estate which are not readily marketable;

    (5)  Write, purchase or sell puts, calls, or combinations thereof;

    (6)  Make loans (although it may acquire portions of an issuer's publicly
         distributed securities);

    (7)  Purchase securities on margin or sell short;

    (8)  Borrow money, except that the Fund may borrow from banks up to 5% of
         its total assets to pay capital gains distributions, to pay income
         dividends, or to relieve an extraordinary or emergency situation, but
         not for investment purposes;


                                          5

<PAGE>

    (9)  Mortgage, pledge, hypothecate, or in any manner transfer, as security
         for indebtedness, any securities owned or held by the Fund;

    (10) Participate on a joint or a joint and several basis in any trading
         account in securities;

    (11) Invest in companies for the purpose of exercising control of
         management;

    (12) Act as an underwriter of securities of other issuers;

    (13) Purchase or retain the securities of any issuer if officers and
         directors of the Fund or its investment adviser who own individually
         more than one-half of one percent of the securities of such issuer,
         together own more than 5% of the securities of such issuer;

    (14) Purchase or sell commodities or commodity contracts in the ordinary
         course of its business;

    (15) Purchase or sell "restricted securities" in such a way as to become an
         "underwriter" within the meaning of that term as used in the
         Securities Act of 1933.

PORTFOLIO TURNOVER

    The Fund anticipates that its annual portfolio turnover rate will not
exceed 50%.  The Fund, however, has not placed any limit on its rate of
portfolio turnover and securities may be sold without regard to the time they
have been held when in the opinion of the Investment Adviser investment
considerations warrant such action.  Portfolio turnover rate is calculated by
dividing the lesser of the Fund's annual sales or purchases of portfolio
securities (exclusive of securities with maturities of one year or less at the
time the Fund acquired them) by the monthly average value of the securities in
the Fund's portfolio during the year.

PURCHASING AND REDEEMING SHARES

    The purchase and redemption of Mairs and Power Income Fund, Inc. shares are
subject to the procedures described on page 7 of the Fund's Prospectus, which is
incorporated herein by reference.

PRINCIPAL HOLDERS OF SECURITIES

    As of March 31, 1996, the only shareholder holding more than 5% of the
Fund's outstanding shares was Smyth Profit Sharing and Savings Plan, St. Paul,
MN (20,531 shares, 7.8%).


                                          6

<PAGE>

OFFICERS AND DIRECTORS

    The Officers and Directors of the Fund and their principal occupations for
the last five years are set forth below.  Unless otherwise noted, the address
for each Director and Officer is 332 Minnesota Street, W-2062 First National
Bank Bldg., St. Paul, MN  55101.


                     Position(s) Held     Principal Occupation(s) During
Name and Address     With Registrant      Past 5 Years
- - - ----------------     ----------------     -------------------------------------
William B. Frels*     President and       Vice President and Secretary of the
                      Director            Investment Adviser (July 1992 to
                                          Present); Vice President and Senior
                                          Investment Officer, American National
                                          Bank and Trust Company of St. Paul,
                                          MN (September 1990 to June 1992)

George A. Mairs, III*  Secretary and      President of the Investment
                      Director            Adviser

Peter G. Robb*        Vice President      Vice President of the Investment
                      and Director        Adviser (June 1994 to Present); Vice
                                          President and Portfolio Manager,
                                          First Trust N.A., St. Paul, MN (June
                                          1986 to April 1994)

Kathleen M. Kellerman Treasurer           Treasurer of the Investment Adviser
                                          (June 1993 to Present); Office
                                          Manager of the Investment Adviser

Litton E.S. Field     Director            Chairman, T.C. Field & Co. Insurance
530 North Robert Street                   Agency
St. Paul, MN  55101

Donald E. Garretson   Director            Retired Vice President, 3M Company
709 Linwood Avenue
St. Paul, MN  55105

J. Thomas Simonet     Director            Retired Chief Executive Officer,
315 Stonebridge Blvd.                     First Trust Company
St. Paul, MN  55105

*Interested person of the Fund, as defined in the Investment Company Act of
1940.


                                          7

<PAGE>

     All of the above listed persons serve in the same officer and/or director
capacities with Mairs and Power Growth Fund, Inc., an open-end investment
company which also retains Mairs and Power, Inc. as its investment adviser,
except that Mr. Mairs is President and Mr. Frels is Secretary of that fund.

     The Fund's non-interested Directors are members of the Audit Committee
which makes recommendations to the Board regarding the selection of auditors and
confers with the auditors regarding the scope and results of the annual audit.
The Fund does not pay any remuneration to its officers and Directors other than
fees to Directors who are not officers, directors, employees or holders of 5% or
more of the outstanding voting securities of the Fund's Investment Adviser,
which totaled $4,650 in 1995.  As of March 31, 1996, the Directors and Officers
of the Fund, as a group, and their spouses and minor children owned beneficially
5,829 shares, or 2.2% of the Fund.

INVESTMENT ADVISER

     Mairs and Power, Inc., a Minnesota corporation, is the Investment Adviser
of the Fund.  Mairs and Power, Inc. shareholders, all of whom are officers and
directors of the Fund, along with their percentage ownership positions in Mairs
and Power, Inc., are listed below:

                    George A. Mairs, III     54.9%
                    William B. Frels         31.9%
                    Peter G. Robb            11.8%
                    Kathleen M. Kellerman     1.4%

     Mairs and Power, Inc. has furnished continuous investment supervision to
the Fund since 1961.  Mairs and Power, Inc. currently provides similar services
to one other mutual fund, Mairs and Power Growth Fund, Inc., net assets of which
as of December 31, 1995 were $70,536,880.

     Mairs and Power, Inc. serves as Investment Adviser to the Fund under the
terms of an Investment Advisory Agreement dated March 20, 1972.  The Investment
Advisory Agreement must be approved annually by the Board of Directors of the
Fund, including a majority of those directors who are not parties to such
contract or "interested persons" of any such party as defined in the Investment
Company Act of 1940, by vote cast in person at a meeting called for such
purpose.  The Agreement may be terminated at any time, without penalty, on sixty
days' written notice by the Fund's Board of Directors, by the holders of a
majority of the Fund's outstanding voting securities or by the Investment
Adviser.  The Agreement automatically terminates in the event of its assignment
(as defined in the Investment Company Act of 1940 and the rules thereunder).

     As compensation for its services to the Fund, the Investment Adviser
receives monthly compensation at the rate of one-twentieth of one percent of
month-end net asset value (0.6% annually), computed and paid each month.  The
ratio of the management fee to average net assets in 1995 was 0.6%; the ratio of
total expenses to average net assets was 1.12%.  Mairs and Power, Inc. has
agreed with


                                          8


<PAGE>

the Fund that the expense ratio will not exceed the expense limitation of any
state in which the Fund's share are sold.

     Advisory fees paid by the Fund to Mairs and Power, Inc. amounted to $90,626
in 1995, $81,084 in 1994 and $78,041 in 1993.  Under the terms of the Investment
Advisory Agreement, the Investment Adviser agrees to render research,
statistical and advisory services to the Fund, pay for office rental, executive
salaries and executive expenses and pay all expenses related to the distribution
and sale of Fund shares.  All other expenses, such as brokerage commissions,
fees charged by the Securities and Exchange Commission, custodian and transfer
agent fees, legal and auditing fees, taxes, premiums on fidelity bonds,
supplies, and all other miscellaneous expenses are borne by the Fund.  No
compensation was paid to any other director or officer of the Fund.

TRANSFER AGENT AND CUSTODIAN

     Mairs and Power, Inc. also acts as the Fund's Transfer Agent and Dividend
Disbursing Agent and is reimbursed for all expenditures incurred in the
discharge of these responsibilities.  Reimbursements amounted to $18,833 in
1995, $19,196 in 1994 and $12,971 in 1993.

     Custodial services for the Fund are performed by Norwest Bank Minnesota,
N.A., Sixth and Marquette, Minneapolis, MN 55479, pursuant to the terms of a
Custodial Agreement reviewed annually by the Board of Directors.  As Custodian,
Norwest Bank Minnesota, N.A. controls all securities and cash for the Fund,
receives and pays for securities purchased, delivers against payment for
securities sold, receives and collects income from investments, makes all
payments for Fund expenses and performs other administrative services, as
directed in writing by authorized officers of the Fund.  For these services,
Norwest Bank Minnesota, N.A. received $14,100 in 1995, $15,287 in 1994 and
$14,957 in 1993.

    Effective May 1, 1996 Firstar Trust Company of Milwaukee, WI will act as
Custodian for the Fund, and will assume all duties, responsibilities and control
pursuant to the same terms as set forth above.

PORTFOLIO TRANSACTIONS

     Subject to policies established by the Board of Directors of the Fund, the
Investment Adviser is responsible for the Fund's portfolio decisions and the
placing of orders to effect the Fund's portfolio transactions.  With respect to
such transactions, the Investment Adviser seeks to obtain the best net results
for the Fund taking into account such factors as price (including the applicable
brokerage commission or dealer spread), size of order, difficulty of execution
and operational facilities of the firm involved.  While the Investment Adviser
generally seeks reasonably competitive commission rates, the Fund will not
necessarily be paying the lowest commission or spread available.  The Fund has
no obligation to deal with any broker or dealer in the execution of its
portfolio transactions, and there is no affiliation


                                          9

<PAGE>

between the Fund's officers or directors, or its Investment Adviser, and any
broker-dealer or affiliated persons of any broker-dealer who executes
transactions for the Fund.

     Investment decisions for the Fund are made independently from those of
Mairs and Power Growth Fund, Inc., also managed by Mairs and Power, Inc.  When
these funds are simultaneously engaged in the purchase or sale of the same
securities the transactions are averaged as to price and allocated as to amount
in accordance with a formula deemed equitable to each fund.  In some cases this
system may adversely affect the price paid or received by the Fund, or the size
of the position obtainable for the Fund.

     Decisions with respect to allocations of portfolio brokerage will be made
by the Investment Adviser.  Portfolio transactions are normally placed with
broker-dealers which provide the Fund's Investment Adviser with research and
statistical assistance.  Recognizing the value of these factors, the Fund may
pay brokerage commissions in excess of those which another broker might charge
for effecting the same transaction, even though the research services furnished
by brokers through whom the Fund effects securities transactions may benefit
other clients of Mairs and Power, Inc.

     The Fund has an investment in the securities of Merrill Lynch & Co., Inc.,
an investment company; at the end of 1995, the value of this investment was
$306,000 or 1.8% of the Fund's net assets.

     For the year 1995, the Fund paid $2,756 in brokerage fees on purchase and
sale of portfolio securities.  All of this amount was paid to brokers or dealers
who supplied research services to the Investment Adviser.  Total brokerage fees
for 1994 and 1993 amounted to $6,927 and $7,571, respectively.

FINANCIAL STATEMENTS

     The Fund's financial statements, including a listing of portfolio
securities as of December 31, 1995, are included in the Fund's Annual Report to
Shareholders for the year ended December 31, 1995 and are incorporated herein by
reference.  The financial statements have been audited by Ernst & Young LLP,
independent auditors, 1400 Pillsbury Center, 200 South Sixth Street,
Minneapolis, Minnesota 55402, as set forth in their report appearing in the
Annual Report and incorporated herein by reference.  Additional copies of the
Annual Report may be obtained, without charge, by writing or calling the Fund.


                                          10

<PAGE>

PART C.   OTHER INFORMATION

Item 24.  FINANCIAL STATEMENTS AND EXHIBITS

          (a)  Financial Statements

          The financial statements identified with an asterisk (*) in the index
          below, together with the report of Ernst & Young LLP dated January 12,
          1996, appearing on pages 5  to 13 of the 1995 Annual Report to
          Shareholders are incorporated by reference.  With the exception of the
          preceding information, the Annual Report is not incorporated herein by
          reference and is not deemed filed as part of this Form N-1A.

                                                     Page Number In:

                                               Prospectus          Annual Report
                                               ----------          -------------

          *Financial Highlights for each of
          the ten years in the period ended
          December 31, 1995                      3                   5

          *Statement of Net Assets at
          December 31, 1995                                        6-8

          *Statement of Operations for the
          year ended December 31, 1995                               9

          *Statement of Changes in Net Assets
          for the years ended December 31,
          1995 and 1994                                             10

          *Notes to Financial Statements                            11

          Report of Independent Auditors                            12

Schedules other than Schedule I - Investments in Securities of Unaffiliated
Issuers, which is included in the Statement of Net Assets, are omitted for the
reason that they are not required or are not applicable, or the required
information is shown in the financial statements or notes thereto.

     (b)  Exhibits

          1.   Articles of Incorporation.  Incorporated by reference to
               registrant's Registration Statement on Form N-1A, No. 2-18269,
               Post-Effective Amendment No. 33, filed on April 9, 1990.

          2.   By-laws.  Incorporated by reference to registrant's Registration
               Statement on Form N-1A, No. 2-18269, Post-Effective Amendment No.
               33, filed on April 9, 1990.


                                          11

<PAGE>

          3.   None.

          4.   Articles of Incorporation, Article V.  Incorporated by reference
               to registrant's Registration Statement on Form N-1A, No. 2-18269,
               Post-Effective Amendment No. 33, filed on April 9, 1990.

          5.   Investment Advisory Contract.  Incorporated by reference to
               registrant's Registration Statement on Form N-1, No. 2-18269,
               Post-Effective Amendment No. 14, filed April, 1972.

          6.   None.

          7.   None.

          8.   Custodian Agreement entered into between the Fund and Firstar
               Trust Company on April 15, 1996.

          9.   None.

          10.  None.

          11.  Consent of Independent Auditors

          12.  Financial Statements contained in 1995 Annual Report to
               Shareholders (See Index, Item 24 (a), Part C, Other Information).

          13.  None.

          14.  Mairs and Power, Inc. Prototype Self-Employed Money Purchase and
               Pension Plan, Trust, Summary Plan Description, Adoption
               Agreements Nos. 001 and 002, and Custody Agreement.  Incorporated
               by reference to registrant's Registration Statement on Forms
               N-1A.

          15.  None.

          16.  None.

          17.  Financial Data Schedule.

          18.  None.


Item 25.  PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH REGISTRANT

          Inapplicable


                                          12

<PAGE>

Item 26.  NUMBER OF HOLDERS OF SECURITIES

          Title of Class  (1)                Number of Record Holders   (2)
          --------------                     -------------------------

          Capital Stock, 10,000,000 shares                    353
          Par Value ten cents ($.10)                  (As of March 31, 1996)

Item 27.  INDEMNIFICATION

          The Fund's Amended and Restated Articles of Incorporation state that a
          director of the corporation shall have no personal liability to the
          corporation or its shareholders for monetary damages for breach of
          fiduciary duty as a director to the full extent such immunity is
          permitted from time to time under the Minnesota Business Corporation
          Act, as now enacted or hereafter amended, except as prohibited by the
          Investment Company Act of 1940, as amended.

          Section 302A.521 of the Minnesota Business Corporation Act provides
          that a Minnesota corporation shall indemnify any director, officer, or
          employee of the corporation made or threatened to be made a party to a
          proceeding, by reason of the former or present official capacity of
          the person, against judgments, penalties, fines, settlements and
          reasonable expenses incurred by the person in connection with the
          proceeding, provided that certain statutory standards are met.
          "Proceeding" means a threatened, pending or completed civil, criminal,
          administrative, arbitration or investigative proceeding, including one
          by or in the right of the corporation.  Indemnification is required
          under Section 302A.521 only if the person (i) has not been indemnified
          by any other organization with respect to the same acts or omissions,
          (ii) acted in good faith, (iii) received no improper personal benefit,
          (iv) in the case of a criminal proceeding, had no reasonable cause to
          believe the conduct was unlawful, and (v) reasonably believed that the
          conduct was in the best interests of the corporation.

Item 28.  BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER

          Inapplicable

Item 29.  PRINCIPAL UNDERWRITERS

          Inapplicable

Item 30.  LOCATION OF ACCOUNTS AND RECORDS

          Custodian:          Firstar Trust Company
                              615 East Michigan Street
                              Milwaukee, WI  53202


                                          13

<PAGE>

          Transfer Agent:          Mairs and Power, Inc.
                                   W-2062 First National Bank Bldg.
                                   332 Minnesota Street
                                   St. Paul, MN  55101

          Investment Adviser:      Mairs and Power, Inc.
                                   W-2062 First National Bank Bldg.
                                   332 Minnesota Street
                                   St. Paul, MN  55101

Item 31.  MANAGEMENT SERVICES

          Inapplicable

Item 32.  UNDERTAKINGS

          Inapplicable


                                          14

<PAGE>

                                      SIGNATURES


Pursuant to the requirements of the Securities Act of 1933 and the Investment
Company Act of 1940, the Registrant certifies that it meets all of the
requirements for effectiveness of the Registration Statement pursuant to Rule
485 (b) under the Securities Act of 1933 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of St. Paul, and State of Minnesota on the 29th day of
April 1996.

                                        MAIRS AND POWER INCOME FUND, INC.


                                        /s/ William B. Frels
                                        ----------------------------------------
                                        William B. Frels, President

     Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed below by the following persons in the
capacities and on the dates indicated.



/s/ William B. Frels          President and Director
- - - -------------------------     (Principal Executive Officer)      April 29, 1995
William B. Frels


/s/ George A. Mairs, III      Secretary and Director
- - - -------------------------     (Principal Financial and
George A. Mairs, III          Accounting Officer)                April 29, 1995


/s/ Peter G. Robb             Vice-President and Director
- - - -------------------------                                        April 29, 1995
Peter G. Robb


/s/ Litton E.S. Field         Director
- - - -------------------------                                        April 29, 1995
Litton E.S. Field


/s/ Donald E. Garretson       Director
- - - -------------------------                                        April 29, 1995
Donald E. Garretson


/s/ J. Thomas Simonet         Director
- - - -------------------------                                        April 29, 1995
J. Thomas Simonet


                                          15

<PAGE>

                                    EXHIBIT INDEX


1-7       Not filed herewith.

8         Custodian Agreement.

9-10      Not filed herewith.

11        Consent of Independent Auditors.

12        Financial Statements contained in 1995 Annual Report to Shareholders
          (See Index Under Item 24 (a) in Part C).

13-16     Not filed herewith.

17        Financial Data Schedule.

18        Not filed herewith.


                                          16


<PAGE>

                               CUSTODIAN AGREEMENT


        THIS AGREEMENT made on April 15, 1996, between Mairs and Power Income
Fund, Inc., a Minnesota corporation (hereinafter called the ("Fund"), and
FIRSTAR TRUST COMPANY, a corporation organized under the laws of the State of
Wisconsin (hereinafter called "Custodian"),

        WHEREAS, the Fund desires that its securities and cash shall be
hereafter held and administered by Custodian pursuant to the terms of this
Agreement;

        NOW, THEREFORE, in consideration of the mutual agreements herein made,
the Fund and Custodian agree as follows:

1. DEFINITIONS

        The word "securities" as used herein includes stocks, shares, bonds,
debentures, notes, mortgages or other obligations, and any certificates,
receipts, warrants or other instruments representing rights to receive, purchase
or subscribe for the same, or evidencing or representing any other rights or
interests therein, or in any property or assets.

        The words "officers' certificate" shall mean a request or direction or
certification in writing signed in the name of the Fund by any two of the
President, a Vice President, the Secretary and the Treasurer of the Fund, or any
other persons duly authorized to sign by the Board of Directors.

        The word "Board" shall mean Board of  Directors of  Mairs and Power
Growth Fund, Inc.

2. NAMES, TITLES, AND SIGNATURES OF THE FUND'S OFFICERS

        An officer of the Fund will certify to Custodian the names and
signatures of those persons authorized to sign the officers' certificates
described in Section 1 hereof, and the names of the members of the Board of
Directors, together with any changes which may occur from time to time.

3. RECEIPT AND DISBURSEMENT OF MONEY

        A.   Custodian shall open and maintain a separate account or accounts
in the name of the Fund, subject only to draft or order by Custodian acting
pursuant to the terms of this Agreement.  Custodian shall hold in such account
or accounts, subject to the provisions hereof, all cash received by it from or
for the account of the Fund.  Custodian shall make payments of cash to, or for
the account of, the Fund from such cash only:


                                      - 1 -
<PAGE>


        (a) for the purchase of securities for the portfolio of the Fund upon
            the delivery of such securities to Custodian, registered in the
            name of the Fund or of the nominee of Custodian referred to in
            Section 7 or in proper form for transfer;

        (b) for the purchase or redemption of shares of the common stock of the
            Fund upon delivery thereof to Custodian, or upon proper
            instructions from the Mairs and Power Growth Fund, Inc.;

        (c) for the payment of interest, dividends, taxes, investment adviser's
            fees or operating expenses (including, without limitation thereto,
            fees for legal, accounting, auditing and custodian services and
            expenses for printing and postage);

        (d) for payments in connection with the conversion, exchange or
            surrender of securities owned or subscribed to by the Fund held by
            or to be delivered to Custodian; or

        (e) for other proper corporate purposes certified by resolution of the
            Board of Directors of the Fund.

        Before making any such payment, Custodian shall receive (and may rely
upon) an officers' certificate requesting such payment and stating that it is
for a purpose permitted under the terms of items (a), (b), (c), or (d) of this
Subsection A, and also, in respect of item (e), upon receipt of an officers'
certificate specifying the amount of such payment, setting forth the purpose for
which such payment is to be made, declaring such purpose to be a proper
corporate purpose, and naming the person or persons to whom such payment is to
be made, provided, however, that an officers' certificate need not precede the
disbursement of cash for the purpose of purchasing a money market instrument, or
any other security with same or next-day settlement, if the President, a Vice
President, the Secretary or the Treasurer of the Fund issues appropriate oral or
facsimile instructions to Custodian and an appropriate officers' certificate is
received by Custodian within two business days thereafter.

        B.   Custodian is hereby authorized to endorse and collect all checks,
drafts or other orders for the payment of money received by Custodian for the
account of the Fund.

        C.   Custodian shall, upon receipt of proper instructions, make federal
funds available to the Fund as of specified times agreed upon from time to time
by the Fund and the custodian in the amount of checks received in payment for
shares of the Fund which are deposited into the Fund's account.


                                      - 2 -
<PAGE>


4.  SEGREGATED ACCOUNTS

Upon receipt of proper instructions, the Custodian shall establish and maintain
a segregated account(s) for and on behalf of the portfolio, into which
account(s) may be transferred cash and/or securities.

5.  TRANSFER, EXCHANGE, REDELIVERY, ETC. OF SECURITIES

        Custodian shall have sole power to release or deliver any securities of
the Fund held by it pursuant to this Agreement.  Custodian agrees to transfer,
exchange or deliver securities held by it hereunder only:

        (a) for sales of such securities for the account of the Fund upon
            receipt by Custodian of payment therefore;

        (b) when such securities are called, redeemed or retired or otherwise
            become payable;

        (c) for examination by any broker selling any such securities in
            accordance with "street delivery" custom;

        (d) in exchange for, or upon conversion into, other securities alone or
            other securities and cash whether pursuant to any plan of merger,
            consolidation, reorganization, recapitalization or readjustment, or
            otherwise;

        (e) upon conversion of such securities pursuant to their terms into
            other securities;

        (f) upon exercise of subscription, purchase or other similar rights
            represented by such securities;

        (g) for the purpose of exchanging interim receipts or temporary
            securities for definitive securities;

        (h) for the purpose of redeeming in kind shares of common stock of the
            Fund upon delivery thereof to Custodian; or

        (i)     for other proper corporate purposes.

        As to any deliveries made by Custodian pursuant to items (a), (b), (d),
(e), (f), and (g), securities or cash receivable in exchange therefore shall be
deliverable to Custodian.

        Before making any such transfer, exchange or delivery, Custodian shall
receive (and may rely upon) an officers' certificate requesting such transfer,
exchange or delivery,


                                      - 3 -
<PAGE>


and stating that it is for a purpose permitted under the terms of items (a),
(b), (c), (d), (e), (f), (g), or (h) of this Section 5 and also, in respect of
item (i), upon receipt of an officers' certificate specifying the securities to
be delivered, setting forth the purpose for which such delivery is to be made,
declaring such purpose to be a proper corporate purpose, and naming the person
or persons to whom delivery of such securities shall be made, provided, however,
that an officers' certificate need not precede any such transfer, exchange or
delivery of a money market instrument, or any other security with same or
next-day settlement, if the President, a Vice President, the Secretary or the
Treasurer of the Fund issues appropriate oral or facsimile instructions to
Custodian and an appropriate officers' certificate is received by Custodian
within two business days thereafter.

6.  CUSTODIAN'S ACTS WITHOUT INSTRUCTIONS

        Unless and until Custodian receives an officers' certificate to the
contrary, Custodian shall:  (a) present for payment all coupons and other income
items held by it for the account of the Fund, which call for payment upon
presentation and hold the cash received by it upon such payment for the account
of the Fund; (b) collect interest and cash dividends received, with notice to
the Fund, for the account of the Fund; (c) hold for the account of the Fund
hereunder all stock dividends, rights and similar securities issued with respect
to any securities held by it hereunder; and (d) execute, as agent on behalf of
the Fund, all necessary ownership certificates required by the Internal Revenue
Code or the Income Tax Regulations of the United States Treasury Department or
under the laws of any state now or hereafter in effect, inserting the Fund's
name on such certificates as the owner of the securities covered thereby, to the
extent it may lawfully do so.

7.  REGISTRATION OF SECURITIES

        Except as otherwise directed by an officers' certificate, Custodian
shall register all securities, except such as are in bearer form, in the name of
a registered nominee of Custodian as defined in the Internal Revenue Code and
any Regulations of the Treasury Department issued hereunder or in any provision
of any subsequent federal tax law exempting such transaction from liability for
stock transfer taxes, and shall execute and deliver all such certificates in
connection therewith as may be required by such laws or regulations or under the
laws of any state.  Custodian shall use its best efforts to the end that the
specific securities held by it hereunder shall be at all times identifiable in
its records.

        The Fund shall from time to time furnish to Custodian appropriate
instruments to enable Custodian to hold or deliver in proper form for transfer,
or to register in the name of its registered nominee, any securities which it
may hold for the account of the Fund and which may from time to time be
registered in the name of the Fund.


                                      - 4 -
<PAGE>


8.  VOTING AND OTHER ACTION

        Neither Custodian nor any nominee of Custodian shall vote any of the
securities held hereunder by or for the account of the Fund, except in
accordance with the instructions contained in an officers' certificate.
Custodian shall deliver, or cause to be executed and delivered, to the
Corporation all notices, proxies and proxy soliciting materials with relation to
such securities, such proxies to be executed by the registered holder of such
securities (if registered otherwise than in the name of the Fund), but without
indicating the manner in which such proxies are to be voted.

9.  TRANSFER TAX AND OTHER DISBURSEMENTS

        The Fund shall pay or reimburse Custodian from time to time for any
transfer taxes payable upon transfers of securities made hereunder, and for all
other necessary and proper disbursements and expenses made or incurred by
Custodian in the performance of this Agreement.

        Custodian shall execute and deliver such certificates in connection
with securities delivered to it or by it under this Agreement as may be required
under the provisions of the Internal Revenue Code and any Regulations of the
Treasury Department issued thereunder, or under the laws of any state, to exempt
from taxation any exemptable transfers and/or deliveries of any such securities.

10. CONCERNING CUSTODIAN

        Custodian shall be paid as compensation for its services pursuant to
this Agreement such compensation as may from time to time be agreed upon in
writing between the two parties.  Until modified in writing, such compensation
shall be as set forth in Exhibit A attached hereto.  If the Fund terminates this
Agreement prior to the first anniversary of this Agreement, the Fund agrees to
reimburse Custodian for the difference between the standard fee schedule and the
discounted fee schedule agreed to between the parties.

        Custodian shall exercise reasonable care in the performance of its
duties under this Agreement.  Custodian shall not be liable for any error of
judgment or mistake of law or for any loss suffered by the Fund in connection
with matters to which this Agreement relates, including losses resulting from
mechanical breakdowns or the failure of communication or power supplies beyond
Custodian's control, except a loss resulting from Custodian's refusal or failure
to comply with the terms of this Agreement or from bad faith, negligence, or
willful misconduct on its part in the performance of its duties under this
Agreement.  Notwithstanding any other provision of this Agreement, the Fund
shall indemnify and hold harmless Custodian from and against any and all claims,
demands, losses, expenses, and liabilities (whether with or without basis in
fact or law) of any and every nature (including reasonable attorneys' fees)
which Custodian may sustain or incur or which may be asserted against Custodian
by any person arising out of any action taken or omitted


                                      - 5 -
<PAGE>


to be taken by it in performing the services hereunder (i) in accordance with
the foregoing standards, or (ii) in reliance upon any written or oral
instruction provided to Custodian by any duly authorized officer of the Fund,
such duly authorized officer to be included in a list of authorized officers
furnished to Custodian and as amended from time to time in writing by resolution
of the Board of Directors of the Fund.

        In the event of a mechanical breakdown or failure of communication or
power supplies beyond its control, Custodian shall take all reasonable steps to
minimize service interruptions for any period that such interruption continues
beyond Custodian's control.  Custodian will make every reasonable effort to
restore any lost or damaged data and correct any errors resulting from such a
breakdown at the expense of Custodian.  Custodian agrees that it shall, at all
times, have reasonable contingency plans with appropriate parties, making
reasonable provision for emergency use of electrical data processing equipment
to the extent appropriate equipment is available.  Representatives of the Fund
shall be entitled to inspect Custodian's premises and operating capabilities at
any time during regular business hours of Custodian, upon reasonable notice to
Custodian.

        Regardless of the above, Custodian reserves the right to reprocess and
correct administrative errors at its own expense.

        In order that the indemnification provisions contained in this section
shall apply, it is understood that if in any case the Fund may be asked to
indemnify or hold Custodian harmless, the Fund shall be fully and promptly
advised of all pertinent facts concerning the situation in question, and it is
further understood that Custodian will use all reasonable care to notify the
Fund promptly concerning any situation which presents or appears likely to
present the probability of such a claim for indemnification against the Fund.
The Fund shall have the option to defend Custodian against any claim which may
be the subject of this indemnification.  In the event that the Fund so elects,
it will so notify Custodian and thereupon the Fund shall take over complete
defense of the claim, and Custodian shall in such situation initiate no further
legal or other expenses for which it shall seek indemnification under this
section.  Custodian shall in no case confess any claim or make any compromise in
any case in which the Fund will be asked to indemnify Custodian except with the
Fund's prior written consent.

        Custodian shall indemnify and hold the Fund harmless from and against
any and all claims, demands, losses, expenses, and liabilities (whether with or
without basis in fact or law) of any and every nature (including reasonable
attorneys' fees) which may be asserted against the Fund by any person arising
out of any action taken or omitted to be taken by Custodian as a result of
Custodian's refusal or failure to comply with the terms of this Agreement, its
bad faith, negligence, or willful misconduct.


                                      - 6 -
<PAGE>


12. SUBCUSTODIANS

        Custodian is hereby authorized to engage another bank (as defined in
Section 2.5 of the Investment Company Act of 1940) or trust company as a
Subcustodian for all or any part of the Fund's assets, so long as any such bank
or trust company is a bank or trust company organized under the laws of any
state of the United States, having an aggregate capital, surplus and undivided
profit, as shown by its last published report, of not less than Two Million
Dollars ($2,000,000) and provided further that, if the Custodian utilizes the
services of a Subcustodian, the Custodian shall remain fully liable and
responsible for any losses caused to the Fund by the Subcustodian as fully as if
the Custodian was directly responsible for any such losses under the terms of
the Custodian Agreement.

        Notwithstanding anything contained herein, if the Fund requires the
Custodian to engage specific Subcustodians for the safekeeping and/or clearing
of assets, the Fund agrees to indemnify and hold harmless Custodian from all
claims, expenses and liabilities incurred or assessed against it in connection
with the use of such Subcustodian in regard to the Fund's assets, except as may
arise from its own negligent action, negligent failure to act or willful
misconduct.

13. REPORTS BY CUSTODIAN

        Custodian shall furnish the Fund periodically as agreed upon with a
statement summarizing all transactions and entries for the account of Fund.
Custodian shall furnish to the Fund, at the end of every month, a list of the
portfolio securities showing the aggregate cost of each issue.  The books and
records of Custodian pertaining to its actions under this Agreement shall be
open to inspection and audit at reasonable times by officers of, and of auditors
employed by, the Fund.

14. TERMINATION OR ASSIGNMENT

        This Agreement may be terminated by the Fund, or by Custodian, on sixty
(60) days notice, given in writing and sent by registered mail to Custodian at
P.O. Box 2054, Milwaukee, Wisconsin 53201, or to the Fund at W-2062 First
National Bank Building, 332 Minnesota Street, St. Paul, Minnesota  55101, as the
case may be.  Upon any termination of this Agreement, pending appointment of a
successor to Custodian or a vote of the shareholders of the Fund to dissolve or
to function without a custodian of its cash, securities and other property,
Custodian shall not deliver cash, securities or other property of the Fund to
the Fund, but may deliver them to a bank or trust company of its own selection,
having an aggregate capital, surplus and undivided profits, as shown by its last
published report of not less than Two Million Dollars ($2,000,000) as a
Custodian for the Fund to be held under terms similar to those of this
Agreement, provided, however, that Custodian shall not be required to make any
such delivery or payment until full payment shall have been made by the Fund of
all liabilities constituting a charge on or against the properties then held by
Custodian or on or against Custodian, and until full payment shall have been
made to


                                      - 7 -
<PAGE>


Custodian of all its fees, compensation, costs and expenses, subject to the
provisions of Section 10 of this Agreement.

        This Agreement may not be assigned by Custodian without the consent of
the Fund, authorized or approved by a resolution of its Board of Directors.

15. DEPOSITS OF SECURITIES IN SECURITIES DEPOSITORIES

        No provision of this Agreement shall be deemed to prevent the use by
Custodian of a central securities clearing agency or securities depository,
provided, however, that Custodian and the central securities clearing agency or
securities depository meet all applicable federal and state laws and
regulations, and the Board of Directors of the Fund approves by resolution the
use of such central securities clearing agency or securities depository.

16. RECORDS

        To the extent that Custodian in any capacity prepares or maintains any
records required to be maintained and preserved by the Fund pursuant to the
provisions of the Investment Company Act of 1940, as amended, or the rules and
regulations promulgated thereunder, Custodian agrees to make any such records
available to the Fund upon request and to preserve such records for the periods
prescribed in Rule 31a-2 under the Investment Company Act of 1940, as amended.

        IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed and their respective corporate seals to be affixed hereto as of the
date first above-written by their respective officers thereunto duly authorized.

Executed in several counterparts, each of which is an original.

Attest:                              FIRSTAR TRUST COMPANY



                                     By
- - - --------------------------------        ----------------------------
Assistant Secretary                               Vice President

Attest:                              Mairs and Power Income Fund, Inc.


                                     By
- - - --------------------------------        ----------------------------


                                      - 8 -

<PAGE>


                           Consent of Independent Auditors


We consent to the reference to our firm under the captions "Condensed Financial
Information" and "Financial Statements" in Amendment No. 39 to the Registration
Statement (Form N-1A, No. 2-18269) and related Prospectus of Mairs and Power
Income Fund, Inc. and to the incorporation by reference therein of our report
dated January 12, 1996, with respect to the financial statements and financial
highlights of Mairs and Power Income Fund, Inc. included in its Annual Report
for the year ended December 31, 1995, filed with the Securities and Exchange
Commission.



                                                           /s/ Ernst & Young LLP


Minneapolis, Minnesota
April 19, 1996

<PAGE>
ANNUAL REPORT
 
December 31, 1995
 
W-2062 First National Bank Building
332 Minnesota Street
St. Paul, Minnesota 55101
612-222-8478
<PAGE>
TO THE SHAREHOLDERS:
FOURTH QUARTER RESULTS
 
    Just  when you think that things can't  get much better, they do! The Income
Fund continued its  recent string  of consecutive quarterly  gains with  another
strong  showing in  the final  quarter of 1995.  Based on  a net  asset value of
$65.39 per share  on December  31, 1995, the  Fund produced  a total  investment
return  of 4.9% for  the quarter after  adjustment for the  reinvestment of cash
dividends and  capital gain  distributions. This  compared with  equally  strong
gains  of 6.0% for the Standard & Poor's 500 Stock Index and 4.7% for the Lehman
Brothers Gov't/Corp. Bond Index.
 
    The overall investment environment  continued to be  very positive with  low
inflation,  falling interest rates  and growing corporate  profits. However, the
economy showed signs of running out of steam toward the end of the quarter  with
inventory  levels  rising  and growth  in  final  demand slowing  down.  This is
believed to have contributed to an increased disparity in the performance  among
various  industry groups during  the period. Farm  machinery, housing and health
care  did  the  best  while  groups  more  sensitive  to  the  economy  such  as
semi-conductors,  machine tools, and retailing  fared worst. Individual holdings
within the Fund that did the best included Pfizer (+18.0%), Bristol Myers-Squibb
(+17.8%), Minnesota Mining &  Mfg. (+17.7%) and  Texas Utilities (+17.6%)  while
Merrill  Lynch  (-18.4%), Deluxe  (-12.5%),  Sturm Ruger  (-12.4%)  and National
Computer Systems (-12.2%) did the worst.
 
FULL YEAR 1995 IN REVIEW
 
    With both stock and bond markets  achieving near record increases, 1995  was
almost  a  complete  reversal from  the  previous  year. The  Income  Fund fully
participated in the market strength showing a 30.0% total investment return  for
the  year after  adjustment for the  reinvestment of cash  dividends and capital
gain distributions. This compared to a return  of 37.5% for the Standard &  Poor
500  which was the best since 1958 when  a 43.4% return was realized. The Lehman
Brothers Gov't./Corp. Bond Index earned a return of 19.2% reflecting a  dramatic
decline  in interest rates (U.S. Treasury rates  fell nearly 175 basis points on
the 30 year bond and some 245 basis points on the 2 year note). The Income  Fund
also did well relative to other balanced mutual funds as evidenced by an average
return of 24.9% for a CDA/Wiesenberger universe of 253 balanced funds.
 
    The  past year can be characterized as a near perfect market environment for
financial assets. Inflation remained low as measured by a relatively modest 2.5%
increase in the Consumer  Price Index. Corporate profits  are estimated to  have
improved  at an above  average rate of  near 15%. There  was plenty of liquidity
with which to purchase financial  assets as individuals increased their  savings
rate and corporations generated excess cash flow as a result of cost cutting and
restructuring.  This surplus cash was used in  many instances to help fund stock
repurchase programs. Finally, foreign investors  are thought to have stepped  up
their  investment in U.S.  markets with the  recovery of the  Dollar relative to
other major currencies that began around mid-year.
 
    As compared to past  years, mutual funds have  now become the driving  force
behind  financial  markets replacing  defined  benefit pension  plans.  This was
especially true in 1995 when the Investment Company Institute reported that some
$250 billion in new money found its way
 
                                       1
<PAGE>
into mutual funds. Moreover, the number of shareholder accounts in mutual  funds
have  more than doubled since 1990 to 127 million and the number of mutual funds
now in existence  exceeds the  number of  stocks listed  on the  New York  Stock
Exchange.
 
FUTURE OUTLOOK
 
    The weakness in the economy that began to surface late last year is expected
to  continue at  least through  the first half  of 1996.  Consumer spending will
likely remain  sluggish  for  awhile  due  to  a  number  of  factors  including
historically  high debt  levels and  a rising  savings rate.  Consequently, with
inventories still  on the  high side,  the production  of consumer  goods  seems
likely  to  be  restrained until  a  pick-up  in final  demand  becomes evident.
Government spending is also not expected to provide much of a stimulus over  the
near  term given the current  budget impasse in Washington  D.C. and a generally
conservative posture at  state and  local levels.  On the  other hand,  business
spending  and export  demand are  expected to remain  strong enough  to keep the
overall economy moving ahead albeit at a very modest rate.
 
    Despite the stock market's spectacular gains of last year and so far  during
1996,  we remain  positive on  the outlook  to the  extent that  we believe some
further progress can  be achieved over  the remainder of  the year. The  factors
that  have driven  the stock  market higher  over the  past year  continue to be
largely in place. The major  risk to this scenario  seems to lie with  corporate
profits  which at this  time are expected  to show a  reasonable increase in the
5-8% range considering the prospects for some further profitability improvement.
However, any surprises seem more  likely to be on  the downside rather than  the
upside  given a relatively  weak economic outlook.  From a valuation standpoint,
the market does not  appear excessively valued  based on a  Standard & Poor  500
price/earnings   multiple  of   some  17X   estimated  1996   earnings  although
historically low  dividend  yields and  high  book value  ratios  might  suggest
otherwise.
 
    Interest  rates seem  likely to  trend lower  over the  near term  given the
slowdown in the  economy and  Fed's recent efforts  to revive  it. However,  any
further  declines are  expected to show-up  more at  the short end  of the yield
curve as opposed to the longer end  where yields are more responsive to  changes
in  inflation  rates real  or perceived.  While  we do  not expect  inflation to
increase much from  current levels, neither  do we expect  any decline with  the
important  food and energy components unlikely to show much, if any, improvement
in the near future.
 
                                                                William B. Frels
                                                                       President
 
                                       2
<PAGE>
                                     [LOGO]
                              GEORGE C. POWER, JR.
                                   1914-1995
 
    George Power  began his  investment career  in 1933  while he  was still  an
undergraduate at Carleton College. He held a summer job at Northwestern National
Bank  of Minneapolis where his  responsibilities included valuing collateral for
customers who had borrowed funds to purchase securities prior to the 1929 market
crash. At an early  age, he learned  the relationship of  risk and reward.  Upon
graduation  from college, he jointed the Investment Research Department of First
Bank Stock Corporation  where he made  many life-long friends,  several of  whom
played  leadership roles in the investment community of the Twin Cities. After a
stint in the U.S. Army during World War II where he rose to the rank of Captain,
he became a partner of George A. Mairs,  Jr. who founded the firm in 1931  which
subsequently   became  Mairs  and  Power,  Investment  Counsel.  George  Power's
remarkable investment career spanned 62 years  and continued until his death  on
July  18, 1995. While he received many accolades  along the way, he will best be
remembered for his uncommon  concern for all  of the people  he knew and  served
during  this long and fruitful career. George  served as an Officer and Director
of Mairs and Power Income Fund from its inception in 1961 until the time of  his
death.  While he suffered physical impairment  in recent years, his intellectual
powers and great enthusiasm for life remained undiminished. His wise counsel and
high level of personal integrity served as  a constant inspiration to all of  us
who had the good fortune to share his association.
 
                                       3
<PAGE>
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<CAPTION>
                                                 MPI        S&P        CPI
<S>                                           <C>        <C>        <C>
1985                                              10000      10000      10000
1986                                              11535      11870      10190
1987                                              11733      12487      10567
1988                                              13364      14560      11000
1989                                              15726      19161      11528
1990                                              15940      18548      12151
1991                                              20065      24205      12661
1992                                              21241      26069      13041
1993                                              23545      28702      13393
1994                                              23056      29075      13755
1995                                              29981      39990      14099
Average Annual Total Return
1 Year                                           5 Year    10 Year
30.04%                                           13.47%     11.60%
Past investment results should not be taken
as
necessarily representative of future
performance.
</TABLE>
 
                                       4
<PAGE>
                              FINANCIAL HIGHLIGHTS
            (SELECTED PER SHARE DATA AND RATIOS -- FOR EACH SHARE OF
               CAPITAL STOCK OUTSTANDING THROUGHOUT EACH PERIOD)
<TABLE>
<CAPTION>
                                                                  YEAR ENDED DECEMBER 31
                               1995       1994       1993       1992       1991       1990       1989       1988       1987
<S>                          <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
                             -------------------------------------------------------------------------------------------------
 
PER SHARE
Net asset value, beginning
 of year                     $   52.42  $   56.38  $   53.82  $   53.34  $   44.11  $   45.78  $   41.39  $   39.08  $   42.53
Investment operations:
  Net investment income           2.01       2.09       2.00       2.00       1.98       2.12       2.13       2.24       2.00
  Net realized and
   unrealized gains
   (losses) on investments       13.55     (3.25)       3.79       1.07       9.24     (1.53)       5.07       3.14     (1.16)
                             ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
Total from investment
 operations                      15.56     (1.16)       5.79       3.07      11.22       0.59       7.20       5.38       0.84
Less distributions:
  Dividends (from net
   investment income)           (2.04)     (2.06)     (1.98)     (1.99)     (1.99)     (2.13)     (2.15)     (2.23)     (2.11)
  Distributions (from
   capital gains)               (0.55)     (0.74)     (1.25)     (0.60)         --     (0.13)     (0.66)     (0.84)     (2.18)
                             ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
Total distributions             (2.59)     (2.80)     (3.23)     (2.59)     (1.99)     (2.26)     (2.81)     (3.07)     (4.29)
                             ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
Net asset value, end of
 year                        $   65.39  $   52.42  $   56.38  $   53.82  $   53.34  $   44.11  $   45.78  $   41.39  $   39.08
                             ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
 
TOTAL INVESTMENT RETURN          30.0%     (2.1)%      10.9%       5.9%      25.9%       1.4%      17.7%      13.9%       1.7%
                             ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
                             ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
NET ASSETS, END OF YEAR
 (000'S OMITTED)                16,979     12,973     13,442     11,536     10,676      8,075      7,886      6,570      5,772
 
RATIOS/SUPPLEMENTAL DATA:
  Ratio of expenses to
   average net assets            1.12%      1.11%      1.06%      1.13%      1.25%      1.20%      1.22%      1.22%      1.20%
  Ratio of net investment
   income to average net
   assets                        3.47%      3.80%      3.50%      3.72%      4.02%      4.78%      4.78%      5.33%      4.43%
 
  Portfolio turnover rate        3.95%     17.28%     24.10%     16.12%     24.37%     20.15%     14.18%     25.83%     20.83%
 
<CAPTION>
 
                               1986
<S>                          <C>
 
PER SHARE
Net asset value, beginning
 of year                     $   41.86
Investment operations:
  Net investment income           1.98
  Net realized and
   unrealized gains
   (losses) on investments        4.38
                             ---------
Total from investment
 operations                       6.36
Less distributions:
  Dividends (from net
   investment income)           (1.95)
  Distributions (from
   capital gains)               (3.74)
                             ---------
Total distributions             (5.69)
                             ---------
Net asset value, end of
 year                        $   42.53
                             ---------
TOTAL INVESTMENT RETURN          15.3%
                             ---------
                             ---------
NET ASSETS, END OF YEAR
 (000'S OMITTED)                 5,395
RATIOS/SUPPLEMENTAL DATA:
  Ratio of expenses to
   average net assets            1.20%
  Ratio of net investment
   income to average net
   assets                        4.43%
  Portfolio turnover rate       32.46%
</TABLE>
 
                                       5
<PAGE>
                            STATEMENT OF NET ASSETS
                               DECEMBER 31, 1995
 
<TABLE>
<CAPTION>
FIXED INCOME SECURITIES
                                                                        Market
                                                                        Value
                                                                        [Note
Face Amount              Security Description                  Cost     2(A)]
- - - -----------  ---------------------------------------------  ----------  ----------
             U.S. TREASURY & FEDERAL AGENCY OBLIGATIONS 7.5%
<C>          <S>                                            <C>         <C>
 $ 300,000   U.S. Treasury Notes 7.00% 9/30/96                 300,000     303,844
   200,000   U.S. Treasury Notes 7.125% 9/30/99                197,172     212,063
   250,000   Federal Home Loan Bank 7.48% 6/28/01              250,000     254,710
   250,000   Federal National Mortgage Association 7.19%
              3/22/04                                          243,750     250,125
   250,000   Federal Home Loan Mortgage Corporation 7.30%
              7/27/05                                          250,000     256,525
                                                            ----------  ----------
                                                             1,240,922   1,277,267
             OTHER NON-CONVERTIBLE BONDS 12.2%
   250,000   Dupont (E.I.) de Nemours & Company 6.00%
              12/1/01                                          249,750     248,438
   250,000   Household Finance Corp. 7.00% 2/15/03             250,000     261,780
   265,000   J. C. Penney & Co. 6.00% 5/01/06                  239,613     259,591
   250,000   Merrill Lynch and Co., Inc. 7.00% 4/27/08         247,977     257,345
   250,000   General Foods Corporation 7.00% 6/15/11           240,000     250,000
   200,000   Ford Motor Company Debentures 9.50% 9/15/11       199,836     255,900
   250,000   Goldman Sachs & Company 8.00% 3/01/13             256,025     274,707
   250,000   Allstate Corp. 7.50% 6/15/13                      218,937     265,855
                                                            ----------  ----------
                                                             1,902,138   2,073,616
             CONVERTIBLE BONDS 6.0%
   150,000   General Signal Corporation 5.75% 6/01/02          147,375     155,625
   177,000   Pogo Producing Co. 8.00% 12/31/05                 135,221     181,425
   150,000   Cray Research, Inc. 6.125% 2/01/11                101,000     120,750
   150,000   Browning-Ferris Industries, Inc. 6.25%
              8/15/12                                          136,125     149,625
   150,000   Ashland, Inc. 6.75% 7/01/14                       144,000     149,250
   250,000   Cooper Industries, Inc. 7.05% 1/01/15             240,892     257,500
                                                            ----------  ----------
                                                               904,613   1,014,175
             NON-CONVERTIBLE AND CONVERTIBLE PREFERRED STOCK 10.0%
     6,000   Bankers Trust New York Corporation $1.91          144,495     151,500
     6,000   Barclays Bank PLC, Series E $2.00                 150,000     153,000
     5,000   The Bear Stearns Companies, Inc. Pf, Series C
              $1.90                                            125,000     125,000
     5,000   Community First Bankshares, Inc. $1.75            125,000     178,750
     4,000   Delta Air Lines, Inc. Pf, Series C $3.50          204,938     237,500
     7,000   Fourth Financial Corporation Pf. Series A
              $1.75                                            209,125     245,875
     2,500   J. P. Morgan & Co., Series A, Adj Rate Pf
              $5.00                                            143,720     200,000
     5,000   Noram Energy Pf $3.00                             150,600     196,250
     4,000   Provident Life & Accident Insurance Co. Pf
              $2.025                                           100,000     104,000
     2,000   St. Paul Capital Pf $3.00                         100,000     112,500
                                                            ----------  ----------
                                                             1,452,878   1,704,375
                                                            ----------  ----------
             TOTAL FIXED INCOME SECURITIES 35.7%             5,500,551   6,069,433
                                                            ----------  ----------
</TABLE>
 
                                       6
<PAGE>
                        STATEMENT OF NET ASSETS (CONT.)
<TABLE>
<C>          <S>                                            <C>         <C>
                                             COMMON STOCK
 
<CAPTION>
                                                                        Market
                                                                        Value
 Number of                                                              [Note
  Shares                 Security Description                  Cost     2(A)]
- - - -----------  ---------------------------------------------  ----------  ----------
<C>          <S>                                            <C>         <C>
             BASIC INDUSTRIES 6.0%
     5,000   Cooper Industries, Inc.                        $  171,431  $  183,750
     8,000   Graco Inc.                                        147,460     244,000
     5,000   Ingersoll-Rand Company                             61,341     175,625
     4,000   Pentair, Inc.                                      51,782     199,000
     5,000   Weyerhaeuser Company                              135,368     216,250
                                                            ----------  ----------
                                                               567,382   1,018,625
             CONSUMER 11.7%
     5,000   American Greetings Class A                        136,250     138,125
     5,000   Briggs & Stratton Corporation                      61,116     216,875
     5,088   ConAgra, Inc.                                     159,531     209,880
     6,000   Deluxe Corp.                                      159,116     174,000
     3,000   The Dun & Bradstreet Corporation                  146,260     194,250
     2,000   Eastman Kodak Company                              53,573     134,000
     3,000   General Mills, Inc.                               151,030     173,250
     4,000   Genuine Parts Company                             112,272     164,000
     3,000   Hershey Foods Corporation                         146,610     195,000
     7,000   Hormel (Geo. A.) & Company                        141,965     172,375
     8,000   Sturm, Ruger & Co., Inc.                           67,552     219,000
                                                            ----------  ----------
                                                             1,335,275   1,990,755
             ENERGY 6.7%
     4,000   Amoco Corporation                                 140,723     286,000
     2,000   Exxon Corporation                                  20,793     161,000
     2,500   Mobil Corporation                                  54,750     279,375
     5,000   Murphy Oil Corporation                            139,408     207,500
     3,000   Schlumberger, Limited                             105,048     207,750
                                                            ----------  ----------
                                                               460,722   1,141,625
             FINANCIAL 13.9%
     5,000   American Express Company                           99,215     206,875
     5,000   First Bank System, Inc.                            58,358     248,125
     5,000   Firstar Corp.                                     163,175     198,125
     3,375   Jefferson-Pilot Corp.                              60,323     156,937
     6,000   Merrill Lynch & Co., Inc.                          99,319     306,000
     4,000   J.P. Morgan & Co., Inc.                           102,082     321,000
    20,000   Norwest Corporation                                94,825     660,000
     6,000   ReliaStar                                         110,625     266,250
                                                            ----------  ----------
                                                               787,922   2,363,312
</TABLE>
 
                                       7
<PAGE>
                        STATEMENT OF NET ASSETS (CONT.)
 
<TABLE>
<CAPTION>
                                                                        Market
                                                                        Value
 Number of                                                              [Note
  Shares                 Security Description                  Cost     2(A)]
- - - -----------  ---------------------------------------------  ----------  ----------
             HEALTH CARE 8.7%
<C>          <S>                                            <C>         <C>
     3,000   American Home Products Corporation             $  182,542  $  291,000
     5,000   Baxter International Inc.                          76,524     209,375
     4,000   Bristol-Myers Squibb Company                      205,562     343,500
    10,000   Pfizer Inc.                                       136,357     630,000
                                                            ----------  ----------
                                                               600,985   1,473,875
             TECHNOLOGY 9.7%
     5,000   AMP Incorporated                                  133,605     191,250
     7,000   Corning Inc.                                      188,965     224,000
     3,000   Emerson Electric Co.                              128,697     245,250
     5,000   Honeywell Inc.                                     90,716     243,125
     2,000   International Business Machines Corporation        96,740     182,750
     5,000   MTS Systems Corporation                            81,500     165,000
     3,000   Minnesota Mining & Manufacturing Company           78,077     199,125
    10,000   National Computer Systems, Inc.                   121,380     188,750
                                                            ----------  ----------
                                                               919,680   1,639,250
             UTILITIES 4.0%
     7,000   GTE Corporation                                    96,007     307,125
     5,000   Texas Utilities Company                           183,482     205,000
     4,470   U S West Communications                            93,420     159,244
                                                            ----------  ----------
                                                               372,909     671,369
                                                            ----------  ----------
             TOTAL COMMON STOCK 60.7%                        5,044,875  10,298,811
                                                            ----------  ----------
             TOTAL INVESTMENTS 96.4%                        $10,545,426 16,368,244
                                                            ----------
                                                            ----------
                 OTHER ASSETS IN EXCESS OF LIABILITIES
                  3.6%                                                     610,509
                                                                        ----------
             NET ASSETS 100.0%                                          $16,978,753
                                                                        ----------
                                                                        ----------
             NUMBER OF SHARES OUTSTANDING                                  259,636
                                                                        ----------
                                                                        ----------
             NET ASSET VALUE PER SHARE                                  $    65.39
                                                                        ----------
                                                                        ----------
</TABLE>
 
SEE ACCOMPANYING NOTES.
 
                                       8
<PAGE>
                            STATEMENT OF OPERATIONS
                          YEAR ENDED DECEMBER 31, 1995
 
<TABLE>
<S>                                                        <C>        <C>
INVESTMENT INCOME
    Income:
    Dividends                                              $ 397,127
    Interest                                                 288,841
                                                           ---------
                                             TOTAL INCOME               685,968
 
  Expenses:
    Investment advisory fees (NOTE 5)                      $  90,626
    Transfer agent fees (NOTE 5)                              18,833
    Custodian Fees                                            14,100
    Audit Fees                                                15,169
    Other fees and expenses                                   28,709
                                                           ---------
                                           TOTAL EXPENSES               167,437
                                                                      ---------
                                    NET INVESTMENT INCOME               518,531
REALIZED AND UNREALIZED GAIN ON
 INVESTMENTS (NOTE 4)
    Realized net gain on investments sold                    122,640
    Unrealized appreciation of investments                 3,220,932
                                                           ---------
NET GAIN ON INVESTMENTS                                               3,343,572
                                                                      ---------
                   INCREASE IN NET ASSETS FROM OPERATIONS             $3,862,103
                                                                      ---------
                                                                      ---------
 
SEE ACCOMPANYING NOTES.
</TABLE>
 
                                       9
<PAGE>
                      STATEMENTS OF CHANGES IN NET ASSETS
 
<TABLE>
<CAPTION>
                                                           YEAR ENDED DECEMBER 31
                                                              1995        1994
<S>                                                        <C>         <C>
                                                           ----------------------
OPERATIONS
  Net investment income                                    $  518,531  $  513,783
  Realized net gains on investments sold                      122,640     181,275
  Unrealized appreciation of investments                    3,220,932    (966,393)
                                                           ----------  ----------
 
                                   INCREASE IN NET ASSETS
                                          FROM OPERATIONS   3,862,103    (271,335)
NET EQUALIZATION CREDITS                                        4,113       1,305
 
DISTRIBUTIONS TO SHAREHOLDERS
  From net investment income                                 (528,266)   (506,287)
  Short-term (gain) loss distributed as ordinary income        20,648     (38,775)
  From net realized gains                                    (140,978)   (144,512)
                                                           ----------  ----------
                      TOTAL DISTRIBUTIONS TO SHAREHOLDERS    (648,596)   (689,574)
 
CAPITAL STOCK TRANSACTIONS
  Proceeds from shares sold                                 1,573,573   1,217,607
  Reinvestment of distributions:
    From net investment income                                366,643     397,799
    From net realized gains                                   114,356     115,152
  Cost of shares redeemed                                  (1,266,415) (1,239,554)
                                                           ----------  ----------
                              INCREASE IN NET ASSETS FROM
                               CAPITAL STOCK TRANSACTIONS     788,157     491,004
                                                           ----------  ----------
                             TOTAL INCREASE IN NET ASSETS   4,005,777    (468,600)
 
NET ASSETS
  Beginning of year                                        12,972,976  13,441,576
                                                           ----------  ----------
  End of year (including undistributed investment income
   of $47,432 and $53,055, respectively)                   $16,978,753 $12,972,976
                                                           ----------  ----------
                                                           ----------  ----------
CHANGES IN CAPITAL STOCK
  Shares sold                                                  25,820      22,220
  Shares issued for reinvested distributions                    7,759       9,561
  Shares redeemed                                             (21,427)    (22,727)
                                                           ----------  ----------
                                   NET INCREASE IN SHARES      12,152       9,054
                                                           ----------  ----------
                                                           ----------  ----------
</TABLE>
 
SEE ACCOMPANYING NOTES.
 
                                       10
<PAGE>
                         NOTES TO FINANCIAL STATEMENTS
                               DECEMBER 31, 1995
 
<TABLE>
<S>         <C>
Note 1 --   The  fund is  registered under  the Investment  Company Act  of 1940 (as
            amended) as  a  diversified,  no-load,  open-end  management  investment
            company.  The objective of the Fund is to provide liberal current income
            and  the  possibility  of  modest  long-term  capital  appreciation   by
            investing   in  a  diversified  list  of  securities,  including  bonds,
            preferred and  common  stocks  and securities  convertible  into  common
            stock.
Note 2 --   Significant accounting policies of the Fund are as follows:
            (a) Market value of investments is based on the last reported sale price
            on  December 31 for listed  securities or the mean  of the bid and asked
                price for other  securities. Security transactions  are recorded  on
                the  trade date, the date on which securities are purchased or sold.
                Dividend income is recognized on  the ex-dividend date and  interest
                income is recorded on the accrual basis. The cost of securities sold
                is determined based on the specific identification method.
            (b)  No provision has  been made for  Federal income taxes  as it is the
            intention of the  Fund to  comply with  the provisions  of the  Internal
                Revenue   Code  applicable  to  investment  companies  and  to  make
                distributions of income and security gains sufficient to relieve  it
                from all or substantially all income taxes.
            (c)  The Fund allows the accounting practice known as equalization. When
            Fund shares are  issued or  redeemed, the  distributable net  investment
                income  per  share  is  credited  or  charged  to  undistributed net
                investment income;  therefore, undistributed  net investment  income
                per share is not affected by sales or redemptions.
Note 3 --   Purchases  and sales of investment  securities, excluding government and
            short-term  securities,  during  the   year  ended  December  31,   1995
            aggregated $1,101,582 and $576,006, respectively.
Note 4 --   At  December 31, 1995, the  accumulated excess distributions of realized
            net gains on investments sold  was $10,369. Net unrealized  appreciation
            on investments for federal income tax purposes aggregated $5,822,818, of
            which $5,824,131 related to appreciated investment securities and $1,313
            related   to  depreciated  investment   securities.  Aggregate  cost  of
            investments for Federal income tax purposes was $10,545,426.
Note 5 --   The investment advisory fees were paid  to Mairs and Power, Inc.,  which
            is  owned by individuals who are directors and officers of the Fund, for
            its services as investment adviser.  Investment advisory fees were  paid
            to  the  adviser  pursuant  to an  advisory  agreement  approved  by the
            directors of the Fund.  The advisory fee is  computed each month and  is
            1/20  of one  percent of  the net asset  value of  the Fund  on the last
            valuation day of the  month. The transfer agent  fees were also paid  to
            Mairs  and Power,  Inc. who serves  as transfer agent.  Directors of the
            Fund not affiliated with Mairs and Power, Inc. received compensation for
            meetings attended totaling $4,650 in  1995. No compensation was paid  to
            any other director or officer of the Fund.
Note 6 --   At  December 31, 1995,  there were 10,000,000 shares  of $0.10 par value
            capital stock  authorized  and  additional  paid-in  capital  aggregated
            $11,098,133.
</TABLE>
 
                                       11
<PAGE>
                         REPORT OF INDEPENDENT AUDITORS
 
To the Board of Directors and Shareholders
Mairs and Power Income Fund, Inc.
 
We  have audited  the accompanying  statement of net  assets of  Mairs and Power
Income Fund, Inc. (the Fund) as of December 31, 1995, and the related  statement
of  operations for the year then ended,  the statements of changes in net assets
for each of the two years in the period then ended, and the financial highlights
for each of the ten years in  the period then ended. These financial  statements
and  financial highlights are  the responsibility of  the Fund's management. Our
responsibility is  to  express an  opinion  on these  financial  statements  and
financial highlights based on our audits.
 
We   conducted  our  audits  in  accordance  with  generally  accepted  auditing
standards. Those standards require that we plan and perform the audit to  obtain
reasonable  assurance  about  whether  the  financial  statements  and financial
highlights are free of material misstatement. An audit includes examining, on  a
test  basis, evidence  supporting the amounts  and disclosures  in the financial
statements. Our  procedures  included confirmation  of  securities owned  as  of
December  31, 1995, by correspondence with the custodian. An audit also includes
assessing the  accounting  principles used  and  significant estimates  made  by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
In our opinion, the  financial statements and  financial highlights referred  to
above  present fairly, in all material respects, the financial position of Mairs
and Power Income Fund, Inc. at December 31, 1995, the results of its  operations
for the year then ended, the changes in its net assets for each of the two years
in the period then ended, and the financial highlights for each of the ten years
in  the  period  then ended  in  conformity with  generally  accepted accounting
principles.
 
                                                              [LOGO]
 
January 12, 1996
 
                                       12

<PAGE>
                        SUMMARY OF FINANCIAL INFORMATION
- - - --------------------------------------------------------------------------------
 
This table covers a period of generally rising bond and common stock prices. The
results  shown  should not  be considered  as a  representation of  the dividend
income or capital gain or loss which  may result from an investment made in  the
Fund today.
 
<TABLE>
<CAPTION>
                                                       PER SHARE
                                       -----------------------------------------
                                                      DISTRIBU-
                                                      TIONS OF       DIVIDENDS     PERFORMANCE
                SHARES                                REALIZED       FROM NET     OF AN ASSUMED
                 OUT-      TOTAL NET    NET ASSET    SECURITIES     INVESTMENT    INVESTMENT OF
   DATES       STANDING      ASSETS       VALUE         GAINS         INCOME        $10,000*
- - - ------------  -----------  ----------  -----------  -------------  -------------  -------------
<S>           <C>          <C>         <C>          <C>            <C>            <C>
Dec. 31,
 1986            126,862   $5,395,111   $   42.53     $    3.74      $    1.95      $  11,535
Dec. 31,
 1987            147,717   $5,772,298   $   39.08     $    2.18      $    2.11      $  11,733
Dec. 31,
 1988            158,713   $6,569,555   $   41.39     $    0.84      $    2.23      $  13,364
Dec. 31,
 1989            172,243   $7,886,058   $   45.78     $    0.66      $    2.15      $  15,725
Dec. 31,
 1990            183,079   $8,075,488   $   44.11     $    0.13      $    2.13      $  15,938
Dec. 31,
 1991            200,138   $10,676,264  $   53.34     $    0.00      $    1.99      $  20,063
Dec. 31,
 1992            214,336   $11,535,822  $   53.82     $    0.60      $    1.99      $  21,239
Dec. 31,
 1993            238,430   $13,441,576  $   56.38     $    1.25      $    1.98      $  23,543
Dec. 31,
 1994            247,484   $12,972,976  $   52.42     $    0.74      $    2.06      $  23,054
Dec. 31,
 1995            259,636   $16,978,753  $   65.39     $    0.55      $    2.04      $  29,978
</TABLE>
 
*Assumes the reinvestment of all income dividends and capital gain distributions
 for a $10,000 investment made at the beginning of 1986.
 
- - - --------------------------------------------------------------------------------
 
Note:  No adjustment has been made for any income tax payable by stockholders on
capital gains distributions accepted in shares.
 
Past investment results  should not  be taken as  necessarily representative  of
future performance.
 
  AVERAGE  ANNUAL TOTAL RETURNS--THE  AVERAGE ANNUAL TOTAL  RETURNS FOR THE FUND
(PERIODS ENDED DECEMBER 31, 1995) ARE AS FOLLOWS:
         1 YEAR: +30.0%         5 YEARS: +13.5%         10 YEARS: +11.6%
* THE TOTAL RETURN DATA REPRESENTS  PAST PERFORMANCE, AND THE INVESTMENT  RETURN
  AND  PRINCIPAL VALUE  OF AN  INVESTMENT WILL  FLUCTUATE SO  THAT AN INVESTOR'S
  SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.
 
                                       13
<PAGE>
                             OFFICERS AND DIRECTORS
 
    William B. Frels                 .................President and Director
    George A. Mairs, III               ...............Secretary and Director
    Peter G. Robb                ................Vice-President and Director
    Kathleen M. Kellerman                     .....................Treasurer
    Litton E. S. Field                       .......................Director
    Donald E. Garretson                      .......................Director
    J. Thomas Simonet                       ........................Director
 
<TABLE>
<S>                               <C>
       INVESTMENT ADVISER                    CUSTODIAN
Mairs and Power, Inc.             Norwest Bank Minnesota, N.A.
332 Minnesota Street              6th and Marquette Avenue
W-2062 First National Bank        Minneapolis, Minnesota 55479
Building
Saint Paul, Minnesota 55101
 
         TRANSFER AGENT                 INDEPENDENT AUDITORS
Mairs and Power, Inc.             Ernst & Young, LLP
332 Minnesota Street              1400 Pillsbury Center
W-2062 First National Bank        200 South Sixth Street
Building                          Minneapolis, Minnesota 55402
Saint Paul, Minnesota 55101
</TABLE>
 
                                       14

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM ANNUAL
REPORT DATED DECEMBER 31, 1995 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-START>                             JAN-01-1995
<PERIOD-END>                               DEC-31-1995
<INVESTMENTS-AT-COST>                         10545426
<INVESTMENTS-AT-VALUE>                        16368244
<RECEIVABLES>                                   108582
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                            512658
<TOTAL-ASSETS>                                16989484
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        10732
<TOTAL-LIABILITIES>                              10732
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                      11098133
<SHARES-COMMON-STOCK>                           259636
<SHARES-COMMON-PRIOR>                           247484
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                         (47432)
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                       (10369)
<ACCUM-APPREC-OR-DEPREC>                       5822818
<NET-ASSETS>                                  16978753
<DIVIDEND-INCOME>                               397127
<INTEREST-INCOME>                               288841
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                (167438)
<NET-INVESTMENT-INCOME>                         518531
<REALIZED-GAINS-CURRENT>                        122640
<APPREC-INCREASE-CURRENT>                      3220932
<NET-CHANGE-FROM-OPS>                          3862103
<EQUALIZATION>                                    4113
<DISTRIBUTIONS-OF-INCOME>                     (507618)
<DISTRIBUTIONS-OF-GAINS>                      (140978)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          25820
<NUMBER-OF-SHARES-REDEEMED>                    (21426)
<SHARES-REINVESTED>                               7757
<NET-CHANGE-IN-ASSETS>                         4005777
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                        (53055)
<OVERDIST-NET-GAINS-PRIOR>                       (945)
<GROSS-ADVISORY-FEES>                            90626
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 167437
<AVERAGE-NET-ASSETS>                          14583486
<PER-SHARE-NAV-BEGIN>                            52.42
<PER-SHARE-NII>                                   2.01
<PER-SHARE-GAIN-APPREC>                          13.55
<PER-SHARE-DIVIDEND>                            (2.04)
<PER-SHARE-DISTRIBUTIONS>                       (0.55)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              65.39
<EXPENSE-RATIO>                                   1.12
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>


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