OPPENHEIMER MAIN STREET CALIFORNIA MUNICIPAL FUND
Supplement dated May 1, 1997 to the
Prospectus dated November 1, 1996
The Prospectus is changed as follows:
1. The first footnote under the "Shareholder Transaction
Expenses" table on page 3 is replaced with the following:
(1) If you invest $1 million or more in Class
A shares, you may have to pay a sales charge
of up to 1% if you sell your shares within 12
calendar months (18 months for shares
purchased prior to May 1, 1997) from the end
of the calendar month during which you
purchased those shares. See "How to Buy
Shares - Buying Class A Shares", below.
2. The second sentence in "Class A Shares" under "Classes of
Shares" on page 25 is replaced by the following:
If you purchase Class A shares as part of an investment of at
least $1 million in shares of one or more Oppenheimer funds,
you will not pay an initial sales charge, but if you sell any
of those shares within 12 months of buying them (18 months if
the shares were purchased prior to May 1, 1997), you may pay
a contingent deferred sales charge.
3. The following sentence is added to the end of "Which Class of
Shares Should You Choose? - How Does It Affect Payments To My
Broker?" on page 27:
The Distributor may pay additional periodic compensation from
its own resources to securities dealers or financial
institutions based upon the value of shares of the Fund owned
by the dealer or financial institution for its own account or
for its customers.
4. In the third paragraph of "Buying Class A Shares - Class A
Contingent Deferred Sales Charge" on page 29, the first sentence is
replaced by the following:
If you redeem any of those shares purchased prior to May
1, 1997, within 18 months of the end of the calendar
month of their purchase, a contingent deferred sales
charge (called the "Class A contingent deferred sales
charge") may be deducted from the redemption proceeds.
A Class A contingent deferred sales charge may be
deducted from the redemption proceeds of any of those
shares purchased on or after May 1, 1997 that are
redeemed within 12 months of the end
of the calendar month of their purchase.
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5. The third sentence of the second paragraph of "Reduced Sales
Charges for Class A Share Purchases - Right of Accumulation" on
page 30 is replaced by the following:
The Distributor will add the value, at current offering price,
of the shares you previously purchased and currently own to
the value of current purchases to determine the sales charge
rate that applies.
6. The third sub-paragraph in "Waivers of the Class A Contingent
Deferred Sales Charge for Certain Redemptions" on page 32 is
replaced by the following:
if, at the time of purchase of shares (prior to
May 1, 1997) the dealer agreed in writing to accept the
dealer's portion of the sales commission in installments
of 1/18th of the commission per month (and no further
commission will be payable if the shares are redeemed
within 18 months of purchase);
if, at the time of purchase of shares (on or
after May 1, 1997) the dealer agrees in writing to accept
the dealer's portion of the sales commission in
installments of 1/12th of the commission per month (and
no further commission will be payable if the shares are
redeemed within 12 months of purchase);
7. The following sentence is added to the end of the third
paragraph in "Distribution and Service Plans for Class B Shares" on
page 34:
If a dealer has a special agreement with the Distributor,
the Distributor will pay the Class B service fee and the
asset-based sales charge to the dealer quarterly in lieu
of paying the sales commission and service fee advance at
the time of purchase.
8. The section captioned "Special Investor Services" is revised
by adding the following after the sub-section captioned "PhoneLink"
on page 35:
Shareholder Transactions by Fax. Beginning May 30, 1997,
requests for certain account transactions may be sent to
the Transfer Agent by fax (telecopier). Please call 1-
800-525-7048 for information about which transactions are
included. Transaction requests submitted by fax are
subject to the same rules and restrictions as written and
telephone requests described in this Prospectus.
May 1, 1997 PS0725.007
OPPENHEIMER MAIN STREET INCOME & GROWTH FUND
Supplement dated May 1, 1997 to the
Prospectus dated November 1, 1996
The Prospectus is changed as follows:
1. The Supplement dated January 1, 1997 to the Prospectus is
replaced by this supplement.
2. The first footnote under the "Shareholder Transaction
Expenses" table on page 3 is replaced with the following:
(1) If you invest $1 million or more
($500,000 or more for purchases by "Retirement
Plans", as defined in "Class A Contingent
Deferred Sales Charge" on page 31) in Class A
shares, you may have to pay a sales charge of
up to 1% if you sell your shares within 12
calendar months (18 months for shares
purchased prior to May 1, 1997) from the end
of the calendar month during which you
purchased those shares. See "How to Buy
Shares - Buying Class A Shares", below.
3. The second sentence in "Class A Shares" under "Classes of
Shares" on page 26 is replaced by the following:
If you purchase Class A shares as part of an investment of at
least $1 million ($500,000 for Retirement Plans) in shares of
one or more Oppenheimer funds, you will not pay an initial
sales charge, but if you sell any of those shares within 12
months of buying them (18 months if the shares were purchased
prior to May 1, 1997), you may pay a contingent deferred sales
charge.
4. The following sentence is added to the end of "Which Class of
Shares Should You Choose? - How Does It Affect Payments To My
Broker?" on page 28:
The Distributor may pay additional periodic compensation from
its own resources to securities dealers or financial
institutions based upon the value of shares of the Fund owned
by the dealer or financial institution for its own account or
for its customers.
5. The following fourth sub-paragraph is added to "Buying Class
A Shares - Class A Contingent Deferred Sales Charge" on page 31:
Purchases by a retirement plan qualified under
section 401(a) if the retirement plan has total plan
assets of $500,000 or more.
6. The first sentence in the second paragraph of "Buying Class A
Shares - Class A Contingent Deferred Sales Charge" on page 31 is
replaced by the following:
The Distributor pays dealers of record commission on
those purchases in an amount equal to (i) 1.0% for non-
Retirement Plan accounts, and (ii) for Retirement Plan
accounts, 1.0% of the first $2.5 million, plus 0.50% of
the next $2.5 million, plus 0.25% of purchases over $5
million, calculated on a calendar year basis.
7. In the third paragraph of "Buying Class A Shares - Class A
Contingent Deferred Sales Charge" on page 32, the first sentence is
replaced by the following:
If you redeem any of those shares purchased prior to May
1, 1997, within 18 months of the end of the calendar
month of their purchase, a contingent deferred sales
charge (called the "Class A contingent deferred sales
charge") may be deducted from the redemption proceeds.
A Class A contingent deferred sales charge may be
deducted from the redemption proceeds of any of those
shares purchased on or after May 1, 1997 that are
redeemed within 12 months of the end
of the calendar month of their purchase.
8. The third sentence of the second paragraph of "Reduced Sales
Charges for Class A Share Purchases - Right of Accumulation" on
page 33 is replaced by the following:
The Distributor will add the value, at current offering price,
of the shares you previously purchased and currently own to
the value of current purchases to determine the sales charge
rate that applies.
9. The third sub-paragraph in "Waivers of the Class A Contingent
Deferred Sales Charge for Certain Redemptions" on page 35 is
replaced by the following:
if, at the time of purchase of shares (prior to
May 1, 1997) the dealer agreed in writing to accept the
dealer's portion of the sales commission in installments
of 1/18th of the commission per month (and no further
commission will be payable if the shares are redeemed
within 18 months of purchase);
if, at the time of purchase of shares (on or
after May 1, 1997) the dealer agrees in writing to accept
the dealer's portion of the sales commission in
installments of 1/12th of the commission per month (and
no further commission will be payable if the shares are
redeemed within 12 months of purchase);
10. The following sub-paragraphs are added at the end of "Waivers
of the Class A Contingent Deferred Sales Charge for Certain
Redemptions" on page 36:
for distributions from Retirement Plans having
500 or more eligible participants, except distributions
due to termination of all of the Oppenheimer funds as an
investment option under the Plan; and
for distributions from 401(k) plans sponsored by
broker-dealers that have entered into a special agreement
with the Distributor allowing this waiver.
11. The following sentence is added to the end of the third
paragraph in "Distribution and Service Plans for Class B and Class
C Shares" on page 38:
If a dealer has a special agreement with the Distributor,
the Distributor will pay the Class B service fee and the
asset-based sales charge to the dealer quarterly in lieu
of paying the sales commission and service fee advance at
the time of purchase.
12. The following is added as a new penultimate sentence to the
fourth paragraph of "Distribution and Service Plans for Class B
and Class C shares" on page 38:
If a dealer has a special agreement with the
Distributor, the Distributor shall pay the Class C
service fee and asset-based sales charge to the dealer
quarterly in lieu of paying the sales commission and
service fee advance at the time of purchase.
13. The introductory phrase in the sixth sub-paragraph of "Waivers
for Redemptions of Shares in Certain Cases" in "Waivers of Class B
and Class C Sales Charges" on page 40 is replaced with the
following and a new sub-section (6) is added as follows:
distributions from OppenheimerFunds prototype
401(k) plans and from certain Massachusetts Mutual Life
Insurance Company prototype 401(k) plans
. . . (6) for loans to participants or beneficiaries.
14. The following sub-paragraph is added at the end of "Waivers
for Redemptions of Shares in Certain Cases" in "Waivers of Class B
and Class C Sales Charges" on page 40:
Distributions from 401(k) plans sponsored by
broker-dealers that have entered into a special agreement
with the Distributor allowing this waiver.
15. The section captioned "Special Investor Services" is revised
by adding the following after the sub-section captioned "PhoneLink"
on page 41:
Shareholder Transactions by Fax. Beginning May 30, 1997,
requests for certain account transactions may be sent to
the Transfer Agent by fax (telecopier). Please call 1-
800-525-7048 for information about which transactions are
included. Transaction requests submitted by fax are
subject to the same rules and restrictions as written and
telephone requests described in this Prospectus.
May 1, 1997 PS0700.015
