<PAGE>
SUPPLEMENT TO THE PROSPECTUSES AND
STATEMENTS OF ADDITIONAL INFORMATION OF
<TABLE>
<CAPTION>
<S> <C>
KEYSTONE FUND FOR TOTAL RETURN KEYSTONE AMERICA OMEGA FUND, INC.
KEYSTONE GLOBAL OPPORTUNITIES FUND KEYSTONE STRATEGIC INCOME FUND
KEYSTONE AMERICA KEYSTONE TAX FREE INCOME FUND
HARTWELL EMERGING GROWTH FUND, INC. KEYSTONE WORLD BOND FUND
KEYSTONE HARTWELL GROWTH FUND KEYSTONE FUND OF THE AMERICAS
(THE "FUND(S)") KEYSTONE STRATEGIC DEVELOPMENT FUND
</TABLE>
The prospectus and statement of additional information of each Fund are
hereby supplemented as follows:
The following changes relating to each Fund's Class B shares are
effective on June 1, 1995. The changes only apply to Class B shares
purchased on or after June 1, 1995.
* With respect to each Fund, Keystone Investment Distributors Company
("Keystone") generally reallows to brokers or others a commission equal to
4.00% of the price paid for each Class B share sold plus the first year's
service fee in advance in the amount of 0.25% of the price paid for each
Class B share sold. Beginning approximately 12 months after the purchase
of a Class B share, the broker or other party will receive service fees at
an annual rate of 0.25% of the average daily net asset value of such Class
B share maintained by the recipient outstanding on the books of the Fund
for specified periods.
* For the period June 1, 1995 to August 31, 1995, Keystone will reallow an
increased commission equal to 4.75% of the price paid for each Class B
share sold to those broker/dealers or others who allow their individual
selling representatives to participate in the additional 0.75% commission.
* If applicable, a contingent deferred sales charge is imposed on Class B
shares purchased on or after June 1, 1995 as follows:
Deferred
Sales Charge
Redemption Timing Imposed
First twelve month period following month of purchase ....... 5.00%
Second twelve month period following month of purchase ...... 4.00%
Third twelve month period following month of purchase ....... 3.00%
Fourth twelve month period following month of purchase ...... 3.00%
Fifth twelve month period following month of purchase ....... 2.00%
Sixth twelve month period following month of purchase ....... 1.00%
No deferred sales charge is imposed on amounts redeemed thereafter.
* Class B shares purchased on or after June 1, 1995 that are outstanding for
eight years following the month of purchase will automatically convert to
Class A shares without the imposition of a front-end sales charge or
exchange fee. Class B shares purchased prior to June 1, 1995 will retain
their existing conversion rights.
* In connection with financing its distribution costs, including commission
advances to dealers and others, Keystone has sold to a financial
institution substantially all of its 12b-1 fee collection rights and
contingent deferred sales charge collection rights in respect of Class B
shares sold during the two-year period commencing approximately June 1,
1995. Each Fund has agreed not to reduce the rate of payment of 12b-1 fees
in respect of such Class B shares unless it terminates such shares'
Distribution Plan completely. If it terminates such Distribution Plan, the
Fund may be subject to possible adverse distribution consequences.
June 1, 1995
AMER7-SK
