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<PAGE> PAGE 2
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022 D000002 7668
022 A000003 REGIONAL OPERATIONS GROUP
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<PAGE> PAGE 3
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SIGNATURE J.KEVIN KENELY
TITLE V.P.FUND ADMIN.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM ACCOUNTING
RECORDS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH ACCOUNTING
RECORDS.
</LEGEND>
<SERIES>
<NUMBER> 101
<NAME> KEYSTONE TAX FREE INCOME FUND CLASS A
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> MAY-31-1998
<PERIOD-START> JUN-01-1997
<PERIOD-END> NOV-30-1997
<INVESTMENTS-AT-COST> 96,296,749
<INVESTMENTS-AT-VALUE> 101,440,413
<RECEIVABLES> 1,497,795
<ASSETS-OTHER> 39,646
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 102,977,854
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1,403,515
<TOTAL-LIABILITIES> 1,403,515
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 60,940,477
<SHARES-COMMON-STOCK> 6,676,928
<SHARES-COMMON-PRIOR> 7,424,946
<ACCUMULATED-NII-CURRENT> 150,807
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> (979,164)
<ACCUM-APPREC-OR-DEPREC> 6,713,109
<NET-ASSETS> 66,825,229
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 2,030,484
<OTHER-INCOME> 0
<EXPENSES-NET> (397,655)
<NET-INVESTMENT-INCOME> 1,632,829
<REALIZED-GAINS-CURRENT> 1,093,895
<APPREC-INCREASE-CURRENT> 569,253
<NET-CHANGE-FROM-OPS> 3,295,977
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (1,633,540)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 30,321
<NUMBER-OF-SHARES-REDEEMED> (861,176)
<SHARES-REINVESTED> 82,837
<NET-CHANGE-IN-ASSETS> (5,782,596)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> (158,709)
<OVERDIST-NET-GAINS-PRIOR> (2,296,404)
<GROSS-ADVISORY-FEES> (216,306)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (397,655)
<AVERAGE-NET-ASSETS> 70,624,005
<PER-SHARE-NAV-BEGIN> 9.78
<PER-SHARE-NII> 0.23
<PER-SHARE-GAIN-APPREC> 0.23
<PER-SHARE-DIVIDEND> (0.23)
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<PER-SHARE-NAV-END> 10.01
<EXPENSE-RATIO> 1.13
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM ACCOUNTING
RECORDS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH ACCOUNTING
RECORDS.
</LEGEND>
<SERIES>
<NUMBER> 102
<NAME> KEYSTONE TAX FREE INCOME FUND CLASS B
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> MAY-31-1998
<PERIOD-START> JUN-01-1997
<PERIOD-END> NOV-30-1997
<INVESTMENTS-AT-COST> 96,296,749
<INVESTMENTS-AT-VALUE> 101,440,413
<RECEIVABLES> 1,497,795
<ASSETS-OTHER> 39,646
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 102,977,854
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<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1,403,515
<TOTAL-LIABILITIES> 1,403,515
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 26,626,091
<SHARES-COMMON-STOCK> 2,644,273
<SHARES-COMMON-PRIOR> 2,974,366
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (187,726)
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> (63,979)
<ACCUM-APPREC-OR-DEPREC> (157,907)
<NET-ASSETS> 26,216,479
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 795,445
<OTHER-INCOME> 0
<EXPENSES-NET> (261,153)
<NET-INVESTMENT-INCOME> 534,292
<REALIZED-GAINS-CURRENT> 427,912
<APPREC-INCREASE-CURRENT> 218,944
<NET-CHANGE-FROM-OPS> 1,181,148
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (534,576)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 64,573
<NUMBER-OF-SHARES-REDEEMED> (420,079)
<SHARES-REINVESTED> 25,413
<NET-CHANGE-IN-ASSETS> (2,610,615)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> (61,042)
<OVERDIST-NET-GAINS-PRIOR> (883,232)
<GROSS-ADVISORY-FEES> (83,195)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (261,153)
<AVERAGE-NET-ASSETS> 27,665,972
<PER-SHARE-NAV-BEGIN> 9.69
<PER-SHARE-NII> 0.19
<PER-SHARE-GAIN-APPREC> 0.22
<PER-SHARE-DIVIDEND> (0.19)
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<AVG-DEBT-OUTSTANDING> 0
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM ACCOUNTING
RECORDS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH ACCOUNTING
RECORDS.
</LEGEND>
<SERIES>
<NUMBER> 103
<NAME> KEYSTONE TAX FREE INCOME FUND CLASS C
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> MAY-31-1998
<PERIOD-START> JUN-01-1997
<PERIOD-END> NOV-30-1997
<INVESTMENTS-AT-COST> 96,296,749
<INVESTMENTS-AT-VALUE> 101,440,413
<RECEIVABLES> 1,497,795
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<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 10,996,125
<SHARES-COMMON-STOCK> 860,374
<SHARES-COMMON-PRIOR> 1,225,559
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (208,360)
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> (813,321)
<ACCUM-APPREC-OR-DEPREC> (1,441,813)
<NET-ASSETS> 8,532,631
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 296,677
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<EXPENSES-NET> (97,669)
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<REALIZED-GAINS-CURRENT> 154,658
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<DISTRIBUTIONS-OF-GAINS> 0
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<NUMBER-OF-SHARES-SOLD> 6,816
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<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
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<OVERDIST-NET-GAINS-PRIOR> (353,293)
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<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (97,669)
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</TABLE>