<PAGE> PAGE 1
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001 A000000 SELIGMAN PENNSYLVANIA MUNICIPAL FUND
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011 B000001 8-25845
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011 C030001 10017
012 A000001 SELIGMAN DATA CORP. .
012 B000001 84-1895
<PAGE> PAGE 2
012 C010001 NEW YORK
012 C020001 NY
012 C030001 10017
013 A000001 DELOITTE & TOUCHE LLP
013 B010001 NEW YORK
013 B020001 NY
013 B030001 10281
014 A000001 SELIGMAN SERVICES, INC.
014 B000001 8-47717
015 A000001 INVESTORS FIDUCIARY TRUST COMPANY
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<PAGE> PAGE 3
022 A000006 JANNEY MONTGOMERY SCOTT INC.
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022 B000008 14-1391446
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022 A000009 A.G. EDWARDS & SONS, INC.
022 B000009 43-0895447
022 C000009 0
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<PAGE> PAGE 4
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<PAGE> PAGE 5
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<PAGE> PAGE 6
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<PAGE> PAGE 7
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<PAGE> PAGE 8
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<PAGE> PAGE 9
SIGNATURE THOMAS G. ROSE
TITLE TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER>001
<NAME> SELIGMAN PENNSYLVANIA MUNICIPAL FUND CL A
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-mos
<FISCAL-YEAR-END> MAR-31-1998
<PERIOD-END> MAR-31-1998
<INVESTMENTS-AT-COST> 29085
<INVESTMENTS-AT-VALUE> 31063
<RECEIVABLES> 460
<ASSETS-OTHER> 98
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 31621
<PAYABLE-FOR-SECURITIES> 971
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 157
<TOTAL-LIABILITIES> 1128
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 28339
<SHARES-COMMON-STOCK> 3686<F1>
<SHARES-COMMON-PRIOR> 3781<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 176
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1978
<NET-ASSETS> 29633<F1>
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 837<F1>
<OTHER-INCOME> 0
<EXPENSES-NET> (171)<F1>
<NET-INVESTMENT-INCOME> 666<F1>
<REALIZED-GAINS-CURRENT> 182
<APPREC-INCREASE-CURRENT> 453
<NET-CHANGE-FROM-OPS> 1316
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (666)<F1>
<DISTRIBUTIONS-OF-GAINS> (305)<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 53<F1>
<NUMBER-OF-SHARES-REDEEMED> (217)<F1>
<SHARES-REINVESTED> 69<F1>
<NET-CHANGE-IN-ASSETS> 415
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 307
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 75<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 171<F1>
<AVERAGE-NET-ASSETS> 30062<F1>
<PER-SHARE-NAV-BEGIN> 7.96<F1>
<PER-SHARE-NII> .18<F1>
<PER-SHARE-GAIN-APPREC> .16<F1>
<PER-SHARE-DIVIDEND> (.18)<F1>
<PER-SHARE-DISTRIBUTIONS> (.08)<F1>
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 8.04<F1>
<EXPENSE-RATIO> 1.14<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A only. All other data are fund level.
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER>004
<NAME> SELIGMAN PENNSYLVANIA MUNICIPAL FUND CL D
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-mos
<FISCAL-YEAR-END> MAR-31-1998
<PERIOD-END> MAR-31-1998
<INVESTMENTS-AT-COST> 29085
<INVESTMENTS-AT-VALUE> 31063
<RECEIVABLES> 460
<ASSETS-OTHER> 98
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 31621
<PAYABLE-FOR-SECURITIES> 971
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 157
<TOTAL-LIABILITIES> 1128
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 28339
<SHARES-COMMON-STOCK> 107<F1>
<SHARES-COMMON-PRIOR> 103<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 176
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1978
<NET-ASSETS> 860<F1>
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 23<F1>
<OTHER-INCOME> 0
<EXPENSES-NET> (8)<F1>
<NET-INVESTMENT-INCOME> 15<F1>
<REALIZED-GAINS-CURRENT> 182
<APPREC-INCREASE-CURRENT> 453
<NET-CHANGE-FROM-OPS> 1316
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (15)<F1>
<DISTRIBUTIONS-OF-GAINS> (8)<F1>
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 4<F1>
<NUMBER-OF-SHARES-REDEEMED> (2)<F1>
<SHARES-REINVESTED> 2<F1>
<NET-CHANGE-IN-ASSETS> 415
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 307
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2<F1>
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 8<F1>
<AVERAGE-NET-ASSETS> 834<F1>
<PER-SHARE-NAV-BEGIN> 7.95<F1>
<PER-SHARE-NII> .15<F1>
<PER-SHARE-GAIN-APPREC> .16<F1>
<PER-SHARE-DIVIDEND> (.15)<F1>
<PER-SHARE-DISTRIBUTIONS> (.08)<F1>
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 8.03<F1>
<EXPENSE-RATIO> 1.93<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class D only. All other data are fund level.
</FN>
</TABLE>
