<PAGE> PAGE 1
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002 A000000 4550 MONTGOMERY AVENUE SUITE 1000N
002 B000000 BETHESDA
002 C000000 MD
002 D010000 20814
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<PAGE> PAGE 2
022 C000006 121131
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<PAGE> PAGE 3
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<PAGE> PAGE 4
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SIGNATURE WILLIAM TARTIKOFF
TITLE GENERAL COUNSEL
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000701219
<NAME> CALVERT CASH RESERVES
<SERIES>
<NUMBER> 333
<NAME> INSTITUTIONAL PRIME FUND
<MULTIPLIER> 1000
<S> <C>
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</TABLE>
