REMOVE

1. houses
2. clouds
3. rooftops
4. sky
5. hills

WHAT

1. Information Forms (hierar … (3)
2. art museums (3)
3. catalogs (documents) (3)
4. ephemera (general) (3)
5. exhibition records (3)

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WHERE

1. New York, New York (3)

WHO

1. Metropolitan Museum of Ar … (3)

WHEN

1. 1979 (3)
2. 1979-1980 (3)
3. 1980 (3)