REMOVE

1. stairs
2. sky
3. houses
4. rock
5. doors
6. 1966

WHAT

1. Visual Works (hierarchy n … (2)
2. buildings (structures) (2)
3. exterior views (2)
4. plants (2)
5. roads (2)

More 

WHERE

1. New Windsor, Maryland (1)
2. Westminster, Maryland (1)

WHO

1. Campbell, Sandra L. Still (1)
2. Clyfford Still; Still, Cl … (1)
3. Sandra L. Still Campbell; … (1)
4. Still, Clyfford (1)

Less

WHEN

1. 1969 (1)
2. 1975 (1)