REMOVE

1. hills
2. highways
3. buildings (structures)

WHAT

1. Visual Works (hierarchy n … (1)
2. automobiles (1)
3. cityscapes (representatio … (1)
4. color film (film) (1)

More 

WHERE

1. Buffalo, New York (1)
2. Harrisburg, Pennsylvania (1)

WHO

1. Still, Patricia (1)

WHEN

1. 1972 (1)
2. circa 1972 September (1)