REMOVE

1. trees
2. automobiles
3. cityscapes (representations)
4. grain elevators

WHAT

1. Jaguar Mark series automo … (1)
2. Visual Works (hierarchy n … (1)
3. bridges (built works) (1)

More 

WHERE

1. New York (1)
2. Pennsylvania (1)

WHO

1. Still, Patricia (1)

WHEN

1. 1964 (1)
2. circa 1964 December (1)