REMOVE

1. railroads
2. farms
3. New York
4. Pennsylvania

WHAT

1. automobiles (1)
2. bridges (built works) (1)
3. cityscapes (representatio … (1)
4. clouds (1)
5. color film (film) (1)
6. exterior views (1)
7. grain elevators (1)
8. horizon line (1)
9. Jaguar Mark series automo … (1)
10. landscapes (representatio … (1)
11. rivers (1)
12. roads (1)
13. trees (1)
14. utility poles (1)
15. Visual Works (hierarchy n … (1)
16. woods (plant communities) (1)

WHO

1. Still, Patricia (1)

WHEN

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