REMOVE

1. sky
2. stairs
3. shadows
4. cardigans

WHAT

1. automobiles (2)
2. autumn (1)
3. barriers (1)
4. black-and-white film (1)
5. bridges (built works) (1)
6. color film (film) (3)
7. concrete block (1)
8. cows (animals) (1)
9. exterior views (3)
10. farmhouses (2)
11. farms (4)
12. fences (1)
13. fields (land) (2)
14. flower (plant material) (1)
15. highways (1)
16. horizon line (2)
17. horses (animals) (1)
18. indoor tennis courts (1)
19. landscapes (representatio … (4)
20. Lincoln Continental autom … (2)
21. machinery (1)
22. plows (agricultural equip … (1)
23. polo (field sport) (1)
24. polo clubs (built complex … (1)
25. polo fields (1)
26. roads (4)
27. snow (precipitation) (2)
28. spring (season) (1)
29. sunlight (1)
30. tennis (1)
31. tractors (agricultural eq … (1)
32. trees (4)
33. utility poles (1)
34. Visual Works (hierarchy n … (4)
35. winter (2)
36. woods (plant communities) (1)
37. yards (areas) (1)

WHERE

1. Westminster, Maryland (2)
2. 1445 Old Westminster Road … (1)
3. Aiken, South Carolina (1)
4. Carroll County, Maryland (1)
5. Maryland Route 27 (state … (1)

More 

WHO

1. Still, Patricia (3)
2. Still, Clyfford (1)

WHEN

1. 1966 (4)
2. 1966 October (1)
3. circa 1966 March (1)