REMOVE

1. paths
2. clouds
3. trees
4. roads
5. rivers
6. barriers

WHAT

1. autumn (1)
2. color film (film) (1)
3. exterior views (1)
4. highways (1)
5. hills (1)
6. horses (animals) (1)
7. landscapes (representatio … (1)
8. portraits (1)
9. Visual Works (hierarchy n … (1)
10. water (1)

WHERE

1. 1445 Old Westminster Road … (1)
2. Carroll County, Maryland (1)
3. Sam's Creek Road, Carroll … (1)
4. Stone Chapel Road, Carrol … (1)

More 

WHO

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

WHEN

1. 1972 (1)
2. circa 1972 November (1)