REMOVE

1. hills
2. trees
3. sky
4. 1960

WHAT

1. atmospheric perspective (2)
2. automobiles (1)
3. banks (landforms) (1)
4. black-and-white film (2)
5. fields (land) (1)
6. forests (plant communitie … (2)
7. horizon line (1)
8. landscapes (representatio … (2)
9. mountains (1)
10. plants (1)
11. roads (1)
12. utility poles (1)
13. valleys (landforms) (1)
14. Visual Works (hierarchy n … (2)

WHERE

1. Maryland (1)

WHEN

1. 1940 (1)
2. 1970 (1)
3. between 1940 - 1960 (1)
4. between 1960 - 1970 (1)

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