REMOVE

1. Spain
2. graphite pencils
3. Gettysburg, Pennsylvania
4. Baltimore, Maryland

WHAT

1. Visual Works (hierarchy n … (1)
2. atmospheric perspective (1)
3. barns (1)
4. black-and-white film (1)
5. buildings (structures) (1)

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WHERE

1. New Windsor, Maryland (1)

WHEN

1. 1967 (1)
2. ca. 1967 (1)