REMOVE

1. shipyards
2. railroads
3. automobiles
4. seascapes
5. campuses
6. buildings (structures)
7. 1970

WHAT

1. Visual Works (hierarchy n … (1)
2. atmospheric perspective (1)
3. banks (landforms) (1)
4. black-and-white film (1)

More 

WHERE

1. Maryland (1)

WHEN

1. 1960 (1)
2. between 1960 - 1970 (1)