REMOVE

1. trees
2. farms
3. roads
4. farmhouses
5. restaurants
6. snow (precipitation)
7. autumn

WHAT

1. Mercury Marquis automobil … (1)
2. Visual Works (hierarchy n … (1)
3. automobiles (1)
4. clouds (1)

More 

WHERE

1. Westminster, Maryland (1)

WHO

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

WHEN

1. 1972 (1)