REMOVE

1. holidays
2. musicians
3. deaths
4. ink
5. photographs
6. black-and-white photography

WHAT

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

More 

WHO

1. Campbell, Sandra L. Still (1)
2. Sandra L. Still Campbell; … (1)

WHEN

1. 1961 (1)
2. after 1961 (1)