REMOVE

1. parks (recreation areas)
2. landscapes (representations)
3. fences

WHAT

1. artists (visual artists) (1)
2. black-and-white film (1)
3. eyeglasses (1)
4. hats (1)
5. men (male humans) (1)
6. Niagara Falls (waterfall) (1)
7. portraits (1)
8. trees (1)
9. Visual Works (hierarchy n … (1)

WHERE

1. Niagara Falls, Ontario, C … (1)

WHO

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

WHEN

1. 1964 (1)