REMOVE

1. trees
2. artists (visual artists)
3. hats
4. 1964

WHAT

1. black-and-white film (1)
2. eyeglasses (1)
3. fences (1)
4. landscapes (representatio … (1)
5. men (male humans) (1)
6. Niagara Falls (waterfall) (1)
7. parks (recreation areas) (1)
8. portraits (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)