REMOVE

1. gelatin silver print
2. Photographs
3. gelatin silver print
4. study, tree
5. Callahan, Harry

WHAT

1. gelatin silver print (2)
2. study, tree (2)
3. architecture, urban (1)

WHERE

1. North American; American (2)
2. Peru, Cuzco (1)
3. US, IL, Chicago (1)

WHO

1. Callahan, Harry (2)
2. George Eastman House (2)

WHEN

1. 1956 (1)
2. 1974 (1)