REMOVE

1. people, at work
2. people, prisoners
3. Photographs
4. gelatin silver print

WHAT

1. gelatin silver print (1)
2. people, at work (1)
3. people, prisoners (1)

WHERE

1. North American; American (1)
2. US, TX (1)

WHO

1. George Eastman House (1)
2. Lyon, Danny (1)

WHEN

1. 1967 (1)
2. 1968 (1)
3. ca. 1967-68 (1)