REMOVE

1. occupation, prison guards
2. event, prison shakedown
3. gelatin silver print
4. Photographs
5. interior, cell block
6. occupation, prison guards
7. US, TX

WHAT

1. event, prison shakedown (1)
2. gelatin silver print (1)
3. interior, cell block (1)
4. occupation, prison guards (1)

More 

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)