REMOVE

1. Portrait photographs
2. Nitrate negatives
3. Library of Congress Prints a …
4. Unknown
5. between 1896 and 1942

WHAT

1. Nitrate negatives (2)
2. Photographs (2)
3. Portrait photographs (2)
4. negative (2)
5. Group portraits (1)

WHO

1. Library of Congress Print … (2)

WHEN

1. 1896 (2)
2. 1942 (2)
3. between 1896 and 1942 (2)