REMOVE

1. Nitrate negatives
2. Photographs
3. Portrait photographs
4. Unknown
5. between 1896 and 1942
6. 1896

WHAT

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

WHO

1. Library of Congress Print … (2)

WHEN

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