REMOVE

1. Group portraits
2. Acetate negatives
3. Library of Congress Prints a …
4. Unknown
5. 1896
6. between 1896 and 1942

WHAT

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

WHO

1. Library of Congress Print … (1)

WHEN

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