REMOVE

1. Group portraits
2. Nitrate negatives
3. Library of Congress Prints a …
4. Genthe, Arnold
5. 1932 or 1933

WHAT

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

WHO

1. Genthe, Arnold (1)
2. Library of Congress Print … (1)

WHEN

1. 1869-1942 (1)
2. 1932 (1)
3. 1932 or 1933 (1)