REMOVE

1. Nitrate negatives
2. Photographs
3. Artists.
4. Portrait photographs
5. Library of Congress Prints a …
6. between 1911 and 1935

WHAT

1. Nitrate negatives (1)
2. Portrait photographs (1)
3. negative (1)

WHO

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

WHEN

1. 1869-1942 (1)
2. 1911 (1)
3. 1935 (1)
4. between 1911 and 1935 (1)