REMOVE

1. Nitrate negatives
2. Dancers.
3. Library of Congress Prints a …
4. Genthe, Arnold
5. between 1917 and 1920
6. 1869-1942

WHAT

1. Nitrate negatives (1)
2. Photographs (1)
3. negative (1)

WHO

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

WHEN

1. 1917 (1)
2. 1920 (1)
3. between 1917 and 1920 (1)