REMOVE

1. Nitrate negatives
2. negative
3. Portrait photographs
4. between 1917 and 1929

WHAT

1. Dancers. (1)
2. Nitrate negatives (1)
3. Photographs (1)
4. Portrait photographs (1)

WHO

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

WHEN

1. 1869-1942 (1)
2. 1917 (1)
3. 1929 (1)
4. between 1917 and 1929 (1)