REMOVE

1. Nitrate negatives
2. negative
3. Portrait photographs
4. between 1915 and 1918
5. 1869-1942

WHAT

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

WHO

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

WHEN

1. 1915 (1)
2. 1918 (1)
3. between 1915 and 1918 (1)