REMOVE

1. Horseback riding.
2. Nitrate negatives
3. Genthe, Arnold
4. between 1911 and 1936

WHAT

1. Horseback riding. (1)
2. Nitrate negatives (1)
3. Photographs (1)
4. negative (1)

WHO

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

WHEN

1. 1869-1942 (1)
2. 1911 (1)
3. 1936 (1)
4. between 1911 and 1936 (1)