REMOVE

1. Horse shows.
2. Genthe, Arnold
3. 1933 or 1934

WHAT

1. Horse shows. (1)
2. negative (1)
3. Nitrate negatives (1)
4. Photographs (1)

WHO

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

WHEN

1. 1869-1942 (1)
2. 1933 (1)
3. 1933 or 1934 (1)