REMOVE

1. Nitrate negatives
2. negative
3. Boats.
4. Library of Congress Prints a …
5. between 1933 and 1942

WHAT

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

WHO

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

WHEN

1. 1869-1942 (1)
2. 1933 (1)
3. 1942 (1)
4. between 1933 and 1942 (1)