REMOVE

1. negative
2. Nitrate negatives
3. Sheep.
4. Landscape photographs
5. Genthe, Arnold
6. Library of Congress Prints a …
7. 1869-1942

WHAT

1. Landscape photographs (1)
2. Nitrate negatives (1)
3. Photographs (1)

WHO

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

WHEN

1. 1899 (1)
2. 1928 (1)
3. between 1899 and 1928 (1)