REMOVE

1. Photographs
2. negative
3. Rock art.
4. Library of Congress Prints a …
5. Genthe, Arnold
6. Library of Congress Prints a …
7. 1899

WHAT

1. Glass negatives (1)
2. Rock art. (1)

WHO

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

WHEN

1. 1869-1942 (1)
2. 1928 (1)
3. between 1899 and 1928 (1)