REMOVE

1. Glass negatives
2. negative
3. Rock art.
4. Genthe, Arnold
5. Library of Congress Prints a …
6. Library of Congress Prints a …
7. between 1899 and 1928

WHAT

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

WHO

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

WHEN

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