REMOVE

1. Glass negatives
2. National parks & reserves.
3. Rock formations.
4. Library of Congress Prints a …

WHAT

1. Glass negatives (1)
2. Landscape photographs (1)
3. National parks & reserves … (1)
4. Photographs (1)
5. Rock formations. (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)