REMOVE

1. National parks & reserves.
2. Photographs
3. Glass negatives
4. Rock formations.
5. 1869-1942
6. 1928
7. between 1899 and 1928

WHAT

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

WHO

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

WHEN

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