REMOVE

1. Group portraits
2. Horseback riding.
3. Autochromes
4. Library of Congress Prints a …
5. Genthe, Arnold

WHAT

1. Group portraits (2)
2. Horseback riding. (2)
3. Photographs (2)
4. Portrait photographs (2)

WHO

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

WHEN

1. 1869-1942 (2)
2. 1906 (2)
3. 1942 (2)
4. between 1906 and 1942 (2)