REMOVE

1. people, at work
2. albumen print
3. landscape, camp
4. landscape, river
5. George Eastman House
6. O'Sullivan, Timothy H.

WHAT

1. Photographs (1)
2. albumen print (1)
3. landscape, camp (1)
4. landscape, river (1)
5. landscape, waterfalls (1)

WHERE

1. North American; American (1)
2. US, ID (1)

WHO

1. George Eastman House (1)
2. O'Sullivan, Timothy H. (1)

WHEN

1. 1868 (1)
2. September, 1868 (1)