REMOVE

1. people, at work
2. albumen print
3. North American; American
4. US, ID
5. 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)