REMOVE

1. landscape, camp
2. albumen print
3. landscape, waterfalls
4. Photographs
5. people, at work
6. September, 1868

WHAT

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

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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)