REMOVE

1. albumen print
2. Photographs
3. landscape, river valley
4. US, CA, Donner Summit
5. O'Sullivan, Timothy H.
6. George Eastman House

WHAT

1. albumen print (1)
2. landscape, mountain (1)
3. landscape, river valley (1)

WHERE

1. North American; American (1)
2. US, CA, Donner Summit (1)

WHO

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

WHEN

1. 1867 (1)