REMOVE

1. landscape, river valley
2. landscape, mountain
3. albumen print
4. North American; American
5. US, CA, Donner Summit

WHAT

1. Photographs (1)
2. albumen print (1)
3. landscape, mountain (1)
4. 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)