REMOVE

1. artifact, camera
2. animal, mules
3. Photographs
4. landscape, hot spring
5. albumen print
6. North American; American
7. US, NV, Sioux Spring

WHAT

1. albumen print (1)
2. animal, mules (1)
3. artifact, camera (1)
4. landscape, hot spring (1)

WHERE

1. North American; American (1)
2. US, NV, Sioux Spring (1)

WHO

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

WHEN

1. 1868 (1)