REMOVE

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

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)