REMOVE

1. negative
2. Nitrate negatives
3. Fires.
4. Portrait photographs
5. Library of Congress Prints a …
6. 1906 Apr

WHAT

1. Earthquakes. (1)
2. Nitrate negatives (1)
3. Photographs (1)
4. Portrait photographs (1)

WHO

1. Genthe, Arnold (1)
2. Library of Congress Print … (1)

WHEN

1. 1869-1942 (1)
2. 1906 (1)
3. 1906 Apr (1)