REMOVE

1. Portrait photographs
2. Nitrate negatives
3. 1917 Dec
4. -2

WHAT

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

WHO

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

WHEN

1. 1869-1942 (1)
2. 1917 Dec (1)
3. 2 (1)