REMOVE

1. Nitrate negatives
2. negative
3. Portrait photographs
4. Opera singers.
5. Genthe, Arnold
6. 1932 Apr. 6

WHAT

1. Nitrate negatives (1)
2. Opera singers. (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. 1932 (1)
3. 1932 Apr. 6 (1)