REMOVE

1. Nitrate negatives
2. Photographs
3. Portrait drawings
4. Library of Congress Prints a …
5. Unknown
6. 1896

WHAT

1. Nitrate negatives (1)
2. Portrait drawings (1)
3. negative (1)

WHO

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

WHEN

1. 1942 (1)
2. between 1896 and 1942 (1)