REMOVE

1. Nitrate negatives
2. Portrait photographs
3. Genthe, Arnold
4. Library of Congress Prints a …
5. between 1918 and 1920

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. 1918 (1)
3. 1920 (1)
4. between 1918 and 1920 (1)