REMOVE

1. Portrait photographs
2. Photographs
3. Acetate negatives
4. Library of Congress Prints a …
5. 1921
6. between 1921 and 1937

WHAT

1. Acetate negatives (1)
2. Portrait photographs (1)
3. negative (1)

WHO

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

WHEN

1. 1869-1942 (1)
2. 1937 (1)
3. between 1921 and 1937 (1)