REMOVE

1. negative
2. Nitrate negatives
3. Panpipes.
4. Genthe, Arnold
5. Library of Congress Prints a …
6. 1869-1942

WHAT

1. Musicians. (1)
2. Nitrate negatives (1)
3. Photographs (1)

WHO

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

WHEN

1. 1911 (1)
2. 1942 (1)
3. between 1911 and 1942 (1)