REMOVE

1. Musicians.
2. Portrait photographs
3. Library of Congress Prints a …
4. 1919 or 1920

WHAT

1. Nitrate negatives (1)
2. Photographs (1)
3. Portrait photographs (1)
4. Violins. (1)

WHO

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

WHEN

1. 1869-1942 (1)
2. 1919 (1)
3. 1919 or 1920 (1)