REMOVE

1. Nitrate negatives
2. Cities & towns.
3. Castles & palaces.
4. Library of Congress Prints a …

WHAT

1. Castles & palaces. (1)
2. Cities & towns. (1)
3. Nitrate negatives (1)
4. Photographs (1)
5. negative (1)

WHO

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

WHEN

1. 1869-1942 (1)
2. 1904 (1)
3. 1938 (1)
4. between 1904 and 1938 (1)