REMOVE

1. pen and ink
2. Hospital ships.
3. War crimes.
4. Editorial cartoons
5. Library of Congress Prints a …
6. 1917

WHAT

1. Drawings and Watercolors (1)
2. Editorial cartoons (1)
3. Hospital ships. (1)
4. War crimes. (1)
5. World War, 1914-1918. (1)

WHO

1. Library of Congress Print … (1)
2. Rogers, W. A. (1)

WHEN

1. 1854-1931 (1)
2. 1917? (1)