Subjects
- Flags1
- Maps (documents)1
- Newspapers1
- Pacifism1
- Pamphlets1
- Photographic prints1
- Pictures (object genre)1
- Popular music -- World War, 1914-19181
- Postcards1
- Posters, Australian1
- Posters, Austrian1
- Posters, Belgian1
- Posters, British1
- Posters, Bulgarian1
- Posters, Czech1
- Posters, Dutch1
- Posters, East Indian1
- Posters, Estonian1
- Posters, Finnish1
- Posters, German1