- Spain9
- Communism3
- Soldiers3
- Americans2
- Spain, Ejercito Popular de la Republica. Brigada Internacional, XV2
- Anarchism1
- Bessie, Alvah Cecil, 1904-19851
- Borkenau, Franz, 1900-19571
- Documentary photography1
- Dos Passos, John, 1896-19701
- Fisher, Harry, 1911-1
- Forensic anthropology1
- Hemingway, Ernest, 1899-19611
- Murder1
- Robles Pazos, Jose1
- Social conflict1
- Social movements1
- Tisa, John1