- eBookTrashing the PlanetStuart A. Kallen
- eBookA Journey with Christopher ColumbusStuart A. Kallen
- eBookNavajo Code TalkersStuart A. Kallen
- eBookNative Peoples of the SubarcticStuart A. Kallen
- eBookNative Peoples of the ArcticStuart A. Kallen
- eBookWorld War II Spies and Secret AgentsStuart A. Kallen
- eBookLocutores de claves navajos (Navajo Code Talkers)Stuart A. Kallen
- eBookA Journey with Francisco Vázquez de CoronadoStuart A. Kallen