- Gospel Versus Gospel: Mission and the Mennonite Church, 1863-1944 (Studies in Anabaptist and Mennonite history)
- Peace, Faith, Nation: Mennonites and Amish in Nineteenth-Century America (Mennonite Experience in America)
- Mennonite and Nazi?: Attitudes Among Mennonite Colonists in Latin America, 1933-1945
- War, Peace, and Social Conscience: Guy F. Hershberger and Mennonite Ethics
- Edwin E. Witte: Cautious Reformer