- CA MHCA 2684, 2895-2897
- Fonds
- 1939-1991
This fonds consists of Klassen's collection of poetry, sermon notes, research on doctors in Russia, and two manuscripts: "The Kronsweide Mennonite Church in Russia: Its Villages and Elders" and "Im Zyklus der Zeit"
Klassen, Isaac P., 1899-1996