Heinrich Hassenkampf, a farmer, and his wife Anna are recorded on an appendix to the 1767 census of Paulskaya in Household No. 41.
They are recorded on the 1798 census of Biberstein in Household No. Bb14.
The 1767 census records that Heinrich Hassenkampf came from the German village of Häsen.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Bb14.
- Pleve, Igor. Einwanderung in das Wolgagebiet 1764-1767 Band 3 (Goettingen: Der Göttinger Arbeitskreis, 2005): 359.