Heinrich Herzog and his family are recorded on the 1798 census of Kutter in Household No. Kt18.
The death of Heinrich Herzog in 1826 is recorded on the 1834 census of Kutter in Household No. 70.
- 1834 Kutter Census (Household No. 70).
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga: Economy, Population, and Agriculture (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Kt18.