Ludwig Heinze and his family are recorded on the 1798 census of Susannental in Household No. Ss13.
They are recorded on the 1834 census of Susannental in Household No. 24.
- 1834 Susannental Census (Household No. 24).
- 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): Ss13.