Christoph Brack and his family are recorded on the 1798 census of Schäfer in Household No. Sf32.
The death of Christoph Brack in 1825 is recorded on the 1834 census of Schäfer in Household No. 11.
- 1834 Schäfer Census (Household No. 11).
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Sf32.