Johannes Repp and his family are recorded on the 1798 census of Kamenka in Household No. Km010.
The death of Johannes Repp in 1820 is recorded on the 1834 census of Kamenka in Household No. 140.
- 1834 Kamenka Census (Household No.140).
- 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): Km010.