Georg Heidt and his family are recorded on the 1798 census of Basel in Household No. Bs18.
In 1794, Johann Daniel Heidt moved from Basel to Zürich.
Daniel Heidt from Basel is recorded on the 1798 census of Zürich in Household No. Zr38.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Bs18, Zr38, Mv0137.