District of Winterthur  Map drawn by Tschubby
Own work using:

File:Karte_Bezirk_Winterthur.png
Based on Antoine Henri Jomini, baron de. Mountain warfare illustrated by the campaign of 1799 in Switzerland: being a translation of the Swiss narrative, compiled from the works of the Archduke Charles, Jomini, and other...London: Henry S. King, 1875. p. 108–109.
Karte_Bezirk_Winterthur.png: Tschubby
derivative work: Auntieruth55 (talk)