Dufour Map
The 1:100,000 topographic map of Switzerland (Dufour Map) was the first official series of maps that encompassed the whole of the country. It was published in the period from 1845 to 1865 and thus coincides with the creation of the modern Swiss Confederation.
Federal Office of Topography swisstopo
Infodesk history
Seftigenstrasse 264
3084 Wabern
Seftigenstrasse 264
3084 Wabern