Topographic Atlas of Switzerland

Its publication was begun by the Federal Topographic Bureau under Hermann Siegfried [de], and continued from 1870 to 1926.

[1] During this period the individual maps were drawn by different lithographers, including Walter Hauenstein, Georg Christian von Hoven and Rudolf Leuzinger.

However, the Siegfried Map offered greater precision than the Dufour Map, by using a scale of 1:25,000 for the Swiss Plateau, the French Prealps, the Jura Mountains and southern Ticino, and a scale of 1:50,000 for other mountain regions and the Swiss Alps.

Another significant departure from the Dufour Map was the presence of contours to symbolize the relief (a granularity of 10 metres (33 ft) for the 1:25 000 pages, and 30 metres (98 ft) for the 1:50 000 pages).

In addition, three colors were used directly for printing, whereas the Dufour Map was initially monochrome.