Geologisk Kart over det Söndenfjeldske Norge

Maps from "Geologisk Kart over det Söndenfjeldske Norge", ved Tellef Dall & Theodor Kjerulf. J. C. Richter. Optaget ifölge Foranstaltning af Den Kongelige Norske Regjerings. Departement for det Indre. Lithog farvetrykt I Carl Schwenzens Off: Christiana. Lith at Guttorm Jacobsen ["Geological Map of Southern Norway", by Tellef Dall & Theodor Kjerulf. J. C. Richter. Surveyed according to the provisions of the Royal Norwegian Government's Department of the Interior. Lithographed and color printed at Carl Schwenzens' establishment: Christiana. Lithography by Guttorm Jacobsen.] (1863-1865)