Literature
- Koldewey , K. 1871 . “The First German North Polar Expedition, 1868,” . Petermanns Geographische Mitteilungen , 28 : 56 Supplemental Volume
- _____ . 1874 . The German Arctic Expedition of 1869–70, and narrative of the wreck of the “Hansa”; in the ice , 583 London : Sampson Low, Marston, Low & Searle .
- _____ . 1874 . Die zweite deutsche Nordpolarfahet in den Jahren 1869 und 1870 unter der Führung des Kapitan Karl Koldewey [The Second German North Polar Expedition in 1869–70 under the command of Captain Karl Koldewey] , 962 Leipzig : Brockhaus .
- Krause , R. 1992 . “The period of founding of German polar research, 1865–1875,” . Berichte zur Polarforschung , : 375