Literature
- Ahlmann, H. W:son The 14th of July Glacier. Scientific Results of the Norwegian-Swedish Spitzbergen Expedition 1934. Geografiska Annaler, p. 167–-217. Stockholm 1935.
- Hesselberg Th. and Birkeland B. J.: Säkulare Schwankungen des Klimas von Norwegen. Die Lufttemperature. Geofysiske Publikasjoner. Vol. XIV No. 4. Oslo 1940.
- Thorlacius Arni O.: Veòurbækur 1845–1891 (The period July 1857–Dec. 1858 missing). The National Library of Iceland, Lbs. 206–218, folio.
- Observationes Meteorologicae a 1. Jan. 1823 ad 1 Aug. 1837 in Islandia factae a Thorstensenio medico. Hafniae 1839.