Narrative of a second voyage in search of a north-west passage, and of a residence in the Arctic regions during the years 1829, 1830, 1831, 1832, 1833 / By Sir John Ross ... Including the reports of ... Captain James Clark Ross ... and the discovery of the northern magnetic pole.

Licence: Public Domain Mark

Credit: Narrative of a second voyage in search of a north-west passage, and of a residence in the Arctic regions during the years 1829, 1830, 1831, 1832, 1833 / By Sir John Ross ... Including the reports of ... Captain James Clark Ross ... and the discovery of the northern magnetic pole. Source: Wellcome Collection.