939906 Map of West Arctic America showing the tracks of HMS Enterprise and Investigator in 1850-1854 (colour litho) by English School, (19th century); Private Collection; (add.info.: Enterprise = red; Investigator = blue; Investigator was used for the McClure Arctic Expedition to search for the lost Franklin expedition; first to successfully transit the Northwest Passage; Enterprise used in expedition led by Richard Collinson 1850 - 1855 to search for the lost Franklin expedition;); The Stapleton Collection; English, out of copyright.