Over a three-year period from 1837 to 1939, operating from a base-camp at Fort Confidence on Great Bear Lake, the expedition achieved its goal. Despite serious problems with sea ice, Dease and Simpson, in some of the longest small-boat voyages in the history of the Arctic, mapped the remaining gaps in a model operation of efficient, economical, and safe exploration. Thomas Simpson's narrative, the standard source on the expedition, claimed the expedition's success for himself, stating "Dease is a worthy, indolent, illiterate soul, and moves just as I give the impulse." In From Barrow to...