Nelson Hackett was an Arkansas slave whose 1841 escape to Canada (then a colony of Great Britain) led to a campaign by his owner to have him extradited to the United States on charges of theft as a way of getting around the legal sanctuary that Canada provided to fugitive slaves. Hackett’s extradition aroused the ire of abolitionists on both sides of the border and ultimately resulted in a limitation of the 1842 Webster-Ashburton Treaty’s extradition provision. Nelson Hackett enters the historical record in June 1840 when he was acquired by Alfred Wallace, a wealthy Washington County plantation owner, storekeeper, and land speculator. Hackett was described as “a Negro dandy” of about thirty years of age. Slaves in the Arkansas …