Captain D.W. (David William) Smith, Rough Sketch of the King’s Domain at Detroit, 1790. Courtesy of the Clements Library, University of Michigan. This rare, hand-drawn map of Detroit in the British period was identified and authenticated in 2016. Clements Library associate director and curator of maps Brian Leigh Dunnigan has pointed out that key features distinct to this map include the depiction of private landholder “encroachments” within the town walls. Landholders identified by Dunnigan thus far include the prominent slaveholders William Macomb (letter A), John Askin (letter D), and Captain Henry Bird (letter E). The map also shows the rivulet, Savoy Creek, flowing behind the settlement and the abatis, intertwined tree branches used as a defensive barrier, around the fort at the rear. Smith, the creator of the map, expressed support for slavery.