1. British North America Maps University Of Michigan Public content 1834. Baldwin & Cradock and J. & C. Walker (Firm). 1 map ; 12 1/2 x 15 1/2 in. "Engraved by J. & C. Walker.".
2. Côte orientale du Grönland Maps University Of Michigan Public content 1893. 1 map : col. ; 40 x 23 cm Shows Hartvig's explorations on the west coast of Greenland.