Relief shown by hachures. From Report of the Secretary of the Treasury communicating a report from the acting commissioner of the General Land Office...Feb. 1, 1847. Washington, 1847 (S. Doc. 221, 29th Congress, 2d Session) 1 map: hand col.; 26 x 40 cm This map is in the public domain. Please attribute access and use of this digitized map to the Stephen S. Clark Library, University of Michigan Library.