Graham, J. D. (James Duncan), 1799-1865United States. Army. Corps of Topographical EngineersThe soundings are in feet & tenths of a foot. "Accompanying Lt. Colonel J.D. Graham's annual report (no. 161) to Chief Topograpical Engineer, dated November 15th 1856." Includes text. "Map G. No. 58." 1 map; 80 x 103 cmJPEGc43b3e4f-a2d4-4aec-90b1-3cbedd6772d4engPublicChicago harbor & bar, Illinois from survey made between the 17th of August & the 2nd of September 1858 under the direction of Brevet Lieut. Col. J.D. Graham, Major U.S. Top. Engineers. Superintending Engineer of Lake Harbor Works.MapsIllinois--ChicagoIllinois1858University of Michigan