Cartographic Details: Scale 1:1,140,480. 18 miles to an in. From: U.S. 35th Cong., 1st sess., 1857-1858. Senate doc. -- volume 5, no. 11. -- (Serial set ; 922). At head of title: (H). In upper right: Sen. Ex. Doc. No. 11 & Ho. Ex. No. 2, 1st Sess., 35th Cong. 57 x 58 centimeters 1:1,140,480 General Minnesota Maps