"Surveyor General's Office, Dubuque, October 24th 1851, George B. Sargent, Sur.r Genl."
At head of title: (A).
Shows all of Wisconsin and a portion of Minnesota, with township surveys in progress in portions of the St. Croix region, central Wisconsin, and the Menominee Cession lands.
Includes legend in lower left explaining symbols for township survey status on map.
From Congressional serial set 1851.