Chapman, Silas: [Wisconsin]:

$1,750 · Offered by William Reese Company

CHAPMAN'S SECTIONAL MAP OF WISCONSIN, WITH THE MOST RECENT SURVEYS. A large, attractive map of Wisconsin, showing all the surveyed counties and many towns, and extending northward to include the unsurveyed areas. Chapman produced several pocket maps of Wisconsin, Minnesota, and Iowa. This version was copyrighted the previous year and is unrecorded in this configuration by Phillips.

Found via Rare Books Intel, a search across rare-book dealers, auction houses and marketplaces worldwide.