As populations along the Upper Mississippi River Valley began to prosper, steamboats, railroads, and stage routes developed to connect promising population centers and trading routes. In this fascinating and detailed map, Tanner shows county lines already configured in 1841, and established and proposed routes, including canal routes and distances from place to place along the leading roads.

Tanner's maps often featured detailed insets, and ledgers. Most notable on this map is the inset for the Lead Mining Region between Galena and the Wisconsin River; detailed listings of Steam Boat distances from Shawneetown on the Ohio River to St. Louis on the Mississippi River, and a detailed listing of distances between Steam Boat stops on the Mississippi River from St. Louis to Prairie du Chien., Wisconsin.

All sizes are approximate.