USGS topographic maps of Minnesota are available from the Minnesota Geological Survey. These maps represent both the natural and man-made physical features of the land's surface and are the easiest means of determining the contour and elevation of the land. Features such as roads, trails, rivers, lakes, buildings, and political boundaries are printed on each map.
Topo: Scale 1:24,000 (1 inch = 2000 feet). $8.50
Topo: Scale 1:100,000 (1 inch - 1.5 miles) $9.50
Topo: Scale 1:250,000 (1 inch = 4 miles) $9.50
Topo: Scale 1:500,000 (entire state-wall map) $9.50
Isle Royale National Park: Scale 1:62,500. $9.50
Voyageurs National Park:. Metric scale 1:50,000. $9.50
Superior National Forest: Scale 1:126,720. $12.50
The State topographic map index book is available free over the counter. Receive a free topo index by calling 1-888-ASK-USGS (275-8747).
Also on the web, see the following sites:
USGS Map Database
Minnesota Department of Natural Resources, Topography Online.