Map of the Lake Minnetonka area showing lakes, bays, depths, channels, buoys, reefs, islands, points, towns, villages, parks, railroads, and all public roads. Depths are shown as one foot below the crest of Grays Bay Dam 929.4 feet. Key lists symbols for public docks, schools, churches, golf clubs and public beaches, and includes an explanation of the buoy system of Lake Minnetonka. Placement of buoy markings and channels was made by Minnetonka Dredging Company, Excelsior. Index lists over 150 place names. Scale indicates feet and statute miles, dated 1941.