1. Colton's Minnesota Maps University Of Minnesota Public content 1867. G.W. & C.B. Colton & Co. Shows county boundaries as of 1870, a region of "Unceded Indian Lands" in the northwest, railroads, cities and towns, and extent of surveyed townsh... Published by G.W. and C.B. Colton & Co (New York, N.Y), 1867.