1969. G.W. & C.B. Colton & Co. Entered according to act of Congress in the year 1865 by G.W. & C.B. Colton ...; Prime meridians: Greenwich and Washington.; Includes inset of "Pla... G.W. & C.B. Colton (New York), 1865.
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1969. Bounding Box (W,S,E,N): -93.9791,44.4981,-92.8021,45.361 1:62,500 Ecological Study for the Twin Cities Metropolitan Area. Wallace, McHarg, Roberts and Todd.