J.H. Colton & Co.Prime meridians: Greenwich and Washington.; Insets: Wolf Island ; Vicinity of the Welland Canal.; "Entered according to Act of Congress, in the Year 1855 by J.H. Colton ... for the Southern District of New York."; In margin of copy 2: "No. 6."29 x 37 centimetersJPEGUMN_ALMA:9931948040001701engJ.H. Colton (New York)PublicCanada West, or, Upper CanadaMapsCanada1855University of Minnesota