Colton's Washington and Oregon.J.H. Colton & Co[1853?]"Entered according to act of Congress in the year 1853 by J.H. Colton & Co. in the clerk's office of the district court of the United States for the southern district of New York."Covers Washington, Oregon, and Idaho.In lower right corner: No. 53.Prime meridians: Greenwich and Washington, D.C.cartographic