Railroad map of Michigan prepared for the Commissioner of Railroads by O.W. Gray & Son.
Entered according to act of Congress in the year 1874 by G.W. & C.B. Colton & Co. ... Appears in Michigan Railroad Commission. Fourth annual report. 1876, and in McCracken, S. B. The state of Michigan. Lansing, 1876. Includes inset of "part of Michigan" (western Upper Peninsula). 1 map: hand col.; 58 x 40 cm
G.W. & C.B. Colton & Co., Michigan. Department of Commissioner of Railroads, and O.W. Gray & Son