2 maps on 1 sheet : color ; 18 x 28 cm each on sheet 47 x 41 cm
OCLC
ocm35045968
Cartographic Data
Scale approximately 1:31,000
Entered according to the Act of Congress in the year 1855 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.
Text on verso.
The Cities of Pittsburgh and Allegheny, with parts of adjacent boroughs, Pennsylvania -- The City of Cincinnati, Ohio