Colton's Delaware and Maryland.
G.W. & C.B. Colton & Co.
J.H. Colton & Co.
New York : G.W. and C.B. Colton,
1873.
Relief shown by hachures.
Prime meridians: Greenwich and Washington.
Cover title: Colton's Map of Maryland and Delaware.
Inset: District of Columbia.
"Entered according to Act of Congress in the year 1855, by J.H. Colton & Co. in ... the Southern district of New York."
Bartholomew firm library.