Special List No. The file designation 163. Colton's Delaware and Maryland, Published by J. H. Colton . . . 1 inch to ca.
Relief is shown by hachures.
Map includes parts of adjoining States and an inset map of the District of Columbia at a scale of 1 inch to 3 miles. Filed as Ref. 1 inch to ca. County names and boundaries, towns and cities, steam and electric railroad lines, and drainage features. Subject to correc- tions.