Pocket map showing the probable theatre of the war

Scale ca. 1:1,700,000.
LC Civil War Maps (2nd ed.), 1.1
Another issue.
Map of Maryland, Delaware, and parts of Pennsylvania and Virginia, "camps & forts" underlined in red and "prominent places" underlined in blue are not shown.
Insets: [Street pattern of the city of Baltimore] 9 x 12 cm.-[Map of the city and county of Washington, and the county of Alexandria] 13 x 13 cm. Contains a list of 12 buildings keyed by number to the map.
Handwritten note on the verso reads: No. 189, filed 9 May 1861, Aschbach & Traubel Prop.
Description derived from published bibliography.
Available also through the Library of Congress web site as raster image.