Incidents of the war. Guides to the army of the Potomac. Berlin, Va., October, 1862.

Incidents of the War. Guides to the army of the Potomac. Berlin, Va., October, 1862.Members of the Secret Service department of the Army of the Potomac.Title from piece.Printed on recto: Alex. Gardner, Photographer. Entered according to act of Congress in the year 1865, by A. Gardner, in the Clerk's Office of the District Court of the District of Columbia. 511 7th St., Washington. Published by Philp & Solomons, Washington