Multi-colored map that was published in the Atlas to Accompany the Official Records of the Union and Confederate Armies, 1861-1865. Imprint: Battle Of Mechanicsville, Va., June 26 and 27, 1862. 9th Penn. Reserve Corps Division, Porter's Army Corps. Accompanying report of Brig. Gen. T. Seymour, U.S. Army. Includes scale of miles and marks the Union and Confederate positions. 5 x 6.