Campaign maps, Army of the Potomac / prepared by command of Maj. Gen. George B. McClellan ; compilation under the direction of Brig. Gen. A.A. Humphreys, by Capt. H.L. Abbot ; engraved by W.H. Dougal ; Julius Bien & Co., photo lith.Abbot, Henry L1862no. 1. Yorktown to Williamsburg -- no. 2. Williamsburg to White House -- no. 3. White House to Harrison's Landing.Relief shown by hachures.Yale copy: each sheet comprises 4 sections, mounted on linen. "Photographed at the Coast Survey office." Shows nocartographic