Lloyd's official map of the state of Virginia from actual surveys by order of the executive, 1828 & 1859 / corrected and revised by J.T. Lloyd to 1862, from surveys made by Capt. W. Angelo Powell, of the U.S. Topographical Engineers.Lloyd, James T[1862], c1861.Differs from other 1862 edition in including a list of new maps to the right of the map title as well as "Deviation of the magnetic needle . . ." and "Memoranda" describing the sources and projection used to make the map, and lacking the warning to the ricartographic