projected from a trigonometrical survey executed under the orders of Lieut. Col. W.F. Raynolds, Corps of Engrs., Brvt. Brig. Genl. U.S.A. in 1864, 65, 66, 67, 68 & 69 and of Major C.B. Comstock, Corps of Engrs., Brvt. Brig. Genl. U.S.A. in 1870 & 71 ; and from local surveys made under the orders of Capt. J.N. Macomb, Topl. Engineers in 1855, of Capt. G.G. Meade, Topl. Engrs. in 1859, and of Col. J.D. Graham, Corps of Engrs. in 1863 ; published in 1872