Ordre général du Corps of Engineers annonçant la mort du G.l Humphreys, Décembre 1883. Washington
From Gettysburg to the Rapidan, the Army of the Potomac, July 1863 to April 1864, by Andrew A. Humphreys ...
From Gettysburg to the Rapidan. the Army of the Potomac, Etc.
Extract from the Report of General A.A. Humphreys, Chief of Engineers, War Department
Charles Humphreys
Annual Report of Captain A.A. Humphreys, Topographical Engineers, in Charge of Office of Explorations and Surveys, War Department, December, 1858
Annual Report of Captain A.A. Humphreys, Topographical Engineer, in Charge of Office of Explorations and Surveys, War Department, December, 1858
The Virginia Campaign of '64 and '65
The Pennsylvania Campaign of 1863
Progress-Report Upon Geographical and Geological Explorations and Surveys West of the 100th Meridian, in 1872, Under the Direction of Brig. Gen. A. A. Humphreys by George M. Wheeler
The Virginia Campaign of '64 and '65. The Army of the Potomac, and the Army of the James
The Virginia Campaign, 1864 And 1865
Extract from the Annual Report of the Secretary of War, and Report of Capt. A.A. Humphreys, Topographical Engineers
The Virginia Campaign, 1864 and 1865
Physics and Hydraulics of the Mississippi
Progress-Report Upon Geographical and Geological Explorations and Surveys West of the One Hundredth Meridian, in 1872
A.A. Humphreys and John Torrey Correspondence
Extract from the Annual Report of the Secretary of War
The Virginia Campaign of '64 [and '65]