Author Humphreys, A. A. (Andrew Atkinson), 1810-1883

From Gettysburg to the Rapidan the Army of the Potomac July 1863 to April 1

Report Upon United States Geographical Surveys West of the One Hundredth Meridian 3

Report Upon the Physics And Hydraulics of the Mississippi River; Upon the Protection of the Alluvial Region Against Overflow: And Upon the Deepening of the Mouths: Based Upon Surveys And Investigations Made Under the Acts of Congress Directing the Topogra