b. 1840 — d. 1882
Timothy O'Sullivan (American, born Ireland, 1840–1882) commissioned by George Wheeler for the War Department, Corps of Engineers, U.S. Army
Born 1840 — Died 1882
Poplar Grove Church
Signal Tower on Elk Mountain, Maryland
Battery D, Fifth U.S. Artillery in action (Fredericksburg, VA)
Sensitive Plant
Snow Peaks, Bull Run Mining District, Nevada
Grand Canyon, Colorado River, Near Paria Creek, Looking West
View on Apache Lake, Sierra Blanca Range, Arizona
, 1863
, 1864