In 1853 he joined the Pacific Railroad Survey led by Isaac Stevens, and in 1856 resigned from the United States Army to pursue natural history fulltime, publishing several works on the life of the Pacific Northwest.
Upon the outbreak of the American Civil War, Suckley rejoined the Army, and worked as a surgeon throughout the war. He died in New York City a few years after the war.
Works[edit | edit source]
- (with James G. Cooper) Natural History of Washington Territory (1859)