Robert Knox Sneden was born in Annapolis Royal, Nova Scotia, Canada and moved to New York City in 1851 at age 19.
Starting from January 12, 1862, Sneden served on Samuel P. Heintzelman's III Corps staff, at first, as a draughtsman on map work, later, as a topographical engineer.
[4] Altogether, he sketched scenes of prison life in Savannah and Millen, Georgia, and in Florence and Charleston, South Carolina.
[6] Sneden contributed some of them to the Battles and Leaders of the Civil War,[7] a series of articles published between 1884 and 1887 in The Century Magazine and then reissued as a four-volume set of books.
In 1994, an art dealer approached the Virginia Historical Society about a Civil War archive that had languished in a Connecticut bank vault.
[2] In the fall of 2000, Sneden was rediscovered by the general public and the Civil war enthusiasts after about 300 pieces of his artwork were revealed in the Eye of the Storm exhibition and subsequent book, which became a bestseller.