Brig. General Herman Haupt: Illustrated biography and related links.
General Theory of Bridge Construction: Full text of Haupt's book published in 1853.
Herman Haupt - 1817-1905: Short biography and portrait from the Lincoln Institute.
Military bridges: Full text of Haupt's book published in 1864. Includes sections on designs for trestle and truss bridges for military railroads.
Wikipedia: Herman Haupt: Biography, portrait, works and related links.