Title: Lewis M. Haupt papers
Subjects: Correspondence, United States, Canals, Military railroads, United States. Bureau of Military Railroads
Places: Nicaragua
People: John Hay (1838-1905), Newton Diehl Baker (1871-1937), Andrew Carnegie (1835-1919), Theodore C. Search, John Tyler Morgan (1824-1907), William Jennings Bryan (1860-1925)