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Darwin Correspondence Project

Otto Kratz


German-born businessman in the United States. Superintendent of the Julius Robert Diffusion Process Company in New Orleans; the company was concerned with processing sugarcane. Took American citizenship, 1873. Was living in Freiburg im Breisgau, Germany, when he died in Halle.


Halle (Saale), Germany, deaths, 1874–1957 (, accessed 11 June 2020)

letter from Otto Kratz, 12 July 1871


United States Federal Census 1870 (New Orleans, Orleans, Louisiana 10/378A) (, accessed 11 June 2020)

U.S. passport applications, 1795–1925 (, accessed 11 June 2020)


NUC: The national union catalog. Pre-1956 imprints. 685 vols. and supplement (69 vols.). London and Chicago: Mansell. 1968–81.