testing if ever necessary. Patricia Ludwig did file a lawsuit in the 1990s after his death, but DNA analysis proved Ludwig was not her father, and the case was dismissed. Several months after his divorce, Ludwig married Gertrude Virginia "Ginger" Higgins (January 13, 1897 – April 8, 1993), a widow with three children from a previous marriage. They lived in the penthouse at the Park Cinq, a co-op in Manhattan, and remained married until his death there on August 27, 1992. See also American Petroleum Transport Corporation List of wealthiest historical figures List of richest Americans in history References Bibliography English Dero A. Saunders., "The Wide Oceans of D. K. Ludwig," Fortune, May 1957. "Ex-Wife sues Tycoon Ludwig for 10 million", San Francisco Chronicle, 27 January 1978. "Twilight of a Tycoon" (Time, November 30, 1978, p. 77), available on-line. James R. Arnold, North American Heritage, October 1985 (vol. V11, no. 3). Other languages Michel Braudeau, « Daniel Ludwig avait rêvé trop tard », first published in Le Monde, 17 July 2003, collected in Le rêve amazonien, éditions Gallimard, 2004 (). External links Ships built by Daniel K. Ludwig, t2tanker website Biography, Ludwig Institute for Cancer Research website. Great American Business Leaders Infoplease New York Times Magazine obituary, 1992 "Daniel Ludwig's Floating Factory", Time, 19 June 1978 Exportadora de Sal, SA Obituary of Charles P. Ludwig, DK's uncle in Otsego, NY Morton Smerling, "Capt. Ludwig, 94, Is a Genuine Old Salt", article includes photo of Capt. Lancaster Columbia Ludwig, DK's uncle Obituary: Capt. L.C. Ludwig, Age 99", South Haven Tribune, 17 May 1954 (DK's uncle Lancaster C. Ludwig, 1855-1954) 1897 births 1992 deaths 20th-century American businesspeople People from South Haven, Michigan American billionaires 20th-century American philanthropists People from Port Arthur, Texas American people of German descent