William Kissam Vanderbilt II (March 2 1878 - January 8 1944) was a motor racing enthusiast and yachtsman and a member of the prominent United States Vanderbilt family. Born in New York City, the second child and first son of William Kissam Vanderbilt and Alva Erskine Smith, he was known by the nickname "Willie K" and until his father died was labeled as Vanderbilt Jr. instead of the more formal Vanderbilt II. Wikipedia
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