On June 17, 1914 William S. Dennis was replaced by Harry Haff, son of Hank Haff as the captain of the yacht. Vanitie lost to Resolute in the 1914 trials. Defense of the cup was put off during World War I. The 1920 campaign was not successful and Vanitie lost 7-4 in the final selection series, again against Resolute which went on to successfully defend the America's Cup on behalf of the New York Yacht Club.
- "Harry Haff New Vanitie Skipper. But the Cochran Cup Defense Yacht May Yet Be Sailed by an Amateur". New York Times. June 17, 1914. Retrieved 2010-12-27.
- "Vanitie Home First, But Resolute Wins. Alexander S. Cochran's Yacht Leads All the Way, but Handicap Beats Her.". New York Times. July 9, 1914. Retrieved 2010-12-04.
- "Vanitie Beats Resolute Easily In First Test. Cochran Cup Yacht's Victory So Complete Time Allowance Is Not Figured.". New York Times. January 13, 1920. Retrieved 2010-12-04.