Between the early 20th century and the 1950s. what U.S. city was generally considered the "divorce capital of the world", even going so far as to proclaim it in tourist materials? The source of this claim emanates from the proximity of the city's lodging and entertainment to its courthouse and then its home state lowering its residency requirements to a mere six weeks. High profile divorces that occurred there included those of Carnegie Steel president William Ellis Corey, Mary Pickford, Jack Dempsey, Rita Hayworth, and Gloria Vanderbilt, among others.