Correspondence, construction agreements, charter parties, outfitting documents, accounts, operating expenses, logs, journals, and scrapbooks, relating chiefly to America's Cup races and yachts. Also includes clippings, telegrams, and other items relating to the Lord Dunraven/Charles Iselin controversy. Other topics include the construction, outfitting, and preparation of the COLUMBIA for the 1899 race and the DEFENDER (1895), INTREPID, RELIANCE (1903), and VIGILANT (1893).

The collection consists of miscellaneous papers, correspondence, notes, clippings, pamphlets, and specifications relative to the yachting activities of W. P. Stephens. Included is a series of specifications for approximately 500 boats which are arranged alphabetically by the boat's name.