Correspondence, ledgers, journals, payrolls, time books, scrapbook, clippings, product information, and other materials relating to the Franklin G. Post & Son Boatyard in Mystic, Connecticut. Includes information on many of the boats designed and built by the yard, including the yacht ONKAHYA, launched in 1938.

The papers include charts, articles of association, certificates, by-laws, stockholder subscription, promissory notes, quitclaims deeds, mortgages, tax receipts, probates, licenses, stock receipts, powers of attorney, checks, correspondence, record books, account books, ledgers, and letterpress copybooks.