The Libraries at Mystic Seaport Museum
The Libraries at Mystic Seaport Museum house a wealth of information on New England seafarers and their vessels. The Daniel S. Gregory Ships Plans Library has 100,000 architectural drawings of watercraft constructed between 1827 and 2004, only a portion of which are online. Of greater genealogical interest is the G. W. Blunt White Library, among whose online offerings are the New London Crew List Index: 1803-1878, the Seamen's Protection Certificate Register Database (31,047 certificates issued from 1796-1871), and a long list of maritime-themed e-books and manuscripts. The searches are case sensitive, so be sure to capitalize your queries as necessary.