Haverhill Fire Department Fire Fighting Museum: Includes historical fire alarm system information, engine history, events, donations and links.Haverhill Historical Society: Provides information about the Buttonwoods Museum. Includes tours, programs, volunteer opportunities, calendar and contact information.John Greenleaf Whittier Homestead: Includes history, events, bibliography and multimedia section.Winnekenni Castle: Includes events, directions, history, functions and theatre workshop information.Winnekenni Castle Foundation, Inc.: Contact information for the castle.