Longfellow House-Washington's Headquarters National Historic Site possesses a rich and varied collection of artifacts and archival materials. Fine arts, decorative arts, furnishings, books, textiles and clothing, toys, tools, and far more are to be found in the museum collections.
The archives hold the papers and photographs of four families associated with the site - Wadsworth, Longfellow, Appleton, and Dana - as well as photographs, plans, and records relating to the managment of the house as a museum since 1913. These are arranged and described in 27 collections. The museum and archival collections complement each other, giving the collections depth and exceptional research value.