Business, personal, family and military papers, correspondence, orders, bills, pictures, publications, engineering diagrams and blueprints. This collection contains the business papers of John S. Winthrop and Mrs. Susan Winthrop, including correspondence, plantation records, bills, orders, mortgages, tax information and bookkeeping records. There are also personal and family papers of the Winthrop family, including pictures of persons such as Sindey Alder and members of the Winthrop family, as well as the military papers for Captain Guy L. Winthrop. The collection contains a set of eight blueprints and designs, the business papers of Francis B. Winthrop, and a map of Burrow Hill Place.