The Elijah Boardman Papers (2012-07-0) consist of an initial donation of 97 volumes; (2012-14-0) Day Book No. 26; (2013-126-0) 22 additional bound volumes and three record storage cartons of Boardman, Lane, Ruggles, Schroeder, Whiting, and Wright family papers including bills and receipts in wrappers and family correspondence; and (2015-21-0) 33 Boardman letters purchased by the Litchfield Historical Society.

The Reuben Booth account book (1972-134-0) is an account book maintained by Reuben Booth for the years 1876 through 1906. Reuben Booth ran a dry goods store in New Milford, Connecticut. The account book lists out names and monetary amounts, but does not indicate specifics about transactions. The back of the ledger contains book keeping for bank accounts. The item is housed in 3B Box 8.

The John Wright Collection (1715-1853) [1982-22-0] consists of papers related to the Bostwick, Buck, Canfield, Ferriss, Hine, McEuen, Northrop, Taylor, and Treadwell families; lawyer Partridge Thacher; and others living in New Milford, Conn. It also includes papers related to New Preston Society. Included in the papers is correspondence; deeds; notes, orders, receipts and other business records; leases; subscription lists; account books, and other documents.