This series contains additions to the collection since 2016. It includes newspaper and magazine clippings; files about Thomas C. Babbitt's work as an architect on the Methodist Church and other buildings; property plans and files regarding Bantam River easements to the Nature Conservancy of Connecticut; Marcel Breuer's 1954 plans for the Gagarin House; Robert Fisher's WII Pilot book; and a binder containing the history of the Sanctum and list of members.

Oversized materials are stored as follows: Shelf 18B Box 9A- blueprints for Litchfield Canoe Club; The Lindens; and Samuel Fisher's Cottage 18B Section 2 Shelf 1- Bantam River easement surveys and maps 18B Section 2 Shelf 3- Marcel Breuer architectural drawings for the Gagarin House