Tewksbury saw a second major expansion of its facilities during the 1930s under the Works Progress Administration (WPA) program. WPA-constructed buildings added during that decade included: the Married Couples Building (ca. 1930), Special Building (ca. 1930) (a dormitory building), the Dining Room/Kitchen (1934), Stonecroft (1935) (an agricultural building in the Craftsman style), and the Nichols Building (1939). Along with new buildings, came murals painted by artists employed by the Federal Art Project. These murals decorate the central room of the Old Administration Building (now known as the Mural Room), and feature work by artists Maurice Compris, Samuel F. Hershey, and W. Lester Stevens.