| Description | photocopy of Door Knobs, Lighting, Wall lighting Brackets, reference A.M.1, A.M.2, A.M.3, 32 images sketched (Super imposed) photographs, see (LS 10/) H/44/19, dated early 20th cent, at rear of this item see photocopy of Harcourt‘s Door Key Locking Mechanism drawing (LS 10/H/44/55). |