Including in and copy-out constituency correspondence answered by Margaret Thatcher and her constituency office staff, 1986; constituents' cases and surgery files, 1987-91; details of Mrs Thatcher's constituency engagements, 1971-87 (incomplete); annual yearbooks of the (then) Finchley and Friern Barnet Conservative Association, 1948/9-55/6, 1983, 1985/6-89/90; and other miscellaneous material, ca. 1983-92