Includes indexes to minute books, 1913-1926; card index to minute books, 1936-1977; minute books, 1904-1977; Instruction book, 1913-1935; agenda books, 1933-1977; annual general meeting minute books, 1938-1974; director's attendance books, 1932-1977; shareholders' attendance books, 1919-1941; board memorandum books, 1919-1977.