Minutes 1902 1970; shareholding records 1902 1971; ledgers 1902 1971; purchase books 1918 1940; machinery records and order books 1850 1947; patents book 1924 1960; machinery specification books 1858 1976; bills of material 1946 1955; machinery instructions 1946 1959; inventories; photographs 1928 c.1950; plans and drawings 1857 1968. Also includes company files and other records of subsidiary company James F Low (Engineers) Ltd, manufacturers of contractors' small plant 1902 1984.