293. The Archives of Richard Bentley & Son 1829 – 1898 Chadwyck-Healey, 1976, microfilm; (published index: Index to the Archives of Richard Bentley & Son comp. Alison Ingram, Cambridge: Chadwyck-Healey, 1977).
293. The Archives of Richard Bentley & Son 1829 – 1898 Chadwyck-Healey, 1976, microfilm; (published index: Index to the Archives of Richard Bentley & Son comp. Alison Ingram, Cambridge: Chadwyck-Healey, 1977).