Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 133,390 pages of information and 211,458 images on early companies, their products and the people who designed and built them.
of Penshurst, Kent. Telephone: Penshurst 33. Cables: "Duke, Penshurst". (1929)
of Penshurst, Kent. Telephone: Penshurst 370/1. Cables: "Wisdencric, 'Phone, Penshurst." (1947)