Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 134,016 pages of information and 212,992 images on early companies, their products and the people who designed and built them.
of 256/262 Holloway Road, London, N7. Factories at Holloway, N7 and Chalk Farm, NW1. (1922)
of 258-262 Holloway Road, London, N7. Factory: Harmood Street, London, N.W.1. Telephones: Hampstead 6105; North 1636 and 4453. (1929)
Sidney C. Harper - Managing Director (1922 and 1929)