Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 137,265 pages of information and 220,098 images on early companies, their products and the people who designed and built them.
of Mahpro House, Mansell St., Tower Hill, London E1
1917 Advert for pipes and transmission appliances (of 104 High Holborn) 
1919 Advert for transmission appliances and tools