Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 142,957 pages of information and 228,875 images on early companies, their products and the people who designed and built them.
Allen has been building motorcycles since 1990.
The British Motorcycle Directory - Over 1,100 Marques from 1888 - by Roy Bacon and Ken Hallworth. Pub: The Crowood Press 2004 ISBN 1 86126 674 X