Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 138,143 pages of information and 223,038 images on early companies, their products and the people who designed and built them.
Armstrong produced motorcycles from 1913 to 1915.
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