Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 132,777 pages of information and 210,006 images on early companies, their products and the people who designed and built them.
of Hebburn, Co. Durham (1937).
J. H. Holmes and Co of Newcastle-upon-Tyne were makers of dynamos and motors.
1883 Company established by John Henry Holmes with his father and two elder brothers.
1900 Details of electrically driven printer's machinery.
1901 Holmes-Clatworthy coupled motors 
1931 A description of their works in The Engineer 1931/01/16
1933 Holmes-Reyrolle System Traffic Control.
1937 Electrical engineers.