Silent Guide Co
From Graces Guide
of Staple Inn Buildings, high Holborn, London
- 1920 Silent Guide Automatic Route Indicator
Sources of Information
- The Engineer of 16th April 1920 p408
Grace's Guide To British Industrial History
Registered UK Charity (No. 1154342)Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,713 pages of information and 247,105 images on early companies, their products and the people who designed and built them.
Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.