Yorkshire Engineering Supplies
Y. E. S. of Ingham Street, Hunslet Road, Leeds
1909 Company established and Incorporated as a Limited company.
1912 Exhibitor at the Non-Ferrous Metals Exhibition at the Royal Agricultural Halls.
1914 Founders of Copper and White Metal Alloys by the Patent "Eatonia" process of Casting. 
1917 Image on this page. 
Sources of Information
- The Times, 19 June 1912
- 1914 Whitakers Red Book
- The Motor, Marine and Aircraft Red Book - 1917
- The Times, Feb 03, 1982