Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 146,052 pages of information and 231,597 images on early companies, their products and the people who designed and built them.
John Baker and Co of Rotherham
1900 Mention of them as makers of railway wheels and axles, steel, Iron and brass founders. 
1920 Public company: John Baker and Co (Rotherham)