Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,455 pages of information and 233,880 images on early companies, their products and the people who designed and built them.

Henry Whitham and Son

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of O. K. Steel Works, Countess Road, Sheffield.

Manufacturers of OK high-speed tool steel and engineers files.

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Sources of Information