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 148,136 pages of information and 233,680 images on early companies, their products and the people who designed and built them.

Tonicity Laboratories

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November 1938.
November 1938.
March 1939.
April 1939.
May 1939.

Manufacturers of Halmagon.

Emerald Street, London.

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Sources of Information