Williams Gamon & Co. [1859-. UK. Stained Glass Firm]
Williams Gamon & Co. [also known as Williams & Gamon] was a stained glass firm a… subscribers only
Bibliography
1. Stained glass marks & monograms. Compiled by Joyce Little. Edited by Angela Goedicke and Margaret Washbourn London: National Association of Decorative and Fine Art Societies, 2002 [see under Gamon, G.P.]