With Ward Lloyd, London (the second).
With Delomosne and Son, Ltd., London (the third).
PCA Bulletin, 1984, p. 35, fig. 6 (the second).
P. Jokelson and D. Tarshis, Cameo Incrustation: The Great Sulphide Show, The Corning Museum of Glass, New York, 1988, p. 83, no. 282 (the third).