See M.G. Karmason with J.B. Stacke, Majolica A Complete History and illustrated survey, 1989, p.89 for a record of the George Jones & Sons pattern book, no. 3279. Also see R. Cluett, George Jones Ceramics, 1861-1951, Atglen, PA 1998, p. 50, for an engraving illustrating the largest of the three forms at the International Exhibition, Vienna, 1873 and N. Dawes, Majolica, New York, 1990, p. 113, fig. 197 for the design drawing for the model.