Book: Toppler, Joachim. 1988 A Spectacle of Spectacles. 178.
• Similar object: p. 73, fig. Oc21Book: Rosenthal, J. William. 1996 Spectacles and Other Vision Aids A History and Guide to Collecting.
• Similar object: p. 339, fig. 661.Book: Davidson, Derek C. 1989 Spectacles, Lorgnettes and Monocles. 32.
• Similar object: p. 15.