- 1917?, Robert Allerton (1873-1964) commissioned the Chicago stonecutter Charles Laing to produce two copies of the Three Graces by Germain Pilon (Musée du Louvre, Paris); the other copy adorns the grave of Robert’s aunt at a Lake Geneva, Wisconsin cemetery
- See blog I Love Allerton Park, http://www.iloveallertonpark.com/2012/04/16/the-contributions-of-charles-laing-to-robert-allerton-park/ (accessed September 25, 2017)
- 1995 Scheinman
Muriel Scheinman, A Guide to Art at the University of Illinois; Urbana-Champaign, Robert Allerton Park, and Chicago, Urbana and Chicago: University of Illinois Press, 1995, pp. 114-115
Monument of the Heart of Henry II, original in marble, commissioned by Catherine de Médicis in 1561, Musée du Louvre, Paris (see: http://www.louvre.fr/en/oeuvre-notices/monument-heart-henry-ii, entry by Valérie Montalbetti).
Copy executed by Chicago stonecutter Charles LAING
Wikipedia, https://en.wikipedia.org/wiki/Robert_Allerton_Park#Peony_Garden (accessed September 25, 2017):
At the east end of the Peony Garden stands a limestone copy of the Three Graces sculpture by Germain Pilon (1535-1590) in the Louvre, Paris.