For information on the subject of rubber and the life of Charles Goodyear, see: H. Wickham, "On the Plantation, Cultivation and Curing of Para Indian Rubber", London (1908); Francis Ernest Lloyd, "Guayule, a Rubber Plant of the Chihuahuan Desert", Washington (1911), Carnegie Institute publication no. 139; Charles Goodyear, "Gum Elastic and Its Varieties" (1853); James Parton, "Famous Americans of Recent Times" (1867); and "The Rubber Industry, Being the Official Report of the Proceedings of the International Rubber Congress" (London, 1911), edited by Joseph Torey and A. Staines Manders.