History - 1964

Riddle, J. M. (1964). Pomum ambrae: Amber and ambergris in plague remedies. , 48, 111–122.

Riddle, J. M. (1964). Amber: An historical-etymological problem. In M. F. Gyles & E. W. Davis (Eds.), Laudatores temporis acti: Studies in memory of Wallace Everett Caldwell: Vol. (pp. 110–120). Chapel Hill, NC: University of North Carolina Press.