0096. "Notes on some Isma'ili Coins from Yemen," Amer. Num. Soc. Mus. Notes XVIII (1972): 149-162.
0097. "The Chapter on the Fatimid Da'is in Yemen in the `Tarikh' of Umara al-Hakami (d. 569/1174): an Interpolation." In Sources for the History of Arabia, pt. 2. Riyadh: Riyadh University Press, 1979. Pp. 51-61.
0098. "The Function of Fatimid and Ayyubid Glass Weights," JESHO XXIV (1981): 63-92.