Three of the pieces on their list have been identified as being associated (by Vermeule, and more recently Kozloff) with Bubon in Turkey. (I also add the information supplied by Felch and Frammolino.)
a. 73.AB.100. Lucius Verus. Formerly London, Spinks. "Purchased in 1973 for $37,701 from Spink & Son, London."
b. 71.AB.458. Head of youth. "Purchased in 1971 for $90,000 from Nicolas Koutoulakis". Fire of Hephaistos no. 44: "Reported to be from Ibecik (ancient Bubon in Lycia) Turkey".
c. 72.AB.151. Eagle. "Purchased in 1972 for $200,00 from French & Company."
Felch and Frammolino note a fourth:
d. 72.AB.103. Bronze foot. "Acquired from Nicolas Koutoulakis." Fire of Hephaistos no. 19: "Reported to be from Ibecik (ancient Bubon in Lycia), Turkey".
Kozloff, A. P. 1987. "Bubon: a re-assessment of the provenance." Bulletin of the Cleveland Museum of Art 74: 130-43.
Mattusch, C. C. 1996. The fire of Hephaistos: large classical bronzes from North American collection. Cambridge (Mass.): Harvard University Art Museums.