Beazley, Paralipomena, p. 389, no. 21bis (who credits Cahn as the attributer).
Guy in Leipen, et al., Glimpses of Excellence, A Selection of Greek Vases and Bronzes from the Elie Borowski Collection, no. 15.
Carpenter, Beazley Addenda, (564.21bis).
Royal Ontario Museum, Toronto, 18 December 1984 to 30 June 1985