found: His The masakado lesson, 1986:CIP t.p. (William P. Kennedy) pub. info (pres. of an advertising and PR firm)
found: Diamond, Diana. The trophy wife, 2000:CIP t.p. (Diana Diamond) front matter (Diana Diamond is the pseudonym of a critically acclaimed mystery and thriller writer)
found: U.S. copyright file, July 9, 2001(William Kennedy (Diana Diamond, pseud.))
found: Amazon.com, July 9, 2001(The trophy wife: Diana Diamond is the pseudonym of a critically acclaimed mystery and thriller writer [same as Kennedy, William P.?--LC database, July 9, 2001])
found: Fantastic fiction, Nov. 30, 2009(William P Kennedy; aka Diana Diamond)
found: Code Conquistador, 1982:t.p. (William P. Kennedy) t.p. verso copyright statement (William Kennedy)