New York Times, June 7, 1968 http://select.nytimes.com/mem/archive/pdf?res=F00E14FE3E5E1A7B93C5A9178DD85F4C8685F9 References Bird, Kai (2005). American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer . New York : Alfred A. Knopf . ISBN   0-375-41202-6 .   . Cassidy, David (2004). J. Robert Oppenheimer and the American Century . Pi Press. ISBN   0-13-147996-2 .