The Killing of Polly Klaas
Bortnick, Barry, Polly Klaas: The Murder of America's Child, Pinnacle Books, Kensington Publishing Corp., New York, NY, 1995.
Spiering, Frank, Who Killed Polly? Monterey Press, Monterey, CA, 1995.
"Anguished dad says life 'in ruins' since Klaas' death,"
"Killer of Polly Klaas sentenced to death,"
"Richard Allen Davis," Canadian Coalition Against the Death Penalty," http://www.ccadp.org.richarddavis.htm.
2006 Case Update:This update was based largely on information shared with the author by Vernell Crittendon and Jim Carr. The author also utilized the San Francisco Chronicle article, "Polly Klaas murderer found unconscious; Death Row inmate survives alleged opiate overdose" by Peter Fimrite published on July 25, 2006.