Douglas Clark was an American serial killer who along with his lover Carol Marie Bundy was convicted in a string of 1980 murders dubbed the Sunset Strip Murders/Slayings. Clark maintained his innocence throughout his incarceration suggesting that the killings were committed by Carol Bundy and Jack Murray who Carol was convicted of decapitating and killing. In the fall of 2015. On October 11, 2023 Clark passed away of natural causes.
 
Unused mailing envelope on which Clark has typed his name and return address and handwritten the complete name and address of the recipient.