Kenneth Bianchi 1/2 the serial killers dubbed the Hillside Stranglers. Convicted of murders committed with his cousin in Southern California. Bianchi was also convicted of murder in Washington state.
Mail rejection form with a contraband cash slip. Includes the envelope which appears to be written in another's hand.

This was sent to the late, great Shane Ballard who founded People's Temple Records.

Kenneth Bianchi Rejection Contraband and Envelope