Envelope from the serial killer Phillip Carl Jablonski

Phillip Carl Jablonski (1946–2019) was an American serial killer who committed a series of murders in California and Nevada during the 1970s and 1990s. He was convicted of five murders, including the killings of several women, and was sentenced to death in California.
Jablonski spent decades on death row before dying in prison in 2019.
This envelope, associated with Phillip Carl Jablonski, is offered as a historical true-crime collectible.