William George "Bill" Bonin aka "The Freeway Killer"  executed by the state of California on February 23, 1996. 

Three page typed letter on two sheets of 8 1/2" x 11" paper and dated August 6, 1994. Hand signed at the close, Your Loving Friend and Brother in Christ, Bill.
Includes the original San Quentin State Prison stamped mailing envelope.

William Bonin Signed Letter With Envelope