Richard Allen Davis awaiting execution for the 1993 murder of Polly Klaas in Petaluma, California.  It was Davis' case which led to California passing the Three Strikes Law.

8 1/2" x 11" handwritten note hand signed, Rick.
 
Includes the upper portion of the San Quentin State Prison stamped envelope completely handwritten by Davis with 4 lines of address and hand signed, Richard Davis.