John Mark Byers step father of Christopher Byers who along with Stevie Branch and Michael Moore were murdered in the West Memphis 3 killings. Damien Echols, Jason Baldwin and Jessie Misskelley Jr.  were convicted of the killings. Released years later under an Alford plea. 
Byers died in a car accident on June 18, 2020.

Original prison stamped mailing envelope hand signed, J. Byers.

John Mark Byers Signed Envelope