The Speed Freak Killers is the name given to serial killer duo Loren Herzog and Wesley Shermantine, together initially convicted of four murders — three jointly — and suspected in the deaths of as many as 72 people in and around San Joaquin County, California. They received the "speed freak" moniker due to their methamphetamine abuse. As of 2013 Shermantine is on death row. Herzog committed suicide in 2012; his conviction was overturned in 2004 and he was paroled in 2010. Bones recovered in 2012 from an abandoned well were positively linked to the killings.

One page typed letter (front and back). Letter is general content and is signed in full. Original matching typed envelope is included.