Sean Sellers who was executed by the State of Oklahoma on February 5, 1999 and was the last person put to death in the United States for crimes committed before the age of 17. 8 1/2" x 11" multi page handwritten letter to his father Rick.  Dated October 15, 1997, hand signed, your son, Sean. Includes the original prison stamped and issued envelope postmarked October 16, 1997, Tulsa, OK, hand signed, Sean Sellers.