Nathan Leopold handwritten envelope with 6 lines penned in his hand from 1966This envelope is postmarkes from August 8 1966 and is signed N.F Leopold with his address in Puerto Rico.He would pass away in 1971 less then 5 years after sending this envelope in Puerto Rico.Many movies like murder by numbers with Sandra Bullock and Ryan Goslin was based on the Leopold and Loeb case.

Scott Panetti handwritten envelope with 10 lines penned by him from 2004Panetti v. Quarterman, 551 U.S. 930 (2007), is a decision of the Supreme Court of the United States of America, ruling that criminal defendants sentenced to death may not be executed if they do not understand the reason for their imminent execution, and that once the state has set an execution date death-row inmates may litigate their competency to be executed in habeas corpus proceedings.