John Wayne Gacy aka the "Killer Clown" and "Pogo the Clown" was a Des Plaines, Illinois serial killer convicted of 33 murders executed by the state of Illinois via lethal injection on May 10, 1994. 

P.D.M. Contractors unused company check #3495.

The check includes Gacy's phone number and address 8213 W. Summerdale Ave, Norwood Park Township, Illinois.

John Wayne Gacy PDM Contractors Check 3495 With Stub