Murderabilia – Notorious Serial Killer - John Wayne Gacy (1942-1994) ‘They Call Him Mr Gacy’ Book selected correspondence of John Wayne Gacy, 1989, first edition, published and distributed by McClelland Associates, together with a Signed J.W. Gacy Envelope, with various newspaper cuttings (2) Note: John Wayne Gacy was an American serial killer who sexually assaulted, tortured and murdered at least 33 teenaged boys and young men between 1972 and 1978.