Souvenir (event) envelope, 6¾ size (90 mm x 165 mm), original design by Geerlings of Salem, Oregon, USA, showing the Melbourne Cricket Ground (main stadium for the 1956 Olympics) with portrait of Martin Luther King Jr and caption 1956 Olympic City Melbourne hopes all the dreams of 1996 Olympic City Atlanta are fully realised!, hand painted in eleven water colours, $1 Athletics stamp (airmail rate to USA), postmarked 18 September 1990, Melbourne GPO, pictorial postmark, with insert, limited numbered edition of 96.