I was head of TV & Movies for the fair and worked as Technical Advisor on the Elvis film. We hired your dad: "Guppo The Clown" to stand on the top ledge of the Food Circus building outside so that the MGM film crew could get shots of crowds of people looking up. "Guppo" wore these big shoes so we had to tie a rope to his waist to keep him from tripping on the ledge and falling off. I have some color film of this with him if you are interested.
Albert Fisher
Los Angeles, CA