The year was 1954 and the date was December 21st. The act, aerialists Benny & Betty Fox. High above Wilshire Boulevard, atop the Gaylord, tempting the fate of gravity and performing their feats of daring. (in both photos, in the upper left hand corner, you will notice the backside of the "G' to our 'Gaylord' rooftop neon.)
Apparently, Benny & Betty Fox would be hired to travel the nation and perform their act on top of high rises, as a promotional tool for the buildings.