The story goes that they performed in NY City and appeared on the Ed
Sullivan Show (or perhaps Ed Sullivan's Toast of the Town).
How can I do some research on trapeze/highware acts? I know there used
to be catalogs of circus acts -- there was one on eBay from 1924
titled something like "Circus and Hippodrome Acts, Fireworks Displays
and Spectacles, Auto Races, Auto Polo and Aviation Bands and
Everything You Require."