Edward Traver and Robert Shank were two lads from Schenectady, New York who ran off and joined the Vaudeville circuit as "The King Brothers - Herculean Comedy Athletes!"
The duo performed hand-balancing feats and were featured in Ripley's Believe It or Not. They were at their peak in the teens and 20's and once even shared the stage with Will Rogers in Atlanta. Unfortunately we're not sure which of the King brothers is featured in the rare postcard above but all that hand-balancing work has certainly built an impressive pair of arms for this fellow.