Written on verso “Barnum’s kayaker rows between shows.” Information from Fred Dahlinger: This is submariner Paul Boyton, who did an act in a shallow tank for Barnum and Bailey about 1887. He later organized an amusement park at Coney Island, later (not originally) known as Sea Lion Park and ultimately bought by Thompson and Dundee who transformed it into the first Luna Park, the success of which inaugurated the great era of amusement parks in the US and elsewhere.