CLOWN BAND (Circa 1910-20)

If I had to guess I'd date this as somewhere around the time Ringling combined with Barnum & Bailey in 1919.
Spader Johnson is at the far left, that may be Jack Le Clair seated next
to him with Pat Valdo seated to his right behind the bass drum.

A link to a Sarasota Herald article stating that Valdo did indeed play trumpet in the clown band (with a nice piece on Paul Wenzel causing mischief) can be found HERE.