You'll find below some great OLD film of a circus parade. The clip says it is the Barnum & Bailey Circus in 1899. Discussion on the CHS Facebook page has indicated that "Movietone" wasn't out in 1899 so it may have acquired the film.
I would go along with the 1899 date as it appears to be FRITZ the big male on the Barnum & Bailey Circus shown clearly with the martingales in place at the front of the elephant line-up with one female in front of him.
Any thoughts on any of this?