As referenced last time around, Raoul Barré went from making his own original cartoons to creating the first Mutt and Jeff animated cartoons, based on the comic strip created by Bud Fisher, beginning in 1918. Barré worked with Charles Bowers, who'd actually acquired the rights. Neither man's names were put on the cartoons, leading viewers to believe that Fisher made them himself, an illusion that Fisher was apparently all too willing to keep up, taking credit for the cartoons although he rarely even visited the studio they were made in! Bowers was fired by Fisher in 1919 from the studio, although Bowers did get the okay to produce occasional Mutt & Jeff cartoons as an independent contractor (which didn't last long). After Bowers left, Dick Friel and Burt Gillet took turns running the studio. Unfortunately, I wasn't able to find any of the original cartoons made in this series, but I did find two others to share!
First up, "Soda Jerks"!
Next, "Slick Sleuths," made in 1928.