Look at this short film, one of dozens of films the freshly founded Disney Bros. company produced to be played before the main show in various theatres across the United States in the 1920s. Mickey Mouse isn’t yet on the radar, but he’s getting closer and closer, as you can surely see.
Interestingly, the combination of live action and combination was something that was very common at the beginning of the animation era, but was then slowly phased out. Except for a few examples (Pete’s Dragon, Looney Tunes), purely animated stories eventually became the norm.