
The film's restoration was sponsored by the Niles Essanay Silent Film Museum. http://nilesfilmmuseum.org/
You can read about Charlie filming in Niles at this post below. One surprise, you can see a portion of the town baseball field bleachers in the back of one scene.
https://silentlocations.wordpress.com/2016/11/07/how-chaplin-filmed-the-champion-on-location-in-niles/
Cheers, John