From Wikipedia Media Archive:
https://en.wikipedia.org/wiki/The_General_(1926_film)
"In 1953, a new version of the film was created by Raymond Rohauer, a film distributor and collector. The movie was re-edited with an introduction and music. As of 2013 this version is under copyright, as Rohauer filed a copyright registration in 1953 and renewed the copyright in 1983."
You'll have to check if this is the version is copyrighted. It may be.