I remember this been shown a few times on Channel4 here in the UK during the summer holidays when I was a kid and I loved it.
I have been looking for a copy recently and discovered that it is included on the 2 disc DVD of Buster Keatons "The General".
If you like this movie (three parts) I would recommend buying the DVD as its chock full of stuff and could prove a good introduction to the great mans work. (less info)