Well, all right. I've looked all over the 'Net and that's the first time I've seen anything resembling harp tab for that song. Incidentally, I read that the intro on Blackfoot's version was done by Shorty Medlocke, grandfather of Rickey Medlocke (founder of Blackfoot). Shorty Medlocke wrote "Train, Train". The harp in the song was played by Cub Koda of Brownsville Station, according to the same info. Customjob's right: gotta learn that train sound. (One reason it's a lost art may be that there aren't as many steam locomotives running these days.) Play on!