Skip, actually the Jupiter is a 4-4-0 and I think it's one of the most beautiful engines ever built, that's why I used it for my avatar. The 4-4-0 is also called the "Amercian type" locomotive, because that was the common type that got America rolling during the early years, mid to late 1800's.
If you want an excellent DVD or video tape about the rebuilding of a steam locomotive, there is a great filiming of the rebuilding of the 261, which is housed in Mpls. Go to "Friends of the 261" and you may find a link to it. A Google search should turn up something. Unfortunately the 261 isn't running this summer and it's up for sale if you have $250,000.