A great Grandfather of mine, John Vance painted this pic but I don't know where it ran. He was from Maryland but was in Illinois by 1874. In case the type is too small, it says Rocket on the cab & is numbered 15. Any help appreciated.
If you can find the following, might give you some info:
Railroad History, Railway and Locomotive Historical Society.
* Bulletin .* 167 (Autumn 1992) "Rogers Locomotives: A Brief History and Construction List" by Peter Moshein & Robert R. Rothfus
Post photo on a photo sharing site so we can blow it up if you can. Is there lettering on the cylinder box?