The style of the locomotive can only provide clues to the geographic location of the builder. For instance, English railroads were well engineered and built compared to early American railroads. The English, except for Bury and his followers, built outside frame locomotives that were quite rigid as opposed to the bar frames which were a lot more flexible and far better suited to the track conditions in this country. As a result, bar frames became the universal style for American builders, but in the early years both styles were built. So, an outside plate frame locomotive is likely to be English, but an inside bar frame locomotive could come from either country.
Jervis did invent the bogie and by 1835 it had been adopted by all leading American locomotive builders, according to John White's book, American Locomotives.

For member 203: who is the historian you reference in point #1 above?

Thanks.

Chris.

Clement E. Stretton

Since the name of the New York builder isn't mentioned, is it possible that it is Stephenson, the same as a
New York City horse car builder, and that the employee worked for a broker or importer?

The employee was Samuel Dougherty, later Superintendent Of Locomotives for the Camden and Amboy, who at the time worked for R. H. Dunham & Co., and who reported that he delivered the locomotive to Natchez.

me three, where did it go...

From Trains Magazine:

"The locomotive had valve gear under the boiler that was connected to cylinders located inside the smokebox..."

Not clear what is being said. The engine was built with inside drive and modified later?

The locomotive was constructed with inside cylinders and later modified to outside cylinders, 4"10" gauge. At the bottom of the boiler are the remnants of two bolts that held a bracket used to support the valve gear. The bracket was removed by the Illinois Central in about 1925 because a leak had developed around one of the bolts. This, along with the bolted-on second steam dome and the filled-in openings in the backhead where the throttle was originally located, all evidence an original boiler.