The accidental birthday of the Baldwin LOCOMOTIVE works. According to author Kelly, Baldwin decided to enter the full-sized locomotive business based upon the following event, it led to the construction of Baldwin c/n 1 "old ironsides", which first ran in November 1832

"Franklin Peale, Esq. of The Philadelphia Museum, was sufficiently provoked in mind to approach Baldwin (1830) and to ask him to attempt the construction of a model locomotive which would be large enough to haul two small cars on a circular track and carry four passengers at the museum.

After studying the locomotives then in use, as well as the published descriptions of those that had contested at Rainhill, Baldwin agreed; and on April 25, 1831, his first steam locomotive was run upon the specified track and successfully fulfilled all the requirements of Mr. Peale’s order. In design the locomotive was similar to the “Noveltyâ€

Note that a full-size replica of Old Ironsides can be found at the Shelburne Museum in Shelburne, Vermont. If I remember right, it was built for the 1893 Worlds Fair. It is a non-operating wooden model. Why Baldwin didn't construct a full working replica, as other railroads did at the time, is not known. The Museum also has Central Vermont 4-6-0 220 and a former CV office car built by the Wagner Palace Car Co., plus a steam inspection car from the Woodstock RR.

http://www.shelburnemuseum.org/