Figure 2. — Original safety valve of Stevens' locomotive, 

 now in National Museum. 



A small, nonoperable model of the locomotive, about 

 2 feet long (figure 3), was made in the National Museum 

 in 1898 (USNM 180241) and is exhibited there. A full sized 

 operable replica, constructed in 1928 at the Altoona shops of 

 the Pennsylvania Railroad Co., was demonstrated (figure 

 4) at the Stevens Institute of Technology on November 

 23, 1928, upon the occasion of the inauguration of Harvey 

 N. Davis as president of the Institute. It was given by the 

 Pennsylvania Railroad to the Museum of Science and In- 

 dustry at Chicago in 1932, where it is now exhibited. 



Another replica of the Stevens locomotive, made by the 

 Pennsylvania in 1939, appeared in the railroad pageant at 

 the New York World's Fair in 1939 and 1940, and for a time 

 in 1941 was exhibited at the Pennsylvania Station in New 

 York City. In June 1941 it was placed on exhibition in the 

 museum of Stevens Institute, where it remained until March 

 1943. At that time it was returned to the Pennsylvania Rail- 

 road Co., and has since been stored in their enginehouse at 

 Trenton, N.J. 



Figure 3. — Model of 

 Stevens' locomotive, in 

 Notional Museum. The 

 boiler is shov^n outside 

 the sheet-metal shell 

 v^hich normally sur- 

 rounds it. 



