HALL 45. 
No. 50. — Original locomotive ‘‘Dragon/* America, 1848; the 
first with rocking grate, and the oldest Baldwin engine now existing. 
No. 51. — Original locomotive “Pioneer,” America, 1848; the 
first in Chicago. 
No. 52. — Original locomotive “Mason,” America, i860; 
one of the earliest of the distinctive American model passenger 
engines. 
Upon the Walls, the Westinghouse series of large original 
drawings, showing the evolution and development of the railway 
brake of the world. Another series illustrate the railroad occupa- 
tion of the United States by decades. Another series show the de- 
velopment of the Pullman sleeping car, and the Wagner sleeping 
car. Another series of original drawings show the development of 
the American passenger and freight cars of the Harlan & Hollings- 
worth Co. 
Series of original wash-drawings illustrating the evolution and 
development of permanent way. Series of drawings and photo- 
graphs showing exterior and interior views of the royal trains of 
the world. Series showing development of motive power on the 
Illinois Central Railroad from 1832 to 1893. Series indicating the 
development of locomotives and cars on the New York Elevated 
Lines. 
