ous newspaper accounts. One curious notice observed that, ex- 

 clusive of the boiler, the engine disassembled could fit in a box 2 

 feet long, i foot wide, and i foot deep." It was equipped, reports 

 another account, with a single cylinder and a condenser."^ The 

 track was an oblong circle about 30 feet in diameter. « The model 

 was exhibited in Rochester, Philadelphia, Baltimore, and, not un- 

 likely, in other cities. It was sold in Baltimore by Shield in late 

 October or early November 1830.10 



The introduction to the industrial East of an advanced mechanism 

 from the primitive West, a reversal of the then usual stereotype, 

 is a significant development. Interestingly, the Shield model was 

 shown in Philadelphia nearly a year before Matthias Baldwin built 

 his miniature locomotive for display at the Peale Museum. Bald- 

 win's model, however, came to the attention of the officials of a 

 local Philadelphia railroad looking for a domestic source of motive 

 power; this coincidence, and not solely his mechanical skill, launched 

 him on his successful career as a locomotive builder. 



Five engines built in Pittsburgh between 1834 and 1837 by Mc- 

 Clurg, Wade & Company just about complete the record of mid- 

 western locomotive construction prior to 1845." McClurg, Wade & 

 Company apparently did not become more fully engaged in loco- 

 motive manufacture because of the small market for such machines 

 in the locality, and because of the availability of other more profit- 

 able business. It is also likely that their engines did not compare 

 well with the more sophisticated products of the eastern shops. 



With this as background, we will trace the affairs during the years 

 1 845-1 868 of the five locomotive concerns located in Cincinnati: 

 Anthony Harkness & Son, the Cincinnati Locomotive Works, 

 Niles & Company, G. E. Sellers, and the Covington Locomotive 

 Works. 



' Poulsons American Daily Advertiser (Philadelphia), August 12, 1830. 



^ Daily Chronicle (Philadelphia), August 21, 1830. 



^ Ibid., and Baltimore Republican and Commercial Advertiser, October 30, 1830. 



'" In Memoriam, p. 248. 



1^ Their first engine, the Pittsburgh, was completed in September 1835 for the 

 Allegheny Portage Railroad. It was copied from the Boston, built by the Mill 

 Dam Foundry in 1834 {Railway & Locomotive Historical Society Bulletin no. 53, p. 

 67). 



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