| Here is a photo from page 732 in the "Centennial History Of The Pennsylvania Railroad Company: 1846-1946" that was composed by George H. Burgess & Miles C. Kennedy and published in 1949. Photo Caption: "Class D2a American type locomotive, built at Altoona, 1881, used in express passenger service. These locomotives, as shown on the one in this picture, had extended smokeboxes." Shown here is PRR engine #138, a D-2A (4-4-0) "American" built in the Altoona Machine Shops during May of 1881 and retired in July of 1896 after just 15 years of revenue service. |