In the first decade of the twentieth century classes E2 and E3 handled all of the fast passenger trains of the Pennsylvania Railroad. As train weights increased due to the switch to steel passenger cars and more cars per train, the “light” Atlantics were usually doubleheaded.

The Pennsylvania Railroad's class E3sd steam locomotives were of the 4-4-2 "Atlantic" passenger type, frequently called light Atlantics after the introduction of the heavier E6 Atlantics. All were similar in size and boiler capacity but differed in firebox type, valves and valve gear and...

During four years of testing at the PRR Altoona Test Plant, the superheated E6 demonstrated a 30% increase in power, with a corresponding 23% to 46% drop in water and coal consumption, depending on train weight and track gradient."

Do you have any PRR diagrams that are not on this site? If so please e-mail me so we can arrange to scan and add them to the site! Go to the PRR freight car index!

This page includes instructions for obtaining Copies OF PRR (Pennsylvania Railroad Company) Mechanical Engineering Drawings for a Particular Locomotive or Piece of Rolling Stock. Determining Which Drawing Numbers You Want. The Pennsylvania State Archives holds a fairly complete collection of PRR Mechanical Engineering Drawings, (ca. 1875-1960.

The E3 was an Atlantic that was built by the PRR parallel to its E2 that was largely similar, but had larger cylinders. Between 1901 and 1910, a total of eight E3, 114 E3a and 56 E3d were built in the Juniata shops at Altoona.

Below is a small collection of E2a, E7s and E3sd Steamers. The Class N1s 2-10-2 Locomotive was developed in 1918 by the Fort Wayne Shops of the Lines West region. It was built mainly for one purpose. The hauling of coal and iron ore to and from the lake ports. Their travels found them mainly in this area.

E3sa, E3sd, E7s & E7sa Locomotive Assignment', compiled from the October 1931 M.P. 229. Go to the Prototype subgroup and click the box on the left hand side marked "Files". This will take you to the archived Folders and Files formerly on the PRR-FAX …

The PRR issued form MP229 which listed the PRR-leased locomotives that were on the LIRR property by month and year. Some locomotives came over for a brief period of service and were returned. Some locomotives went back and forth numerous times.

The locomotive is a PRR class E3sd Atlantic (4-4-2). Burned down in 1943 Eastbound west of Great River Station - Dec 1947 #5072 is Pennsylvania Railroad Pacific class K4s. It's pulling a PRR tender and baggage car. Rounding the curve westbound at Irish Lane #3740 is also a PRR K4s Pacific. Passing under the Parkway Bridge Great River Station 1966