when did the prr first begin its passenger service between pittsburgh and philadelphia
by 1854 1854
title: Pennsylvania Railroad text: Pennsylvania Railroad The Pennsylvania Railroad (or Pennsylvania Railroad Company and also known as the "Pennsy") was an American Class I railroad that was established in 1846 and was headquartered in Philadelphia, Pennsylvania. It was called the Pennsylvania Railroad because it was established in the Commonwealth of Pennsylvania. The PRR was the largest railroad by traffic and revenue in the U.S. for the first half of the 20th century. Over the years, it acquired, merged with or owned part of at least 800 other rail lines and companies. At the end of 1925, it operated 10,515 miles of rail line; in title: Pennsylvania Railroad text: stops along the route. This service became known as the "Congressional Limited Express." The service expanded, and by the 1920s, the PRR was operating hourly passenger train service between New York, Philadelphia and Washington. In 1952, 18-car stainless steel streamliners were introduced on the "Morning Congressional" and "Afternoon Congressional" between New York and Washington, as well as the "Senator" from Boston to Washington. On July 1, 1869, the Pennsylvania Railroad leased the Pittsburgh, Fort Wayne and Chicago Railway in which it had previously been an investor. The lease gave the PRR complete control of that line's direct route through northern title: Pennsylvania Railroad text: of operation, it paid a dividend, and continued the dividend without interruption until 1946. The western end of the line was simultaneously built from Pittsburgh east along the banks of the Allegheny and Conemaugh rivers to Johnstown. PRR was granted trackage rights over the Philadelphia and Columbia and gained control of the three short lines connecting Lancaster and Harrisburg, instituting an all-rail link between Philadelphia and Pittsburgh by 1854. In 1857, the PRR purchased the Main Line of Public Works from the state of Pennsylvania, and abandoned most of its canals and inclined planes. The line was double track from title: Pennsylvania Railroad text: directions were the first trains in regular electric operation between New York and Washington, drawn by the first of the GG1-type locomotives. All regular passenger trains between these cities were electrified by March 15. In 1934 the PRR received a $77 million loan from the New Deal's Public Works Administration To complete the electrification project initiated in 1928, work was started January 27, 1937, on the main line from Paoli to Harrisburg; the low-grade freight line from Morrisville through Columbia to Enola Yard in Pennsylvania; the Port Road Branch from Perryville, Maryland, to Columbia; the Jamesburg Branch and Amboy Secondary title: Pennsylvania Railroad text: Limited" was replaced by the "Pennsylvania Special" which in turn was replaced in 1912 by the "Broadway Limited" which became the most famous train operated by the Pennsylvania Railroad. This train ran from New York City to Chicago, via Philadelphia, with an additional section between Harrisburg and Washington (later operated as a separate Washington–Chicago train, the "Liberty Limited"). In 1890, the PRR gained control of the Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, itself the merged product of numerous smaller lines in Ohio, Indiana, and Illinois. Commonly called the Panhandle Route, this line ran west from Pittsburgh to Bradford, Ohio,