The Pacific Railroad Surveys (1853–1855) were a series of explorations of the American West designed to find and document possible routes for a transcontinental...

Southern Pacific Railroad. Its assets were formally merged into Southern Pacific in 1959. Following the completion of the Pacific Railroad Surveys in 1855, several...

transcontinental railroad (known originally as the "Pacific Railroad" and later as the "Overland Route") was a 1,911-mile (3,075 km) continuous railroad line built...

Pacific Railroad Acts of 1862 were a series of acts of Congress that promoted the construction of a "transcontinental railroad" (the Pacific Railroad)...

transcontinental railroad. He found investors for what became the Central Pacific Railroad (CPRR). As chief engineer, he performed much of the route survey work to...

The Southern Pacific (reporting mark SP) (or Espee from the railroad initials) was an American Class I railroad network that existed from 1865 to 1996...

The Northern Pacific Railway (reporting mark NP) was a transcontinental railroad that operated across the northern tier of the western United States,...

The Kansas Pacific Railway (KP) was a historic railroad company that operated in the western United States in the late 19th century. It was a federally...

history of the Union Pacific Railroad stretches from 1862 to the present. For operations of the current railroad, see Union Pacific Railroad; for the holding...

Milwaukee, St. Paul and Pacific Railroad (CMStP&P), better known as the Milwaukee Road (reporting mark MILW), was a Class I railroad that operated in the...