What railroad for which Oakes Ames is credit as being the single most important influence in building was caught up in the  Crédit Mobilier scandal?
Oakes Ames Oakes Ames (January 10, 1804 – May 8, 1873) was an American manufacturer, capitalist, and member of the United States House of Representatives from Massachusetts. As a congressman, he is credited by many historians as being the single most important influence in the building of the Union Pacific portion of the transcontinental railroad. He is also noted for the subsequent scandal that alleged the improper sale of stock of the railroad's construction company.
Overland Route (Union Pacific Railroad) The Overland Route was a train route operated jointly by the Union Pacific Railroad and the Central Pacific Railroad / Southern Pacific Railroad, between Council Bluffs, Iowa / Omaha, Nebraska, and San Francisco, California over the grade of the First Transcontinental Railroad (aka the ""Pacific Railroad"") which had been opened on May 10, 1869. Passenger trains that operated over the line included the "Overland Flyer", later renamed the "Overland Limited", which also included a connection to Chicago. Although these passenger rail trains are no longer in operation, the Overland Route remains a common name for the line from California to Chicago, now owned entirely by the Union Pacific.