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?
Crédit Mobilier of America scandal The Crédit Mobilier scandal of 1867, which came to public attention in 1872, involved the Union Pacific Rail Road and the Crédit Mobilier of America construction company in the building of the eastern portion of the First Transcontinental Railroad. The scandal was in two parts. The construction company charged the railroad far higher rates than usual, and cash and $9 million in discounted stock were given as bribes to 15 powerful Washington politicians, including the Vice-President, the Secretary of the Treasury, four senators, and the Speaker and other members of the House.
Edward J. Sanford Edward Jackson Sanford (November 23, 1831 – October 27, 1902) was an American manufacturing tycoon and financier, active primarily in Knoxville, Tennessee, in the late 19th century. As president or vice president of two banks and more than a half-dozen companies, Sanford helped finance Knoxville's post-Civil War industrial boom, and was involved in nearly every major industry operating in the city during this period. Companies he led during his career included Sanford, Chamberlain and Albers, Mechanics' National Bank, Knoxville Woolen Mills, and the Coal Creek Coal Mining and Manufacturing Company.