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.
Lansing Manufacturers Railroad Lansing Manufacturers Railroad was a beltline switching railroad organized in 1904 to connect Cornelius Vanderbilt's Michigan Central mainline on the north edge of Lansing, Michigan, to automotive factories on the west and south side of the city and to Sir Henry Tyler's Grand Trunk Railroad along the north bank of the Grand River. The company's 5.1 mi , C-shaped right of way lay entirely within the city limits. Important customers included GM's Reatta Craft Centre, Lansing Metal Center, and both plants of Lansing Car Assembly.