Horace Gray, Illinois Central Railroad Company v…
“ The state of Illinois, by a statute of February 10, 1851, chartered the Illinois Central Railroad Company, and ceded to it the rights and lands granted to the state by the act of congress, for the purpose of constructaing and maintaining within the state such a trunk line and branches, describing its southern terminus as 'a point at the city of Cairo,' and declaring 'said road and branches to be free for the use of the United States, and to be employed by the post-office department, as provided in said act of congress' ”
