John Hessin Clarke,
New York Central Company v. Mohney…
“ The contract which the defendant had with its passenger was in writing and was for an intrastate journey, and it cannot be modified by the purpose of Mohney to continue his journey into another state, under a contract of carriage with another carrier, for which he would have been obliged to pay the published rate, or by an intended second contract with the defendant in terms which are not disclosed. The mental purpose of one of the parties to a written contract cannot change its terms. ”
