Stanley Matthews, Chicago and Northwestern Railway Company v…
“ In our opinion, that view cannot be maintained. The contracts of 1875 were for four years, and were expressly authorized by law. They were, therefore, valid, and binding on the United States as well as upon the railroad company. They contained, within themselves, a mode for lessening, or, if deemed best, for discontinuing entirely, the described service; and provided for a proportionate reduction of the stipulated compensation. In no other mode could the contract be changed, except by the mutual assent of the parties. ”
