While in Portland, Tom Grundy (played by Frank Ferguson) asks Emerson Cole (Arthur Kennedy) "Don't I know you?" In Man of the West (1958), Ferguson--playing the sheriff of Crosscut--asks Gary Cooper the same question.
James Stewart was so upset when Rock Hudson received more cheering and applause at the premiere that he vowed never to talk to the actor again, let along work with him - and he never did.
After dropping off a party to cross over Mt Hood, the paddlewheeler captain indicated that the was taking the boat back to the Mississippi river. This would entail going all the way around South America. A paddlewheel boat would not be capable of such a journey.