Synopsis by Hal Erickson
With bags packed, Mickey Mouse and his dog Pluto depart from the Burbank depot for a train trip to Pomona. Alas, surly railroad conductor Pegleg Pete won't let Goofy in the passenger car, so Mickey stuffs the dog in his suitcase. It doesn't take long for Pete to figure out what's going on, and after luring Pluto out in the open by imitating a cat, the chase is on. Our heroes spend the rest of the cartoon trying to elude the outraged Pete ("WHYYYY, I'LL TEAR YA TA PIECES!") and to avoid gettting tossed off the train. A fine example of the "bread and butter" Disney cartoons of the 1940s, Mr. Mouse Takes a Trip is blessed with a surefire comic situation and a bottomless reserve of clever gags.