The Night Before Christmas on the PRR. The late 1930's ad depicts Santa Claus visiting a little girl asleep on the PRR "Fleet of Modernism" passenger train. The train conductor assists Santa as they stand outside the young passenger's roomette. The advertisment was one of many by the PRR which enticed travelers to ride the Pennsy home for the holiday on the "Fleet of Modernism".
Wishing you a wonderful holiday season.