I’ve only posted a few pocket calendars here in the past as they are generally more oriented to freight customers than to passengers. This one from the Great Northern mentions that the railroad is both “Great for Freight” and “Great for Travel.”
Click image to download a 190-KB PDF of this calendar.
The front of the calendar includes silhouettes of two freight trains (note that several of the cars on the two trains are identical) plus one of the Empire Builder, distinguished by its dome cars. The real Empire Builder included various head-end cars and required more than two locomotives to pull it over the mountains, but these have been eliminated in favor of showing off the domes.