This is another one that's a little out there - more of a comedy scene involving railroads. "It's a Great Feeling," early Doris Day picture with Jack Carson and Dennis Morgan. There's a bit at a train station with the man at the information booth looking up an obscure stop (Goerke's Corners) in Wisconsin. He keeps finding the double asterisks, circle, dot and square and referencing supplements and appendices and special schedules.
Toward the end of the movie, there's a process shot out the windows of the observation car - taken in Los Angeles along San Fernando Road along the SP. There's a building that looks like it has Pacoima on the sign; they pass Alibi Cafe.
Here's a what looks like the process shot, part of which was used in the movie:
https://archive.org/details/pet981r5
There appears to be a dash of color here and there in process shot in the movie, in signage. Maybe it was added. The part in the movie starts around the 6-minute mark.
EDIT: For fans of old movies, many actors and directors turn up in cameos in this movie. Look for a "Mildred Pierce" reference. I could swear Dennis Morgan was impersonating Ronald Colman in one scene, and that someone else was singing like Maurice Chevalier in another.
David