The vista-dome North Coast Limited was at the height of its glory in 1957, with four domes, the Traveller’s Rest car, and a parabola-tailed observation car as illustrated on the cover of this timetable. We’ve already seen this cover on a 1960 timetable.
Click image to download a 27.5-MB PDF of this 36-page timetable.
This timetable is four pages longer than the 1960 edition. This probably reflects the discontinuance of local trains in Minnesota and North Dakota. I also notice that NP had an overnight train as well as a day train between Portland and Seattle in 1957, but the overnighter had been discontinued by 1960.

I am sure it is no coincidence that the layout for this timetable cover is remarkably similar to the layout of this ad that appeared in the December, 1956, issue of National Geographic. The timetable only uses two colors, so the photo of the stewardess in the dome is in black and white, and if you look carefully you will see they are in fact two slightly different images as professional photographers in those days would take one photo in color and a second in black-and-white. I presented this and other North Coast Limited ads several years ago, but I’m showing it again here to compare with the timetable.