This 1932 booklet and one for Clatsop Beach are mentioned in the airplane-map brochures of yesterday and the day before. The cover painting shown below (which is the back cover) is based on a photo from that brochure of an eastbound SP&S train rounding Wind Mountain in the Columbia River Gorge.
One difference between the painting and the photo is that the train in the photo has just six cars, while the painting shows ten. The little Pacific locomotive pulling the train could probably handle ten cars, but whether it could do it at passenger train speeds is more dubious. Until it acquired its 4-8-4 Northern in 1938, SP&S usually ran double-headers when its passenger trains reached that length.