This was a set of ten different postcards, but I only have five of the set. The cards are linen and say nothing about a streamlined Shasta Daylight, so I would guess they were issued either right before or right after World War II.
Click any image to download a PC of that postcard.
Monteith Rock is a prominence visible from both the railroad and from U.S. Highway 58 west of Willamette Pass.
Odell Lake is a large lake on the east side of the Cascade crest. The south end of the lake has a nice resort.
I’ve never heard the term “chain of lakes” used to refer to these lakes in the Cascade, nor is Rosary Lake, shown in the foreground, visible from the railroad. This photo’s perspective also fails to reveal that Rosary Lake is tiny, a mere 7.5 acres, compared with Odell Lake, which is 3,415 acres, in the middle ground or Crescent Lake, 3,822 acres, in the background.
Crater Lake is even larger at 13,212 acres. The park used to have an eastern entrance accessed from the Southern Pacific train station at Chiloquin. When passenger trains no longer stopped there, the entrance was closed and today the south and north entrances are the main ones.
Klamath Lake is even larger at 62,000 acres. Unlike Odell, Crescent, and Crater lakes, which are deep, Klamath Lake is shallow and really more of a marsh.
Here is the envelope the cards came in. The other five cards probably showed Mount Shasta, Black Butte, Mount Lassen, and other California scenes.