Burlington updated its Mississippi River Scenic Line brochure after adding vista-domes to the Twin Zephyrs. The new brochure still includes the history of the region–for some reason, no longer credited to Lucia Lewis–and the city-by-city guide, with updated population data.
This particular brochure is dated 1954. I have one that is almost identical, except for the cover, dated 1949. I may post it here in the future but for the moment I’ll just include the cover below.