Railroads liked to give their note pads to shippers as a form of cheap advertising, so most of them mentioned freight service. This is a rare one that focuses on passengers; perhaps it was given to travel agents rather than shippers. It makes the point that the Union Pacific went to more “Western Wonderlands and National Parks than any other railroad.”
Few other railroads could advertise, as the UP did in some of its travel booklets, that they could take you to six national parks (Yellowstone, Teton, Rocky Mountain, Zion, Bryce, and Grand Canyon) in one trip. UP also came pretty close to Rainier, and while it also often advertised Crater Lake, Yosemite, and Sequoia, these were accessed only by UP’s connections with Southern Pacific.