This is an image of the hills of Wyoming from the highest point on the Lincoln Highway in Wyoming, once known as US 30. The highway was upgraded in the mid-20th century to Interstate Highway status, and is now part of I-80.
The description states:
The summit of the Rockies, over which passes Trans-continental railroad and highway, and air lines.
–It’s not clear why airlines are mentioned in this description, as the landmark is relatively unimportant to planes tens of thousands of feet above. This image was a black and white photo which was colored manually for sale. It likely dates from the 1940s.