c. 1950s, so this was before this section of I-70 was built, and this was still Highway 6 if I am correct on the spot.
Thanks!


Bonus round... I had to piece together two screenshots for you on this one to make a composite. Any idea where this is? Aside from the giant locomotive, a good clue here might be the giant stone wall that is seen in the distant background on the left. This is almost certainly somewhere between Berthoud Pass and Denver.

Thanks for any help!