When Aviation was part of Wyoming's economy?

The Casper Star Tribune has started a series, which will run this week (and has been running all week, at the time of this post) regarding diversifying Wyoming's economy.

This very interesting item appeared into today's article:

Before World War II, it was aviation. Planes heading from one coast to another needed a stopover, and Cheyenne was on the safest route across the Continental Divide. Boeing and American Airlines had offices there, and the first of the well-mannered, manicured and uniformed airline stewardesses were trained in Wyoming’s state capital.

Then the war came, bringing with it new technologies and better planes. The stopover in Cheyenne was left behind like an old railroad hub miles from a new interstate highway.

I had no idea.