Indiana. The Crossroads of America. When the Auto Trails came to the state, there were quite a number of them. In 1922, there were 34 to be exact. While the State Highway Commission was busy putting state road numbers everywhere, people at the time still followed the colorful markers that appeared on utility poles throughout the state. In November 1922, an article was published in several newspapers across Indiana describing those Auto Trails. Those articles showed the signs that were posted along the way, and a brief description of the route. Anyone that has seen these lists in person know that the order of the highways is a bit weird. Yellowstone Trail is always listed first. Why? Because Rand McNally, when publishing the “official” Auto Trails maps in the late 1910’s and early 1920’s listed it first. It wasn’t the first such road…but Rand decided it would be.