From the GPSKevin website:
History of the Trans America Trail: The Trans-Am Trail was first organized by Sam Correro some time in the early 1990's Sam conceived and organized the route from Tennessee to Oregon and built roll charts and maps to enable Dual Sport Motorcycle riders to navigate the route. You can still buy Roll Charts and original maps from him at his web site:
http://www.transamtrail.com Thanks to Sam for starting a great route. Since the beginning, the route has expanded to complete the Coast to Coast desire by starting out in the Atlantic Ocean in the Outer Banks of North Carolina and continuing to Oregon. The route now includes many improvements and options for likely issues that people encounter along the way, like alternate routes around mud holes, snow in the Rockies, frustrated farmers, high water river crossings, and improved gas stops. In 2014 new trail sections were added to allow riders to select a route between New York and Los Angeles. These routes turned out to be equally spectacular.
and this
About Sharing the TAT: I believe in an open source ride world, so I give away all the info to share the ride, in the hopes that others will do the same with other great rides. I have ridden the entire Trans America Trail, and studied it greatly and collected feedback from many sources and refined it. But it will be an adventure because things do change from year to year. gpsKevin