Folks who attended T.J.Tennent's class can order the three books he referenced so often, at his cost. They were:
Tire and Rim Annual Yearbook,
Passenger and Light Truck Tire Conditions Manual
Who Makes it and Where (DOT Book))
T.J. can get all three for $295.00 plus $10.00 shipping for a total of $305.00. That total is with his discounts.