The first division points race I ran was at Odessa, TX (don't remember them holding another one there) was in 1968. I got my towing hubs made just before that trip. I tell kids now about flat towing to Pomona in '68 & '69 and they think I'm pulling their leg. A long tow bar and lots of positive caster in the race car front end and you couldn't tell it was back there. You could back one up like a trailer.
One friend of mine, Bennie (the Wizard) Osborn had the first enclosed trailer around here. He built it himself. That guy could build anything. Built his own Top Fuel cars, engines, trailers, etc. Not many Top Fuel World Champs build everything themselves anymore.

Bennie won the finals when they held them here in Tulsa, that was 1966 or 1967? They still smoked the tires the full 1/4 mile then.