Here's some from the USAC Sprint show in the summer of '73.
Back then the field was a mix of upright sprints, roadsters and rear engine cars.
I can't remember the drivers, so feel free to chime in if your memory is better than mine:
Thanks Lube, for another cool round of old photos!
I was a supermodified and sprinter fan from the 60's on, so I appreciate those, but I definitely have a huge soft spot for the old coupes and coaches.
Keep 'em coming!
Bill