Images from my personal collection.
It's probably not fair for me to answer, so I will let someone else guess - but I will ID this as the Mark Smith Horse Show! That first pic must be from its Grand Opening on New Year's Day, 1950 - Guy Tester told me it was hardly ever more than a quarter full most of the time...
Chris you know Let see how many can answer this one.
The Calico Mine Train!
By the way, these are pretty cool pics. Up until now, I had only seen aerial pics of the arena.
Tokyo you are right.This was 5 years before Bud Hurlbut built the now famous Mine Ride.