Graduated from Okie State in ‘61. And, as I recall, 9000+ was routine in Gallagher Hall for major matches.
I guess that means you would have been in the first class to go all 4 years with the school known by its current name -- congrats!! I'm Class of 1978.
A crowd of 9000 in Gallagher Hall would have exceeded its seating capacity by over 2000 people. Not saying it didn't happen, just that it would have been...interesting. I've heard plenty of the "back in the day" stories of the full houses for wrestling matches and I was in the crowd for a few that were well-attended when I was in school.