What I received from a friend who I marched with.
"You have me stumped. I think the prelims were held at Mcormick Place.
I remember going inside to a very large room. XXXXXXX seeing St. MARY'S as we marched by them XXXXXXX said to Dickie Pellitier, the DM, What are you doing here this is the Major Leagues. Also in the room was Casper, Cavies, SAC and Garfield. That is where they held inspection.
The night before was beautiful for the Parade, and we woke to rain. It let up a bit as we went into McCormick Place.
It was definitely McCormick Place."