Of course, I always start with Yann's website if I am looking for information about Cadillac history. I found this photo there. However, I cannot find the info on the actual location where it was exhibited.
Somewhere I read that "The show's 63 exhibits and 26 production cars occupied 26,000 square feet of ballroom space plus adjoining rooms." In my opinion, the Maharani could not be in the Grand Ballroom.
It would be nice to see a photo where the Maharani Cadillac is surrounded with people in its actual place.
Unfortunately, I do not have the Bruce Berghoff’s book. Maybe there’s a photo like that there. I do not know.
By the way, I found the names of the other three 1956 exhibition Cadillacs: Castilian, Gala, Palomino. They are all mentioned and shown on Yann's website just as the Maharani.