Some of the instruments you mentioned I do know where they are.
The "Gypsy Queen" was owned by Jim Welty, but sold a few years back.
"Sadie May" is in the Neilson collection along with the "Emperor".

Sadly though, "Big Bertha" is now at Disney World in the restaurant
in the Grand Floridian Hotel, where it is sitting high up in the wall.
Since it can barely be reached (let alone tuned), the organ remains
in bad condition -- it plays, but not well from what I've heard.

Mike Mills