Stinger,
welcome to the forum.
In answer to your questions:
No , we do not have an IAC museum BUT..... The IAC has a few planes from history stored at the Don.
This planes are e.g. Fougas, Vampires, Avro Anson etc.
The hangar in which they are stored is called " the museum" by IAC personel.
This place can be visited if you ask permision at the aerodrome.
Kind regards,
Guinness