[Heathkit] Anyone have an extra battery box for the MR-21?

[Rev. Don Sanders]

I need a schematic and manual for the Heath
GW-52, which is I believe the same basic as 
the GW-12. I checked BAMA and Tech.net 
and could not find a copy. If anyone knows 
of a repository I would appreciate knowing 
about it. I will have to order one if not.   
Thanks.
Healthfully yours,
                          DON W4BWS