Illustrated Parts Breakdown Manual for Ball Turret

I was curious if anybody out there has access to a reprint copy of an illustrated parts breakdown manual for the Sperry/Briggs ball turret? I’ve seen similar manuals for other turrets such as the Martin 250 CE and have been told there exists one for the ball turret as well. These manuals are a wealth of information since they list all the parts down to the last nut and bolt and feature exploded diagrams.

I would be more than happy to cover any copying or shipping expenses. Any help with this, and my never-ending search for ball turret parts, would be greatly appreciated. Thanks!

John