In the photo below are the Mills manuals for Silents of the 1930s, that were available in reprint when I bought my first Extraordinary back in the late 1970s. I see a couple of other versions of Mills repro manuals around these days - is there anything that actually includes more or better information?
As far as I'm aware, there are no original manuals available for the QT Silent.
There seem to be two or three different versions of Vest Pocket manual reprints, with different additional information.
Restored Mills 5c Extraordinary "barn find", long gone - now restoring 1934 5c Extraordinary Gold Award with original World's Fair reel strips
Restoring early Mills 5c Firebird (large coin view window)
About to take on a Mills 5c Vest Pocket