I've seen some original manuals for sale or auction at very high prices. Beware with the M.S.4006--most of them seem to be manuals for the Swiss version(s) or even Swiss manuals.
A couple more - I did a search for "Armée de l'air" 1939 at Gallica and got 1973 results but less than 1 in 50 was actually about "Armée de l'air" or dated 1939 so I gave up at hit 400.
Someone whose French is better may be able to cut out the year 1790 to 2018 results and documents that do not reflect my search.
Most of these do not interest me but given how the site is not user friendly I am listing them so you can make your own decision