Need sewing patterns for WWII M1942 Paratrooper Jacket

[live4film]

I am making a costume of a WWII soldier, and I need the flat sewing garment patterns for an M1942 Paratrooper Jacket. I don't want to buy one, I'd rather make it myself. I would like to prototype the garments with my measurements in Marvelous Designer software to make sure it fits, so I need the flat garment designs. I can't find them anywhere. My only other idea is to purchase one only for reference, cut the seams and photograph the patterns.

These things are hard to find, but if anyone has any resources for such an endeavor, I would really appreciate it.