NSFK Nazi Flyers Corps book "Luftfahrt Kunde" published in 1944. With plenty of photos and catalogation of different German manufacturers' aircrafts and their features. Some less important damage to some pages.The National Socialist Flyers Corps (German: Nationalsozialistisches Fliegerkorps; NSFK) was a paramilitary organization of the Nazi Party as a successor to the German Air Sports Association that existed previously.