Going through my new issue of American Rifleman they mention a book I thought everyone would be interested in: Ott- Helmuth von Lossnitzer, Technical director of the Mauser Company, 1933-1945:An Oral Recollection.Its available from Mowbray Publishing tel 800-999-4697.$50 plus post.
I haven't received my copy yet so I can't report on it, but its on a topic we are interested in.