Hello, need more information about the history of SS and runes.

Need more information about the history of the SS and runes, it is known that there is information in the archives of the Bundeswehr, but how to get it from there is unknown, maybe that is that is in the public domain?

Also some of the best books on this subject have been studied, but they do not cause much confidence.

Where can I get more information?

P.S

List books

Die SS Geschichte, Aufgabe und Organisation der Schutzstaffeln der NSDAP.
Heinz Höhne.Der Orden unter dem Totenkopf
Robin Lumsden. Himmler’s Black Order: A History of the SS, 1923-45