1938 published "Organisationsbuch der NSDAP". 5 Auflage. 592 pages.
The most important period time book on the NSDAP and its sub-organizations such as DAF, SA (i.e. including Marine-SA), NSKK, SS, HJ, BDM, RAD, NSFK etc. It not only gives a brilliant overview on the structure but also on uniforms, headgear, flags, insignia, lanyard, daggers and awards.
