Collectors reference book: SS Metal cap insignia (1935-1945) by
SS Visor Cap Skull - Deschler - Epic Artifacts - Original German WWII
SS BeVo Totenkopf Skull
A WW2 German Waffen-SS officer's peaked cap with metal National
MedalBook - Allgemeine SS Metal Cap Death's Head Type I
Germany, Ss. An Early Allgemeine Ss Visor Cap Totenkopf Insignia
Early SS Totenkopf Medal Cap - Jawless
WW1 German Cap Badge Brunswick Braunschweig Totenkopf Traditions
At Auction: Unissued SS/VT Totenkopf Cap Button