Most of my favorite Reference books are authored by John Angolia, whose work is typically translated from period sources. His books are also organized and well laid out, making them effective when it comes to research.

1.Uniforms & Traditions of the German Army 1933-45-three volume set (Angolia & Schlicht)

2.The Kriegsmarine-Uniforms & Traditions-three volume set (Angolia & Schlicht)

3.Uniforms & Traditions of the Luftwaffe-three volume set (Angolia & Schlicht)

4.Uniforms of the S.S.-collected edition (Mollo)

5.Cloth Insignia of the S.S. (Angolia)

6.Cloth Insignia of the NSDAP and SA. (Angolia)

7.Uniforms,Organisation & History of the NSKK & NSFK (Angolia & Littlejohn)

8.Labor Organisations of the Reich (Angolia & Littlejohn)

9.In The Service of the Reich-Government-Diplomatic & Red Cross (Angolia)

10.Uniforms & Insignia of the German Foreign Office & Government Ministries (Halcomb)

11.The H.J.-two volume set (Angolia)

12.Headgear Of Hitler's Germany-three volume set (Saris, Halcomb-Smith & Spronk)

13.History of the German Steel Helmet 1916-1945-3rd edition (Baer)

14.Badges & Insignia of the Third Reich 1933-1945 (Davis)

15.Forman's Guide to Third Reich German Awards and Their Values (Forman)

16.Camouflage Uniforms of the German Wehrmacht (Palinckx)

17.Mutzen von Staat & Partei 1933-1945-German Language (Nimmergut)

18.Deutsche Freikorps 1918-1921 (Hartung)

Of course this could never be a complete list, as I own well over 100 books. Perhaps from time to time I will add recommended titles as I become aware of them. As for finding and purchasing titles, I buy almost all of my books from Mr. Jack Hatter at Volume Control Books www.ww2bks.com

                          Knowledge Is Power