The Adler-Jahrbuch (Eagle Yearbook) was published by the the same company responsible for the well-known aviation magazine Der Adler during the Third Reich.  Each Adler-Jahrbuch starts with a calendar of Gedenktage (important historical dates) and holidays, and has illustrated articles about the Luftwaffe and aviation usually written by Luftwaffe officers. The books contain great photographs and illustrations, short stories and advertising for aviation related products by companies such as Junkers, Messerschmitt, Fieseler, Heinkel, Henschel, Focke-Wulf, Arado, Dornier, Mercedes-Benz, Hensoldt, Neophan, Mauser, Walther and others. Verlag Scherl also advertised their other Adler aviation books, magazines and calendars.