The Heinkel He 111 bomber or Kampfflugzeug was originally developed as a German civilian airliner.  It was due to the business sense of its designer Ernst Heinkel that it ultimately became a mass produced, twin engined bomber for the German Luftwaffe.  The He 111 flew over every front from the first day of World War II to the last and was among the most produced German aircraft of the war.  Aerodynamically a clean aurcraft it proved to be both a superior and very reliable aircraft during the first two years of the war.  Despite eventually becoming obsolete towards the middle and late war years, it continued to soldier on until the defeat of Nazi Germany in May, 1945.  Owing to its great flight handling characteristics and its reliability, however, it continue to fly in Spain up through the mid 1960s.  The book He 111 Over All Fronts documents the development and operational history of the He 111 from the Spainish Civil War to the end of World War II thorugh the use of many interesting black and white photographs.  This book is 48 pages and is in like new condition.  The author is Franz Kober.  Edtion published in 1991.