German Military Aviation 1937-1945. 8 folio books on Bombers, straffers, weapons, photography, and production (2 of 1943-1944 showing all kinds of production records). Also 1938 yearbook. Some appear nearly unique. The average size 8″ x 12″ and the pile is 6″ tall. Original flexible covers. All very good condition. Variously illustrated with drawings, photographs, and charts.