This book describes and illustrates the development of German single-engine night bombers, or N-types, in WWI with text, 54 rare, period photos, 7 color photos, 9 color profiles, tables of information including production quantities, serial numbers of aircraft, technical specifications, 1/48 scale drawings of the AEG N.I and Sablatnig N.I, and 1/72 scale drawings of the BFW N.I. The origins and evolution of the N-class are discussed in the context of the German strategic and tactical situation. The book has 44 pages.