Bidspirit auction | 3 books german Railway/Reichsbahn 1925-1939

3 books german Railway/Reichsbahn 1925-1939 - 3 Titles Railway/Reichsbahn, The Railway in Pictures, Photo album 1925, Part 2; Surveying Reichsbahn, Lpz. 1938; Development of Single-Chamber Air Brake, Bln. 1939, supplementary volume, numerous photos, illustrations, 2 color plates, total 312 p.