Finthen bei Mainz: Verlag Dieter Hoffman, 1964, 1964, 1966, 1969,
First Edition. octavo, light blue cloth in dust jackets. 176, 192, 192, 192pp. Verlag Dieter Hoffman, Item #28654
Extensively illustrated with photographs. Although it was not necessary, the inner top and bottom of the jacket have been reinforced with a 1 x 2 inch piece of tape. This did not affect the jackets visually. This is still a fine, clean set, jacket not clipped.