.: 2. München, s.d. (ca. 1910), sm. in-8°, 116 pp, b/w ills., orig. wrappers. (stamp on title).
.: 2. München, s.d. (ca. 1910), sm. in-8°, 169 pp, b/w ills., orig. half cloth.
.: 2. München, 1920, in-8°, 148 pp, b/w ills., index, orig. wrappers.