" Hagen und Darmstadt, Folkwang-Verlag, 1923, 2 vols in-4°. 59 pp + 67 plates (a few folding) ; 32 pp + 76 black/white plates. Both volumes bound in publisher's half cloth, with printed boards. Volume I is '' Band XI'' in the series '' Kulturen der Erde''. Vol. II is Band XII."