SCHULTEN, BARBARA. Madaus: Eine aufgeschlossene Firma [Madaus: An Innovative Company]. Edited by Siegfried Lewelhardt. Illustrated with full-page reproductions of Schulten's photographs, including pop-up inserts, 1 color fold-out poster, a reader reply card, and tipped-in ephemera. 4to, photo-pictorial wrappers; binding tender and starting at front hinge; photo-pictorial slipcase. Parr/Badger II 196. first edition. (Cologne): Dr. Madaus & Co., [1969]