Das freie Zeichnen: ein Weg für den Unterricht im Zeichnen nach Natur- und Gebrauchsgegenständen
A 1925 German drawing-instruction book edited by Franz Čižek and Hermann Kastner, issued for schools and teachers, presenting free drawing from nature and everyday objects. Its plates show students' black-and-white reproductions of folded planes, leaf and plant silhouettes, and shaded solid forms built from blocks and wedges. A designer might draw on the stark cut-paper planes, bold leaf silhouettes, and hard-edged constructed volumes for graphic compositions.
