Reise ins Asiatische Tuwa / Otto Mänchen-Helfen. Berlin: Der Bücherkreis, 1931
“Besides book design, Tschichold’s work for the Bücherkreis also includes a complete re-design of the logo, stationery and advertising materials. The new logo first appears in 1931, at the same time as the jacket, and replaces the previous illustrative logo with a more simplified pictogram”.
Kirsten Schneider. “Workers’ literature meets the New Typography: Jan Tschichold’s work for the Bücherkreis”. Baseline, nº 37, 2002 (p. 9)