Herdeg, Walter, 1908-1995 (Autor Personal)

Das goldene buch der Schweiz, 1942.

Designers books WWW site, Dec. 5, 2011 (Walter Herdeg (1908-1995); graphic designer, author, publisher)

AIGA WWW site, Dec. 5, 2011 (Walter Herdeg was born in Zürich Jan. 3, 1908)