Andy Denzler trained at the Kunstgewerbeschule and the F&F Schule für Gestaltung in Zurich, both schools of applied arts, as well as at the University of California, Los Angeles, and the Art Center College of Design, Pasadena.
Wyss trained in the School of Art and Design (Kunstgewerbeschule) in Lucerne between 1960 and 1961 and then the Art School of Zurich from 1965-66 with Bruno Stamm.
She studied pottery under Michael Powolny at the Vienna Kunstgewerbeschule, a school of arts and crafts associated with the Wiener Werkstätte (the "Vienna Workshops").
enrolls private painting school of Anton Ažbe, and in the same year the Kunstgewerbeschule in Munich.
After his graduation from Kunstgewerbeschule, Herdeg went on to continue his studies in 1928 under the guidance of Otto Hermann Werner Hadank (O.H.W Hadank), a leading figure in German package design.Two years later, Hadank would extend to Herdeg the same hospitality as Keller did, by employing him as a calligrapher, package and logo designer.