I came across two sample books containing printed examples of the work executed by the students in the Composing and Machine Departments of the Polytechnic School of Printing, between 1907 and 1910. I couldn't resist adding these to the archive.
The best poster designs from Die besten Plakate des Jahres 1956 with a translated foreword by Jakob Rudolf Welti. Featuring the work of Herbert Leupin, Carl B. Graf, Carlo Vivarelli and Emil Ruder.
They were many other designs who played an important role in IBM's graphic identity and implementation. Some of the other designers included Arthur Boden, Clarence Lee, Charles Keddie and Mary Beresford.