Many of his books contain stories and puzzles in which the reader searches the illustrations for clues to the mystery.
[1] He served for about four months during World War II, when he was captured in France and transported to Marseille, where he was shipped to Oran.
In 1953 he began to illustrate for "sternchen", the children's supplement of German magazine stern.
He invented Der kleine Herr Jakob [de], a little man with moustache and bowler hat who never talked but whose comic strips were commented in verse.
[4] Press was one of the inventors of the "Wimmelbild", a genre of illustration deliberately overcrowded with detail, to please children on their search for a certain item.