Among the innovations introduced by Albrecht Dürer in the medium of woodcuts is the monogram, which identifies him as the author of the design. Before that, woodcuts – unlike copperplate engravings – were only signed in exceptional cases and if, presumably by the editor. For it was the editor who stood at the end of a complex production chain involving several specialists: the draughtsman who supplied the design, the cutter (Formschneider) who cut it into the wood and the printer who produced the prints on paper. Dürer’s idea quickly found imitators: from the beginning of the 16th century, most woodcuts bore the monogram of the designer. How closely the signature was linked to the claim to originality can be exemplified by Hans Baldung Grien’s woodcut “St. Jerome in the Desert” (1511). The tablet with the monogram, which lays hidden in a cave, clearly demonstrates the creative potential of signatures but also reflects on issues of authorship in the woodcut: While the printed image is the product of the engraver and the printer, the contribution of the artist responsible for the design can only be found as a trace.