Frontispiece Design Sketch for Frederick Hendrick van Nassauw
In many instances, the sketches for title page designs have not been preserved. The Rijksmuseum is thus fortunate to own two successive drawings of the Triumph of Frederick Henry by Pieter Jansz, who was also active as a stained glass painter. They differ little from one another.
Drawing with pencil, as used for this design sketch, allowed the artist to rub out mistakes and make changes: this was much more difficult to do with ink.