The drawings are often from travel -and sketchbooks.They can be fast drawings in a very small sketchbook, but sometimes they can be quite big and finished with watercolor or crayon.

The drawing can have (oriental)landscapes as a subject  or temples and religious ceremonies.Mainly Hindu and Buddhist ceremonies are favorite subjects.

Drawings are used as sketches for bigger works made in the studio in Amsterdam, or if they are big finished in the studio usually with color.