Drupsteen worked as a graphic designer for NOS and VPRO; he specialized in making station identifications, music videos, and other video and television productions.
^Cuhaj, George S. (2009). Standard Catalog of World Paper Money: Modern Issues - 1961-Present (15 ed.). Iola, Wisconsin: Krause Publications. pp. 679–681. ISBN978-0-89689-837-0.