Explore dozens of works by Willem Bartel van der Kooi. Study their dramatic compositions, lighting techniques, and color work from The Love Letter, Wife of Sebastiaan Leerse, Portrait of Adriaen Pieter Twent, Count of Rosenburg, Minister of Public Works, Minister of the Interior, Chamberlain of King Louis Napoleon, and Wolfgang Wilhelm (1578-1653), count palatine of Neuburg, duke of Gulik and Berg