The Four Chief Commissioners of the Amsterdam Harbor Works; Group portrait of the four chief commissioners of the ports; walls and cranes in Amsterdam; sitting around a table (from left to right): Christiaan Scholten; Christiaan van Orsoy; Jan Petrus Scholten van Aschat and Frederik Alexander Vern鑔e. On the table are books; paper and an ink set. On the back wall the weapons of the four portrayed men.; Wybrand Hendriks; 1791 - 1795; canvas; oil paint (paint); h 198.5 cm x w 213.1 cm x t 3.9 cm d 9 cm w 39 kg