Bezoek Willem III aan vader van de gesneuvelde generaal Johan Harmen Rudolf Köhler (1873), Johannes Hinderikus Egenberger, 1873

Visit by william iii to the father of the general johan harmen rudolf köhler, who died in aceh, in groningen, on the left his father johan hendrik köhler and his sons johan hendrik meint rudolff, johan anton and henricus jacobus and his daughter catharina margaretha johanna, in the middle willem iii and on the far right his chamberlain mr. Alberda van ekenstein. Date: 1873.