Gualtherus Johannes Cornelis Kolff
Gualtherus Johannes Cornelis Kolff was the co-founder of G. Kolff & Co., a publishing company in Batavia, Dutch East Indies of the Bataviaasch Nieuwsblad newspaper. The company also operated book shops. In the years after Indonesia became independent, the company moved to the Netherlands, and is now based mostly in Amsterdam and Leeuwarden.
