Johannes Gerard van Dillen

In 1920, he assumed a role at the Bureau for the Rijks Geschiedkundige Publicatiën (RPG), an institution dedicated to publishing historical sources.

Additionally, he held the position of secretary in the editorial committee of the Tijdschrift voor Geschiedenis, Land- en Volkenkunde.

Despite being a socialist who disapproved of bolshevism, Van Dillen faced a surprising challenge when Nicolaas Wilhelmus Posthumus recommended him as a successor for a chair at the Nederlandsche Handels-Hoogeschool in Rotterdam.

Van Dillen is credited with authoring several significant works on the history of trade and banking in Amsterdam and the Netherlands.

He also played a pivotal role in editing primary sources related to the Wisselbank and guilds.