The N.W. Posthumus Institute, hosted by the Faculty of Humanities of Leiden University, is the Research School for Economic and Social History in the Netherlands and Flanders, a cooperation between fifteen participating universities and research institutes

Photo header: Bakers and delivery men and women of baker J. Moolenbeek (Nieuwegracht 125) in Utrecht. Photo by unknown maker, between 1925 and 1940. Image 500272, Collection Het Utrechts Archief (Public Domain).