Archives ou correspondance inédite de la maison d’Orange-Nassau
Beatrix and Constantijn. Correspondance between Béatrix de Cusance and Constantijn Huygens 1652 -1662
Boschdoc
Clusius correspondence
Correspondance de Guillaume le Taciturne, prince d’Orange
Correspondance of Isabelle de Charrière
Correspondence between Elias Canneman and Isaac Jan Alexander Gogel
Correspondence of Anthony Heinsius 1702-1720
Correspondence of Hugo Grotius 1597-1645
Correspondence of Simon van Slingelandt and Sicco van Goslinga 1697-1731
Correspondence of the Dutch and Frisian Stadtholders’ Wives, 1605–1725
Correspondence of Willem III and of Hans Willem Bentinck 1656-1702
ePistolarium (Circulation of Knowledge and Learned Practices in the 17th-century Dutch Republic)
Groen van Prinsterer. His written legacy. Correspondence from 1808-1876 and papers from 1821-1876
Letters and correspondences around 1900 (Witsen and Verwey)
Letters and other papers related to Daniël van der Meulen 1584-1600
Letters by Geertruida Bosboom-Toussaint (1812-1886)
Official letters of the United East India Company (VOC), 1610-1795
The correspondence between G. J. P. J. Bolland and P. J. Cosijn (1879-1899)
The correspondence of Constantijn Huygens 1608-1687
The correspondence of J.R. Thorbecke 1830-1872
The Correspondence of William of Orange 1549-1584
The memoirs of Anton Reinhardt Falck 1828-1837
