"The present work is based on my History of the Netherlandish race (Geschiedenis van de nederlandsche stam), and more particularly on the first half of the second volume, which was published by the Wereld-bibliotheck, Amsterdam, in July 1934. It continuesthe story where the revolt of the Netherlands left off."-Pref.

"Source of the quotations": p. (263)-267. "Note on sources and secondary works": p. (268)-270.