No.	Title	Date
1	Las cosas de Venezuela
2	Daniel De Leon : the man and his work : a symposium
3	The pocket guide to the West Indies
4	The pocket guide to the West Indies : British Guiana, British Honduras, the Bermudas, the Spanish Main and the Panama canal
5	The pocket guide to the West Indies : British Guiana, British Honduras, Bermuda, The Spanish Main, Surinam and the Panama Canal
6	The pocket guide to the West Indies
7	The pocket guide to the West Indies and British Guiana, British Honduras, Bermuda, The Spanish Main, Surinam, the Panama Canal
8	The pocket guide to the West-Indies, British Guiana, British Honduras, Bermuda, the Spanish Main, Surinam and the Panama canal
9	The pocket guide to the West-Indies, British Guiana, British Honduras, the Bermudas, the Spanish Main and the Panama canal
10	Suriname en de Nederlandse Antillen in de Verenigde Naties : verslag van de handelingen der zesde algemene vergadering (november 1951-februari 1952) terzake van het beëindigen door Nederland van de rapportage over de West-Indische Rijksdelen
11	Le tombeau de Saint Martin de Tours : notes et documents sur la découverte du tombeau, le rétablissement du culte de saint Martin et la reconstruction de la Basilique, 1854-1893
12	Verhandelingen van het Koninklijk Nederlandsch Geologisch-Mijnbouwkundig Genootschap.