No.	Title	Date
1	The pocket guide to the West Indies : British Guiana, British Honduras, the Bermudas, the Spanish Main and the Panama canal
2	The pocket guide to the West-Indies, British Guiana, British Honduras, Bermuda, the Spanish Main, Surinam and the Panama canal
3	Marginal languages: a sociological survey of the Creole languages and trade jargons
4	Marginal languages: a sociological survey of the Creole languages and trade jargons
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 and British Guiana, British Honduras, Bermuda, The Spanish Main, Surinam, the Panama Canal
7	Taal en letteren
8	Neerlandia : orgaan van het Algemeen Nederlandsch Verbond