Belgische annexatie-ideeën Date of creation1918, 21 decemberCollectionThe Dutch Labour Movement till 1918
Het bolsjewisme en de revolutionnairen in Nederland Date of creation1918, 14 decemberCollectionThe Dutch Labour Movement till 1918
George V King of Great Britain and Ireland Date of creationca.1936CollectionThe Dutch Labour Movement till 1918
Van de tentoonstelling van Marie de Roode-Heijermans Date of creation1919, 12 aprilCollectionThe Dutch Labour Movement till 1918
Willem van Ravesteyn Jr. Date of creation1919, 28-29 juniCollectionThe Dutch Labour Movement till 1918