Documentary short film: "The Land of the Marimba" - Producer (1937) Documentary short film: "Netherlands Old and New" - Producer (1938) Documentary short film: "Insect Oddities" - Producer (1938) Documentary short film: "Tropical Springtime" - Producer (1939) Documentary short film: "The Secret of Cocos Island" - Producer (194?) MiniCine Filmstrip: "Flowers of Wood and Meadow" - Script and Illustrations (194?) MiniCine Filmstrip: "Flags of All Nations" - Script and Illustrations (194?) MiniCine Filmstrip: "Familar and Strange Fungi" - Script and Illustrations
