Geography films
In the early years, films for geography lessons dealt primarily with ‘Dutch’ subjects. They documented the location, landscape and soil composition of specific cities or regions (Giethoorn, Zuiderzeepolders VI: na 10 jaren arbeid) or local economic activities (Giethoorn, Kaas, Zuiderzeepolders VI: na 10 jaren arbeid, Twentse textielindustrie). Later, when the NOF distributed also third party materials, its collection expanded and began to cover a geographically much wider area. Films about other countries and parts of the world often had an ethnographic slant: they showed not only the location of or economic activities in a particular region, but also addressed the customs and habits of its residents. Films on physical geography topics – about the operation of the universe, for example, or processes of erosion – made more intensive use of diagrams, and later also animations.