If you want to read more about the Dutch Filmliga, there is a lot of information to be found online. Sites are mainly in Dutch.
One of the founders of the Dutch Filmliga was Menno ter Braak. Foundation Menno ter Braak has embraced the task of digitizing the entire written archive of this journalist, including all his correspondences regarding the Dutch Filmliga. Documents have been scanned and are searchable.
Hans Schoots wrote a very interesting article about the history of the Filmliga from the viewpoint of founder L.J. Jordaan.
If you want to know more about the influence the Dutch Filmliga has had on Dutch filmculture we recommend reading this insightful article by Koen van Leeuwen.
English readers might want to check out this piece about dutch film history, which includes some paragraphs on the Dutch Filmliga.
The aforementioned Hans Schoots also wrote this article in which he compares Dutch filmmaker Joris Ivens (member of the Filmliga) and German avant-garde filmmaker Walter Ruttman.
E*Cinema will show the famous classic Man with a Movie Camera by Dziga Vertov. Here you can find a great site which features the project Man With a Movie Camera: The Global Remake. What they aim to do is to create:
a participatory video shot by people around the world who are invited to record images interpreting the original script of Vertov’s Man With A Movie Camera and upload them to this site. Software developed specifically for this project archives, sequences and streams the submissions as a film. Anyone can upload footage. When the work streams your contribution becomes part of a worldwide montage, in Vertov’s terms the “decoding of life as it is”. (http://dziga.perrybard.net/)
For a short example of what to expect on this site: