Interested in learning more about Keystone films? "La Naissance de Charlot - Keystone 1914" is a semi-annual review published by Thierry G. Mathieu in France. It is a great source for learning more about Chaplin's work at Keystone as the publication covers step by step, in detail, all the films in order. The work continues, until all the films have been covered. Check this link to Thierry website to learn more and see what has been done, what is in store and how to order.