Étude théorique et pratique de la mise en scène théâtrale. Poète, décorateur, historien du théâtre et metteur en scène, Léon Moussinac (1890-1964) fut de toutes les expériences théâtrales déterminantes de son temps. En 1927, il écrivit avec Paul Vaillant-Couturier, "Le Père Juillet", pièce expérimentale au carrefour du dadaïsme et de l'agit-prop.
Léon Pierre Guillaume Moussinac is a French writer, journalist, historian and film critic. His theoretical and historical works, brought together for the first time in 1925 in his essay Birth of Cinema, preceded, with the exception of the works of Louis Delluc, all works devoted to cinema. Arrested in April 1940 for "communist propaganda", he was interned in the Gurs camp. In October 1940, he was transferred with a group of 85 detainees to the Nontron military prison. Léon Moussinac was finally tried and acquitted in November 1941. He then joined the Resistance movements. Its archives are kept in the Performing Arts department of the National Library of France.