He was an author and published a number of books which have been translated into many languages. Toeplitz also, for almost 30 years (1948–1971), was the president of the International Federation of Films Archives (FIAF), where he accomplished a very important role, overall in the Cold Warconjuncture, especially into a very big crisis of the FIAF's history (perhaps the worst), when Henri Langlois (one of the Cinemathèquè Française's founders) left the FIAF. Toeplitz's job was a very important differential (typical of his generation) because he was a cinema's teacher and a leader of an educational project in the Polish city of Łódź (a reference into the period). This school had a decisive impact on the modern cinema in Poland.