Life of Galileo
Brecht's 1955 "Collected Works" names Steffin as the collaborator on "Roundheads and Peakheads", "Señora Carrar's Rifles" and "The Horatians and the Curiatians". In addition Brecht acknowledged her role in "Fear and Misery in the Third Reich", "Life of Galileo" and "Mother Courage". She is also thought to have had a large hand in "Mr Puntila and his Man Matti", "The Good Person of Szechwan", "The Resistible Rise of Arturo Ui", and "The Caucasian Chalk Circle".