The Americanization of expressionism: The hairy ape (1922) and The adding machine (1923)
Sensualizing and sanctifying technology: Machinal (1928), The subway (1929), and Dynamo (1929)
Theatre of the Thirties: machines to socialize the soul: Waiting for lefty (1935), Alters of steel (1937), and O, pyramids! (1933)
Balancing the nuclear and the greater human family: The skin of our teeth (1942) and All my sons (1947)
Emotionally and thematically integrated technology: A streetcar named desire (1947) and Death of a salesman (1949).