Biomechanical researchers who analyze data collected cinematographically usually acknowledge the work of late 19th-century cinematographers Eadweard Muybridge (United States and England), Etienne J. Marey (France), Christian W. Braune, and Otto Fisher (Germany). The acknowledgement is then typically followed by a review of the current literature. But most of these studies delete the significant“middle generation”of cinematographers—1930–1939—a particularly fruitful decade during which motion pictures were used to help identify biomechanical principles. This discussion will focus on the cinematographical studies of W.O. Fern, H. Elftman, R.B. Glassow, E. Jokl, and T.K. Cureton, who have given biomechanics a rich legacy and helped define the discipline as it exists today.