His Waren das Zeiten, 1983: t.p. (Gustav Fröhlich)
Fritz Lang’s Metropolis [VR] 1998: opening credits, cast (Gustav Frohlich)
Internet movie database, Oct. 11, 2002: (Gustav Fröhlich; b. Mar. 21, 1902, Hanover, Lower Saxony, Germany ; d. Dec. 22, 1987, Lugano, Ticino, Switzerland ; sometimes credited as Gustav Froehlich, Gustav Froelich; actor, writer, director, German films, 1920s-1960s)