Jerz, "The Experimental seduction of mechanistic modernism..." (handout; available online, but I've annotated a printout to emphasize what's important for our purposes)
Jerz, Technology in American Drama (excerpts; handout)

Expressionism in Film
Fan page, The Cabinet of Dr. Caligari
Wikipedia: The Cabinet of Dr. Caligari

Mechanical Music: Antheil's Ballet Mechanique
Wired magazine article | FAQ | Film | RealAudio Sample