Annette Kuhn's Cinema, Censorship, and Sexuality 1909-1925 offers an
interesting and thoughtful theoretical perspective on censorship (as, following
Foucault, not simply a prohibitive but also a _productive_ act).  You might
also want to look at Edward de Grazia's Girls Lean Back Everywhere: The Law of
Obscenity and the Assault on Genius.  The book is not about film specifically,
but it offers a useful history of obscenity law that focuses on artists and
authors.  Even if you're more interested in film this book might be useful to
you- to help you get a broad picture of how censorship operates across texts,
not just how it operates in relation to films.
 
Heather Hendershot
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