Discovering Amos Vogel‘s Film as a Subversive Art (1974) was a blast and leafing through the book today still is a thrill (see for example a still I posted on my new NSFW tumblr blog). The book is a milestone in the history of subversion.
Now online is Film as a Subversive Art: Amos Vogel and Cinema 16 (UK, 2003) , a documentary about Amos Vogel (1921 – 2012) and the film society Cinema 16.