In his Village Voice "Movie Journal" columns, Jonas Mekas captured the makings of an exciting movement in 1960s American filmmaking. Works by Andy Warhol, Gregory J. Markapoulos, Stan Brakhage, Jack Smith, Robert Breer, and others echoed experiments already underway elsewhere, yet they belonged to a nascent tradition that only a true visionary could identify. Mekas incorporated the most essential characteristics of these films into a unique conception of American filmmaking's next phase. He simplified complex aesthetic strategies for unfamiliar audiences and appreciated the subversive...