How much...
...of the footage was simply lifted from 'C-cksucker Blues (1972)'?
I've heard that the film is mostly contemporary interviews with archival footage... I have to assume most of that archival footage came from Robert Frank, but I'm wondering if it's stuff we've seen before or stuff he didn't use in his film.
A lot of strange things happen in this world. Things you don't know about in Grand Rapids.