While moving and unpacking I recently came up on a VHS of early 90's Chicago graffiti. There is large coverage of permission and chill spots like Walls of Style, Walls of Grace, Imperial Furniture, the CTA competitions, and more. It has a section with riding the redline and harassing a CTA worker. Oh yeah, and there is a part with Artistic BASF2 spinning records in his bedroom.
It's chalk full of some of the sickest work from Ice-Pack, Chi-Rock, Fedz, THC, ASC, SB, J4F DC5, UEMF, and others... I can't remember where I originally picked it up, perhaps Time2Pound or BOMB records in East Chicago IN. Who knows?