Here's a great weekly internet only radio show that is playing rare live recordings made in the San Francisco bay area from 1979 to 1981. All shows are steaming so you can listen whenever you got the time. Bands played so far are Readymades, Contractions, Mutants, Avengers, Jim Carroll Band, SVT, Lydia Lunch, Dead Kennedys, Times 5, Lewd, Offs, Shakin' Street, Wreckless Eric, VKTMZ, Sudden Fun, Toots & The Maytals, Bob Marley and a few others. Most of these shows have never been officially released and haven't been in circulation in trade circles as far as I have seen. There's lots of good stuff so go have a listen.
http://www.kusf-archives.com/2012/02/kusf-in-exile-21712-3-4-pm-fab-mab-live.html
http://www.angelfire.com/oh/liveperformances/livetapes.html