The Music Maker Relief Foundation does good deeds for down and out bluesmen and blueswomen and they put out great music that we  play on the Saturday Blues.  Artists like Guitar Gabriel, John Dee Holman, Etta Baker, and on and on grace the Saturday Blues (and certainly many other radio shows) thanks to the efforts of the Music Maker Foundation.  They also publish phenomenal photographs.   Check out their website for more information on their good works, and good tunes, and interesting stories.