[78-L] ethnic recordings

[Malcolm Rockwell]

With the glut of American indie record companies popping up after WW2, 
more than a few were geared toward ethnic communities within the US.  Is 
there anyone besides the Arhoolie Foundation doing research on American 
manufactured ethnic labels, especially the  post WW2 companies? I'd be 
especially  interested in seeing info on East Coast labels. Seems like a 
rich field for tapping, discographically (or labellographically) speaking.
Mal