A Capella Folk Songs

Magpie\ Good People\ Give Light\ Sliced Bread
Lauren Sheehan\ Rattlesnake Mountain\ Some Old Lonesome Day\ Self
Cosy Sheridan\ Lord Blow the Moon Out\ One Sure Thing\ Waterbug

The Welsh trio "Plethyn" has many a capella songs.

    Street Sounds           Sweet Honey         Golden Gate Quartet
    Sovoso                  Swingle Singers     Zap Mama
-Dave (The Melting Pot) Gardner

From: asubdude@att.net

Almeda Riddle 
any 
Songcathcer 2

Robin & Linda Williams  
Across the Blue Mountains  
Live in Holland

Ginny Hawker / Tim O'Brien
Oh, Have You Seen That Turtle Dove
Letters from My Father

Son House
Grinning In Your Face
John the Revelator
Father of The Delta Blues

Magnolia Sisters
I'd Like to Get Married But....
Prends Courage

Hazel Dickens 
Pretty Bird
A Few Old Memories

David Francey
Torn Screen Door
Torn Screen Door

-also
29 Toes / Of the World / A Musical Doorway (SFS)