Maintained by Oberlin College Library and Sing Out! An index of thousands of folk songs throughout the world, with an emphasis on those in the English language.
Lift Every Voice and Sing
From an exhibit at the University of Virginia this site presents an historical portrait of music in American life, with selected audio clips from early twentieth century recordings.
Mudcat Café Wonderful resources for lyrics and tunes of traditional American folksongs (with many variants), some blues, bluegrass, links to sites with free and legal downloads. Links to a commercial “record” store, where many different interpretations of tunes are available for downloading.