Blues - articles

Mabry, Donald J., "The Rise and Fall of Ace Records: A Case Study in the 
Independent Record Business," Business History Review, 64 (Autumn, 
1990), 411-450.

Yurchenco, Henrietta. ""Blues Fallin' down like Hail": Recorded Blues, 
1920s-1940s." American Music. v. 13, nr 4, Winter '95. pp 448-469.