Lion,

The series you're thinking of was called Blues Paperbacks, and it was published by Studio Vista. It consisted of a series of approx 100 page monographs by individual authors, under the editorship of Paul Oliver. Blacks Whites and Blues, written by Tony Russell was part of the series.

The series has been long out of print, although three titles have been republished in one volume as Yonder Come The Blues. The titles in question are: Savannah Syncopators (Paul Oliver), Blacks, Whites and Blues(Russell)and Recording the Blues (Dixon and Godrich). Cambridge University Press, 2001.

Also, John Fahey's volume on Charley Patton has been republished as part of Revenant's massive, and massively expensive, retrospective on Patton; Screaming and Hollering the Blues.

"From: Lion Robert...................a series of books called Blacks, Whites and Blues. Don't know the author of those...................."