The Folk Singers and the BureauBy: Aaron Leonard The first book to document the efforts of the FBI against the most famous American folk singers of the mid twentieth century, including Woody Guthrie, 'Sis Cunningham, Pete Seeger, Lee Hays and Burl Ives. Some of the most prominent folk singers of the twentieth century, including Woody Guthrie, 'Sis Cunningham, Pete Seeger, Lee Hays, Burl Ives, etc., were also political activists with various associations with the American Communist