- ↑ Chuck Foster Roots Rock Reggae: The Oral History of Reggae Music from Ska to Dancehall Chuck Foster. 1999 "Some, like Lloyd Jones, Dobby Jones, Leo Graham, and Levi Williams, are known only for a few tantalizing singles."
- ↑ The Beat - Volume 16 1997- Page 21 "Congo is the son of Jamaican singer Leo Graham, who cut some wicked '70s singles like "Perilous Time," "A Win Them" and "Not Giving Up" for Joe Gibbs and a series of burning "Big Tongue Busters" (the name of one of them) for now-legendary producer Lee "Scratch" Perry. Militancy (RUN- Netherlands) is Daweh Congo's first album and though it and he may evoke the spirit of those singers he's developed..."
- ↑ David N. Howard Sonic Alchemy: Visionary Music Producers 2004 "Perry further defined his herb-roasted rhythm sound on a number of productions for reggae vocalists including Leo Graham, Dave Barker, and, most importantly, Junior Byles."
