Baker
Dict. biographique des musiciens / Theodore Baker, Nicolas Slonimsky, 1995
Flagstad / by Edwin McArthur, 1965
Haugtussa op. 67 [Enregistrement sonore] / Grieg ; Kirsten Flagstad, S ; Edwin Mc
Arthur, p. His master's voice DB5833
LC authorities - http://authorities.loc.gov (2005-04-29)