Wagner, H.-U. (2011): Die Norag 1924-1931. Binderstraße 28, Schlüterstraße 51-53. [The "Nordic Broadcasting Stock Company" 1924-1931]. Entry in the webproject „Kulturtopographie Hamburgs um 1900“. Available online
Wagner, H.-U. (2011): Die Norag 1924-1931. Binderstraße 28, Schlüterstraße 51-53. [The "Nordic Broadcasting Stock Company" 1924-1931]. Entry in the webproject „Kulturtopographie Hamburgs um 1900“. Available online
2011