Sources

1 The Digitalarkivet Census for Norway, http://digitalarkivet.no/cgi-win/WebFront.exe?slag=vis&tekst=meldingar&spraak=e (A joint project between The National Archives of Norway, The regional Archive of Bergen and The Department of History, University of Bergen.), The 1900 census for Gøtheborgsgaden 23 in Kristiania.