Buen, Knut: A review of the fiddler's CD, "Hardanger Fiddle Music of Norway".
Een, Andrea: Performs on the Hardanger fiddle, and teaches violin and viola; based in Minnesota, US. Includes her biography, discography, performance schedule, audio samples, and contact details.
Fashioning the Hardanger Fiddle: A multimedia presentation of the instrument, its history, how its played and constructed.
Hardanger Fiddle Association of America: Organization preserving and promoting traditional Norwegian folk music and dance. Membership information, mailing lists, calendar, and FAQ.
Hardingfele: Otherwise known as the Hardanger fiddle, Norway's national instrument; Wikipedia article describes its construction, tuning, and playing style.
Norwegian Folk Music Collection: Offers substantial ethnomusicological articles about the traditional fiddle music of Norway, with a database (in Norwegian only) of transcriptions of tunes. [University of Oslo]
Strand, Valdres Sjugurd (1837-1939): A profile of the man who was possibly America's oldest Hardanger fiddler.
Twin Cities Hardingfelelag: A Hardanger fiddle group keeping the tradition alive; information about their activities and contact details. [Minneapolis, US]
Wulffenstejn Hardanger Fiddle and Mandolin Works: Luthier firm specializing Norwegian hardanger fiddles offers information about the instrument, how it is made; also offer a repair service, sales of fiddle accessories, and audio clips. [Utah, US]