James Knirk at www.forskning.no: « Det finnes en liten klikk med amerikanere som sverger til at steinen er ekte. De er stort sett skandinaviskættede realister uten peiling på språk, og de har store skarer med tilhengere. » Traduction en anglais : There is a small clic of Americans who swear to the stone's authenticity. They are mainly natural scientists of Scandinavian descent with no knowledge of linguistics, and they have large numbers of adherents. The runestone has been analysed and dismissed repeatedly without local effect.
Voir : E. Wahlgren, The Kensington Stone: A Mystery Solved (Madison: University of Wisconsin Press) 1958 ; T. Blegen, The Kensington Runestone: New Light on an Old Riddle (St Paul: Minnesota Historical Society) 1968 ; R. Fridley, « The case of the Gran tapes », Minnesota History45.4 (1976:152-56) ; B. Wallace, « Some points of controversy », in B. Ashe, ed. The Quest for America (New York: Praeger) 1971:154-74 ; E. Wahlgren, The Vikings and America (New York: Thames & Hudson) 1986.
