Deletion of Kjell (letter)

Comment: I cannot find any reliable English sources (scholar, books, news), and for the cited source I have to AGF (no google preview). With only one source, it doesn't seem to pass . If more sources could be provided (perhaps by a Norwegian speaker), I would be happy to reconsider, but one book mention, likely in passing, doesn't establish notability
Stance: merge
Cited policy: Wikipedia:Notability (WP:GNG)