My first QSL in years in Norwegian language: "Hei Arnstein, Tusen takk for rapporten!"
OK, the rest of the very nice email from Dennis Haarsager was written in English :-)
His grandparents were both born in Stadsbygd, quite close to where my parents were born. Dennis mailed the QSL card of KWSU 1250 AM today. Thank you, Dennis - I'm quite sure we'll stay in contact.