Hello from Sweden.
Interesting about Arne A. My sources (among swedish immigrants to Chicago) says Arne was declared dead at midnight,to febr 25, from a heartattack. Alos swedish late writer SE Feinstein says so, he also says there was no blow. Arne fell backwards (from his heartattack).
The correct name of Arnes first opponent in a professional fight, is Gaston Vircoulon, undercard to John Andersson/Rienus de Boer.
Arne won KO3.