Nordic historical novels

There aren't that many available in English. Considering the prodigious output of 19th and 20th century Scandinavian historical novelists like Jonas Lie, J.P. Jacobsen, Verner von Heidenstam , Sigrid Undset, Selma Lagerlöf, Knut Hamsun, Gunnar Gunnarsson, and nearer to our own time Väinö Linna, Ulla-Lena Lundberg and Carsten Jensen, it's surprising that more of their work hasn't been translated.