Some book titles to get you started. This is not an exhaustive list!
Härute - out here: Swedish immigrant artists in Midwest America. An exhibition of works from Augustana College and the Quad Cities community
Kirn, Mary Em.; Maurer, Sherry Case.; 1984.
Modern Swedish design: three founding texts
Åhrén, Uno, et. al, 2008.
First annual exhibition of works by Swedish-American artists
Swedish-American Art Association, 1929.
Swedish folkart: floral and kurbits designs
Edwards, Diane, 2005.
Swedish folk art: all tradition is change
Widbom, Mats.; Klein, Barbro Sklute.; 1994.
Norwegian folk art: the migration of a tradition
Nelson, Marion John, et.al, 1995.
Design basics for Swedish folk art Vol 1
Edwards, Diane, 2010.
Den svenska hemslöjden. Handcraft in Sweden.
Henschen Ingvar, Ingegerd, 1951.
Painting by Minnesotans of Norwegian background, 1870-1970
Nelson, Marion J., 2000.
The Swedish vision : landscape and figurative painting 1885-1920 : an exhibition organised by Moser & Klang, Stockholm in conjunction with Christopher Newall, London at Shepherd Gallery, New York, Oct. 16th to Dec. 7th, 1985
Moser, Claes.; Newall, Christopher.; 1985.
Art in Sweden: leaving the empty cube: contemporary Swedish art
Engblom, Soren, 1998.
Carl and Karin Larsson: creators of the Swedish style
Snodin, Michael.; Stavenow-Hidemark, Elisabet; 1997.