I just saw your posting from 2000.
I am the granddaughter of Gust Dahlstrom, brother of Louis, named Lars, but known as Louis (even on the death record in California.
The family moved to Turlock, California at the turn of the century. I am also looking for information on this family line and an willing to share the information I have on Louis' siblings.
The Turlock Historical Society put out their periodical, The Turlock Pioneer, with an article on the family, in Spring 2000. There are pix of the family taken in 1916.