Bergström - Sweden/Detroit

[Håkan Bergström]

I'm interested in getting in contact with descendants of three sisters that emigrated from Sweden to Detroit, MI during the early 1900's.
 
ALVA Serafia Bergström b. 2 Sept 1881, married Olson. I think she also used the name Alma.
 
HILJA Otiliana Bergström b. 4 Aug. 1885, married Ketola (?).
 
HULDA Eufemia Bergström b. 8 Nov. 1890.
 
They were all Finnish-speaking and born in Teurajärvi (parish of Korpilombolo, province of Norrbotten in northern Sweden). Their parents were: Gustaf Bergström (1858-1939) and Karolina Finni (1858-1945).