Try google, using words Elshaug Minnesota
or 411.com for names and addresses
Do you have a name to start with?
Minnesota birth index online 1900 to 1934:http://people.mnhs.org/bci/search.cfm
Minnesota death index online 1908 to 2001:http://people.mnhs.org/dci/
And do a free search at familysearch.org
You can specify Minnesota.
Or post the name of the ancestor you are searching for, and someone here can help you.