Olmsted County, MN Genweb Project a collection of online resources for genealogy researchers
Olmsted County, MN Genealogy Forum read and post messages about your ancestors for this county
Olmsted County, Minnesota 1883 List of Pensioners on the Roll
Olmsted County Message Board read and post messages with other genealogy researchers of this county
Olmsted County History Centre several searchable indexes here
Olmsted Co. Haverhill 1870 Census
The Tombstone Transcription Project - cemeteries for Olmsted Co. MN
US GenWeb Archives for Olmsted County cemeteries, newspapers, wills, military rosters etc recorded online
World War II Honor List of Dead and Missing Personnel, Olmsted County

Additional Resources

Minnesota Newspaper Search enter your ancestor's name to instantly search the world's largest newspaper archive; over 12 million newspaper pages
Minnesota Birth Records
Minnesota Marriage Records
Minnesota Divorce Records
Minnesota Death Records