IAGenWeb State Census Project - Lyon County the goal of this project is to IAGenWeb and publish online, all State of Iowa (Non-Federal) censuses for free public genealogical research
Iowa Graves Survey - Lyon County 1930s graves registration survey
Iowa Gravestone Photo Project - Lyon County search gravestone photos indexed by county submitted by volunteers
Lyon Co. Genealogy Forum read and post messages about your ancestors for this county
Lyon County, IA Genweb Project a collection of online resources for genealogy researchers
Lyon County Message Board read and post messages with other genealogy researchers of this county
The Tombstone Transcription Project - cemeteries for Lyon Co. IA
US GenWeb Archives for Lyon County cemeteries, newspapers, wills, military rosters etc recorded online
WWII Honor List of Dead and Missing

Additional Resources

Iowa Obituary Search enter your ancestor's name to search the world's largest newspaper obituary archive; over 3 Billion newspaper articles
Iowa Birth Records
Iowa Marriage Records
Iowa Divorce Records
Iowa Death Records