Over 70% of Audubon County's early settlers were from Denmark, Germany, or Ireland. What follows are some resources that may help you in researching or learning about your ethnic background.
| Dansk Staten Arkiver | Danish State Archives (English version) |
| Arkivalieronline | Contains images of original Danish parish register and census record pages from the 1700's thru 1925. (Danish State Archives Site - in Danish) Access is free, but you must register for a userid via the "Ny bruger" button. You will receive your userid and password via email. Contact the Audubon County Coordinator if you need further help. |
| Danish Immigrant Museum | located in Elk Horn, Iowa |
| Danish Demographic Database | One of Family Tree Magazines 101 Best Web Sites, 2008 |
| Cyndi's List: Germany | |
| Central European WorldGenWeb | includes Denmark and regions of Germany |
| Genuki | United Kingdom and Ireland |
| National Archives of Ireland | digitizing the 1901 and 1911 censuses |