The library has an extensive collection of local genealogy materials available for use in researching your family tree.

Begin your search with  This database gives you access to over 30 billion records and 100 million family trees.  This is the perfect place to start your journey!


Browse our microfilm collection, click here.

Materials available
  • Cemetery records
  • Marriage records
  • Funeral home records
  • Census records
  • Family histories
  • School yearbooks
  • Obituaries
  • De Soto Press Newspaper
  • Jefferson Republic Newspaper
  • The Leader Newspaper

We also have…

  • a collection of photos and DVDs about De Soto and Jefferson County
  • De Soto history books
  • Jefferson County history books
  • Missouri history books
  • Native American history books
  • books about Genealogy

Family Search

With our collection of billions of records, you can piece together your ancestors’ history and bring their stories to life.

HeritageQuest® Online

A comprehensive database of American genealogical sources—rich in unique primary sources, local and family histories, and finding aids. It delivers an essential collection of genealogical and historical sources—with coverage dating back to the 1700s.

Missouri Digital Heritage

Access a rich archive of information about the history of Missouri and local communities.  Included are educational resources like classroom curricula accessible through this website.

Here are some websites that may be useful in your search:

1940 Census – Official 1940 Census website.

Missouri Digital Heritage – Missouri birth and death records database, pre-1910.

rootsweb – Finding our roots together. An community. Search historical Irish newspapers.

Jefferson County Historical Society – preserving the history and rich heritage of Jefferson County for future generations.

JOIN-N Genealogy Resources

JOIN-N Jefferson County Obituaries

Jefferson County Missouri GenWeb – Researchers helping researchers.

Jefferson County History Center

Saint Louis Public Library – Genealogy Room News

Ancestor Hunt – Mormon Church Genealogy Search

Find A Grave 

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