About Us

Close up on metallic letters that say "Della Lang Room Genealogy"

Della Lang Local History & Genealogy Room

At the Della Lang Local History & Genealogy Room, an experienced staff provides services to a full range of patrons, from beginners to experienced researchers. 

We're located at the Northwest Branch of Jefferson County Library, 5680 State Road PP, High Ridge, MO 63049

Because of the collection’s size and continuous growth, the information in this description is brief. Specific titles can be identified in the library’s online catalog.  

Interlibrary Loan

Interlibrary loan may be available to borrow books, microfilm, and other materials from other libraries with a valid Jefferson County Library card.  Although some libraries, including Jefferson County Library, will not loan genealogical materials, copies of an index or a few pages can often be obtained for a nominal fee.   

When You Visit

Preparing in advance will make your research trip more productive. 

Please call in advance to verify that the department is staffed on the day of your visit. 

If you have any questions, email Ginger, or call 636-677-8186. 

Research Requests

Branch staff can perform a search of up to five names in any indexed genealogy materials held by the Northwest Branch for a $10 non-refundable fee.  

This fee, which must be paid at the time of the request, includes the cost of copies and postage.  

Make check payable to Jefferson County Library. 


We welcome donations to the genealogy department. We accept donations of publications, family histories, photos and other items of genealogical merit. Contributions are a tangible and meaningful way to support the department, ensuring its tradition of excellence for the benefit of the community. Restrictions on size and shape do apply.  

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The Northwest Branch is an Affiliate Library with FamilySearch.org!
Affiliate libraries have access to FamilySearch’s digital genealogical collections that are otherwise accessible only through a FamilySearch family history center. FamilySearch also provides its affiliates with the latest tools and tips for genealogy reference librarians.