For over 70 years, volunteer librarians and archivists have recorded historical and genealogical information for our library. Named for our long-time Harmon Museum curator, Mary W. Klei, our library archives includes materials on the Shakers and Union Village, National Normal University, local churches, court records, photos, atlases, cemetery records, local newspapers, birth, marriage, and death records. The Mary W. Klei Research Library is a wonderful source for researching your family, property or Warren County and Ohio history.

Open Hours: Thursday and Friday (10-4pm)
For the safety of the documents, our historian must be available to assist anyone seeking to do research.

Research by WCHS Staff

Warren County Historical Society staff is available to do research for you for a fee. If you have a research request, please reach out to us through our contact page. ​

Cost
$5 for a preliminary search (you can tell us then if you'd like to continue).
$10/hr for members | $20/hr non-members
25 cents per copy. Shipping fees will vary.

​For email requests:
Visit our contact page or email [email protected] and include "Research" in the subject line.

For snail-mail:
Address the envelope to:
Research Library
Care of: WCHS
105 S. Broadway
Lebanon, OH 45036

For all requests, please include the following:
1. What information you are interested in finding.
2. What pertinent information you already have - names, dates, etc.
3. How much time you would like the WCHS staff to spend researching (there is a one-hour minimum).
4. A daytime telephone number. 
Your request will be added to our research queue and a staff member will contact you with any questions.
Other Research Resources:
​Warren County Research Resources
American Revolution Ancestor Research
Warren County Genealogical Research
Help us improve! If you have questions or additional information regarding the collection, please use our online Contact Form.
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