the University of Kentucky Libraries Special Collections Research Center (SCRC) should be your first stop for Kentucky-specific primary sources.
SCRC collects, preserves, and provides access to materials documenting the social, cultural, economic, and political history of the Commonwealth of Kentucky.
Special Collections Research Center is home to UK Libraries' collection of rare books, Kentuckiana, the Archives, the Louie B. Nunn Center for Oral History, the King Library Press, the Bert T. Combs Appalachian Collection, the John G. Heyburn II Initiative for Excellence in the Federal Judiciary, and the Wendell H. Ford Public Policy Research Center.
Here is a list of tools to find some of the SCRC's materials.
Additional Kentucky-specific resources include: