The John Fox, Jr. Genealogical Library, named in honor of John Fox, Jr. one of Kentucky's most famous authors who was born in Bourbon County, Kentucky, is located on the ground floor of the Duncan Tavern Historic Center. The Library is staffed solely by volunteers.
The library was first established in what was then called the Ardery Room, now the Founders’ Room, on the first floor of Duncan Tavern. The formal dedication of the library was held on October 24, 1950 at its present location on the ground floor, with historians and dignitaries, and members of lineage societies in attendance. The Fox family generously donated many personal items used by John Fox, Jr. including his writing desk; his sisters were also present for the ceremony. Over 350 people attended the dedication.
Through the years the library has grown. Two more rooms, a second reading room and a periodical reading room were added as additions were made to the Duncan Tavern Historic Center over the years. The shelves hold an impressive collection of history and genealogy books. Also there are vertical family files and numerous family histories in book form, as well as maps and county and state histories focusing on Bourbon County families and Revolutionary War patriots. Most Kentucky counties are represented in either vertical files or books. The collection also includes the complete set of KSDAR Genealogical Records Reports.