From the record
“The Irvington Historic District in Irvington, Kentucky is a 12.6 acres (5.1 ha) historic district which was listed on the National Register of Historic Places in 1998.”
Wikipedia article Irvington Historic District (Irvington, Kentucky), CC BY-SA 4.0.
One of 7 National Register listings published here for Breckinridge County · listed in 1998 · category: District.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service · the Wikipedia article