From the record
“Calvert House is a historic Late Victorian style house located in Union, Kentucky. It was built in 1875, and on February 6, 1989, it was added to the National Register of Historic Places.”
Wikipedia article B. C. Calvert House, CC BY-SA 4.0.
One of 101 National Register listings published here for Boone County · listed in 1989 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

