From the record
“The Black Hills Central Railroad Co. is a heritage railroad that operates in Keystone, South Dakota, United States. The railroad was added to the National Register of Historic Places on February 5, 2003.”
Wikipedia article Black Hills Central Railroad, CC BY-SA 4.0.
One of 59 National Register listings published here for Pennington County · listed in 2003 · category: District · built in 1890.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service



