From the record
“Fort Union National Monument is a unit of the United States National Park Service located 7.7 miles north of Watrous in Mora County, New Mexico.”
Wikipedia article Fort Union National Monument, CC BY-SA 4.0.
One of 14 National Register listings published here for Mora County · listed in 1966 · category: Site · built in 1956.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service
