From the record
“The Valmora Sanatorium Historic District, near Watrous, New Mexico, includes building(s) dating from 1910. It was listed as a historic district on the National Register of Historic Places in 1995.”
Wikipedia article Valmora Sanatorium Historic District, CC BY-SA 4.0.
One of 14 National Register listings published here for Mora County · listed in 1995 · category: District · built in 1910, Pueblo Revival Style architecture.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service