From the record
“The Mangas Mountain Lookout Complex, on Mangas Mountain near Mangas, New Mexico, was built in 1934. It was listed on the National Register of Historic Places in 1988.”
Wikipedia article Mangas Mountain Lookout Complex, CC BY-SA 4.0.
One of 7 National Register listings published here for Catron County · listed in 1988 · category: Structure · built in 1934.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service