From the record
“The Carrisa Lookout Complex, in Lincoln National Forest in or near Long Canyon, New Mexico Long Canyon was built in 1934. It was listed on the National Register of Historic Places in 1988.”
Wikipedia article Carrisa Lookout Complex, CC BY-SA 4.0.
One of 24 National Register listings published here for Otero 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