From the record
“The Hudspeth County Courthouse is located in the town of Sierra Blanca, the seat of Hudspeth County in the U.S. state of Texas. The courthouse was constructed in 1919 and added to the National Register of Historic Places in 1975.”
Wikipedia article Hudspeth County Courthouse, CC BY-SA 4.0.
One of 1 National Register listings published here for Hudspeth County · listed in 1975 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service