From the record
“H-T Ranch is a historic ranch complex 10 miles (16 km) west of Amidon, North Dakota. The ranch originally consisted of ten buildings; however, only the ranch house and log barn survive.”
Wikipedia article H-T Ranch, CC BY-SA 4.0.
One of 3 National Register listings published here for Slope County · listed in 1985 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service