From the record
“Huntley Barn, in Adams County, Idaho, near Cuprum, Idaho, was built in 1902. It was listed on the National Register of Historic Places in 1978.”
Wikipedia article A. O. Huntley Barn, CC BY-SA 4.0.
One of 7 National Register listings published here for Adams County · listed in 1978 · category: Building · built in 1902.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service