From the record
“The Harry Keith Barn near Penokee, Kansas was built in 1940. It was listed on the National Register of Historic Places in 2013.”
Wikipedia article Harry Keith Barn, CC BY-SA 4.0.
One of 3 National Register listings published here for Graham County · listed in 2013 · category: Building · built in 1940.
Sources: the Wikipedia article · the National Register database, National Park Service