From the record
“The 7-D School, in Las Animas County, Colorado, near Branson, Colorado, was built during 1936-37 as a Works Progress Administration project. It was listed on the National Register of Historic Places in 2009.”
Wikipedia article 7-D School, CC BY-SA 4.0.
One of 26 National Register listings published here for Las Animas County · listed in 2009 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service