From the record
“Winona Ranger Station Historic District is a historic ranger station and national historic district located in Mark Twain National Forest near Winona, Shannon County, Missouri. The district encompasses four contributing buildings, associated with a ranger station constructed by the Civilian Conservation Corps (CCC) under the supervision of a Works Progress Administration (WPA) project.”
Wikipedia article Winona Ranger Station Historic District, CC BY-SA 4.0.
One of 8 National Register listings published here for Shannon County · listed in 2003 · category: District · built in 1938.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service