From the record
“Sycamore Ranger Station, also known as Sycamore Work Center and as Sycamore Administrative Site, in Prescott National Forest near Camp Verde, Arizona was built in 1940 by the Civilian Conservation Corps. It was listed on the National Register of Historic Places in 1993 for its architecture, which includes vernacular, national(?), and other styles.”
Wikipedia article Sycamore Ranger Station, CC BY-SA 4.0.
One of 127 National Register listings published here for Yavapai County · listed in 1993 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service