From the record
“The Brow Monument is a monument listed in the National Register of Historic Places for Coconino County, Arizona, United States, located in the Kaibab National Forest. The site contains one of the few remaining survey markers used by the expedition of John Wesley Powell in 1872 It is accessible via the Brow Monument Trail.”
Wikipedia article Brow Monument and Brow Monument Trail, CC BY-SA 4.0.
One of 140 National Register listings published here for Coconino County · listed in 1987 · category: Object.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

