From the record
“The Fort McKavett State Historic Site is a former United States Army installation located in Menard County, Texas. The fort was first established in 1852 as part of a line of forts in Texas intended to protect migrants traveling to California.”
Wikipedia article Fort McKavett State Historic Site, CC BY-SA 4.0.
One of 2 National Register listings published here for Menard County · listed in 1971 · category: District.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service