From the record
“Boshell's Mill is the historic site of a gristmill and sawmill on Lost Creek near Townley in rural Walker County, Alabama. The 4-acre (1.6 ha) site was listed on the National Register of Historic Places in 1975.”
Wikipedia article Boshell's Mill, CC BY-SA 4.0.
One of 8 National Register listings published here for Walker County · listed in 1975 · category: District.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service · the Wikipedia article