From the record
“Chilton County Airport, also known as Gragg-Wade Field, is a public-use airport in Chilton County, Alabama, United States. It is located one nautical mile (2 km) east of the central business district of Clanton, Alabama.”
Wikipedia article Chilton County Airport, CC BY-SA 4.0.
One of 3 National Register listings published here for Chilton County · listed in 2004 · category: District.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service