"Admissions & Orientation (A&O) Handbook." Federal Correctional Institution, Ashland. 1 (1/51). Retrieved on February 1, 2011. "The Federal Correctional Institution of Ashland, Kentucky, is located five miles southwest of Ashland in Summit, Kentucky."
"Station: Ashland, KY". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Retrieved June 4, 2021.
"Level III Ecoregions of Kentucky". National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency. Retrieved June 13, 2015.