Mary Helen (also known as Coalgood[3]) is an unincorporated community in Harlan County, Kentucky, United States.
References
- ^ United States Postal Service. "USPS - Look Up a ZIP Code". Retrieved April 9, 2017.
- ^ U.S. Geological Survey Geographic Names Information System: Mary Helen, Kentucky
- ^ Rennick, Robert M. (August 28, 2013). Kentucky Place Names. University Press of Kentucky. ISBN 9780813144016.