Night Comes to the Cumberlands (1963) is a book by Harry Caudill that brought attention to poverty in Appalachia and is credited with making the Appalachian area a focus of the United States government's " War on Poverty".  In Poverty in the United States: an encyclopedia of history, politics, and policy, the book is described as a "definitive text on poverty in Appalachia among journalists, academics, and government bureaucrats concerned with economic inequality in America." 
- Fowler, Glenn (1 December 1990). "Harry M. Caudill, 68, Who Told of Appalachian Poverty". The New York Times. Retrieved 2 June 2010.
- Ronald D., Eller (2004). Gwendolyn Mink, Alice O'Connor, ed. Poverty in the United States: an encyclopedia of history, politics, and policy, Volume 1. ABC-CLIO. p. 507. ISBN 1-57607-597-4. Retrieved 2 June 2010.