City-Data. (n.d.). Madisonville, Kentucky (KY 42431) profile: population, maps, real estate, averages, homes, statistics, relocation, travel, jobs, hospitals, schools, crime, moving, houses, news, sex offenders.

Gamblin, K. (2018). Business, Life, and Bourbon: RP Drake of Madisonville, Kentucky (Doctoral dissertation, The Florida State University).

US Census Bureau. (n.d.). U.S. Census Bureau QuickFacts: Madisonville city, Kentucky. Census Bureau QuickFacts.

World Population Review. (n.d.). Madisonville, Kentucky population 2022 (demographics, maps, graphs).