«Population Estimates». U.S. Census Bureau, Population Division. Årlige beregninger av befolkningen fram til 1. juli 2006. Data framlag den 28. juni 2007. Befolkningsendringene er fra 1. juli 2000 til 1. juli 2006.
«Coffeyville History»Arkivert 16. juni 2006 hos Wayback Machine.. City of Coffeyville. Sitat: «Coffeyville was incorporated in March, 1872, but the corporation was found to be illegal and it was again incorporated in March, 1873.»
«Coffeyville History»Arkivert 16. juni 2006 hos Wayback Machine.. City of Coffeyville. Sitat: «Coffeyville was incorporated in March, 1872, but the corporation was found to be illegal and it was again incorporated in March, 1873.»
