This collection contains sales slips, paychecks, and worker time cards and other documents including some land leases from Adair County coal mines and companies including Baiotto Coal Company, Inc., Billy Creek Coal Mine, Blacksmith Coal Corporation, Corrigan Coal Company, Kansas City Midland Coal & Mining Company, Orek Coal Company, Rose Hill Coal Mine and Simler Bluff Coal Mine, as well as the Adair County Coal Operators Association.