"Facts you should know about coal and coke in West Virginia : important data in regard to the production and selling price of coal and coke in West Virginia from 1897 to 1923, inclusive."; "Clark and Krebs (Firm)"; "Coal mines and mining--West Virginia--Statistics.", "Coke industry--West Virginia--Statistics."; "Clark and Krebs (Firm)"; "[1924?]"; "Leaflet. \"Compiled from Reports of the Chief of Department of Mines of West Virginia, by Clark & Krebs, Inc. File no. 9001.\"
"; ""; "P8557"; "pec"; "Coke industry--West Virginia--Statistics.", "Coal mines and mining--West Virginia--Statistics."; "14256"; .