http://pec.lib.wvu.edu/record/P77451930Tariff on oil and its effect on American-produced coal : speech of Hon Henry D. Hatfield of West Virginia in the senate of the United States, Friday, February 28, 1930.Government document. Reprinted from: <em>Congressional Record</em>, seventy-first Congress, Second Session, 1930:Feb.28.<br />Hatfield, Henry Drury, 1875-1962.Tariff on petroleum products--United States--Speeches in Congress.Coal trade--United States--Speeches in Congress.14256