http://pec.lib.wvu.edu/record/P192801950Northern West Virginia wage agreements, 1941-1950.<p> Monograph. "Effective March 5, 1950." Includes: Appalachian agreement, 1941; District agreement, 1941; and: National bituminous wage agreement, 1950."</p>Northern West Virginia Coal Association. Collective labor agreements--Coal mining industry--West Virginia.Collective labor agreements--Coal mining industry--Appalachian Region.United Mine Workers of America. District 31.14256