http://pec.lib.wvu.edu/record/P105871901To the coal mine operators of Virginia & West Virginia.Event invitation. Invitation extended by: "J.A. Springer, President District No. 17, United Mine Workers of America, Flemington W. Va., Clark Johnson, Secretary District No. 17, United Mine Workers of America, Montgomery, W. Va."Springer, J. A.Johnson, Clark.Coal miners--West Virginia.United Mine Workers of America.Coal mines and mining--Virginia.Industrial relations--Virginia.Industrial relations--West Virginia.Coal mines and mining--West Virginia.Coal miners--Virginia.14256