Before the opening gong. Washington, D.C., March 8. Big three of the Labor Non-partisan League pictured just before the gong sounded to open the Convention of the League in Washington today. About 600 labor leaders of all sections of the country were here for the initial session. In the picture, left to right: John L. Lewis, United Mine President and Chairman of Executive Committee of the League; Sidney Hillman, Secretary, Treasury; and Maj. George L. Berry, President of the League, 3/8/1937