Chamber of Commerce elects new president. Washington, D.C., May 2. The Chamber of Commerce, concluding the last day of its three-day meet in Washington, wound up with election of new officers. As was expected, James S. Kemper, president of the Lumberman's Mutual Casualty Company, was made president of the board of directors. Here he is in his most business-like pose following the election as he prepared to take over his new duties, 5-2-40