During World War I, a ship owned by one of Louisville’s largest manufacturing firms — C.C. Mengel & Brothers Co. — sailed under sealed orders from British admiralty and was sunk by a German submarine. Why was it sunk? What was its cargo? During this talk, Mark Wetherington, senior research consultant at The Filson Historical Society, will answer these questions while examining the “vital role of international wartime commerce, rapidly changing technology and wartime strategies.”