Brief Description Oral history interviews, correspondence, reports, e-mails, memos, budgets, strategic plans, audio and video recordings, and photographs relating to activities of Ziebell, a retired American businessman, as a senior executive at Slavic Gospel Association and other ministries. The material in the collection documents the work of SGA in the Soviet Union, Eastern Europe and other countries; the reorganization of SGA in the late 1980s and early 1990s; Christianity in Russia during the same time...