The papers consist of manuscripts, notes, lectures, photographs, and miscellanea documenting the professional career of Michael I. Rostovtzeff, an archaeologist, professor of ancient history, and director of archaeological studies at Yale University, 1914-1952. Manuscripts and notes contain drafts and research data for Rostovtzeff's major literary works; photographs detail many antiquities and artifacts related to ancient history; lectures contain several papers on archaeological and historical topics, including the Dura Europos excavations in Syria.