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Donald J. Lewis joined the University of Michigan as a professor of mathematics in 1961. From 1984-1994 he served as the Department of Mathematics chairman. After retiring, Lewis was named professor emeritus by the Board of Regents in June 2000. Materials include: Correspondence, Department of Mathematics records, Professional Activities, Reports and Studies, and Photographs.

The Donald J. Lewis papers consist of correspondence; departmental material; professional studies and reports on mathematic instruction, careers, and women and minorities in math; and photographs, including one of Lewis at the ground breaking of the addition to West Hall (including Patricia Gurin and Homer Neal). The papers consist of five series: Correspondence, Department of Mathematics, Professional Activities, Reports and Studies, and Photographs.

Mathematician, professor of mathematics at the University of Michigan. Correspondence and other papers relating to professional and family matters, to his association with the Bethlehem Church in Ann Arbor, and to his involvement with the American Mathematical Society, especially regarding the controversy over loyalty oaths in the 1950s; also letters from family members, notably sister Martha, a school teacher, who comments on her career and her life as a single woman; and letters from son Paul during World War II; and photographs.

The papers of T.H. Hildebrandt consist of seven linear feet of materials spanning the years 1887 to 1978. The bulk of the collection falls between the years 1930 and 1960. The papers have been arranged in ten series: Biographical Material, Bethlehem Church, Compositions, Correspondence, Lectures, Notes, Organizations, Universities, Writings, and Visual Materials.

As Hildebrandt was fairly well known in his field, he corresponded with other eminent mathematicians of his time, including Eliakim Hostings Moore (with whom he had studied) and Maurice Frechet. The Hildebrandt papers are also valuable for other topics: the development of mathematical ideas and the various pressures placed on academics during the Cold War to name both two examples.