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Gwil Evans Photographic Collection, 1930-1968 (P 082) 83
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Chester E. Corry papers, 1947-1989 78
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Lord & Schryver landscape architectural records, 1929-1970 69
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Agricultural Experiment Station Records, 1889-2002 (RG 025) 65
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President's Office Records, 1870-2002 (RG 013) 58
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Summer Session Records, 1913-2018 (RG 270) 58
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Latino Roots collection 55
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Webfoots and Bunchgrassers: Folk Art of the Oregon Country 54
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College of Science Records, 1932-1973 (RG 024) 46
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Print Collection 44
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Colver family papers, circa 1860-1888 31
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Office of the Dean of Personnel Administration. National Japanese American Student Relocation Council Records 28
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Office of the President Records, Johnson-Hawk (1968-69) 25
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Siletz News (MSS SiletzNews) 20
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Barbara Fealy Landscape Architect records, 1966-1993 15
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Intercollegiate Athletics Records, 1908-2013 (RG 007) 15
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Underground Newspapers (PUB 013-3) 14
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Oregon State University Cultural Centers Oral History Collection, 2013-2014 (OH 21) 13
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Robert D. Clark Papers 13
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John C. Ainsworth papers, 1858-1911 12