- Betty Mittleman - Silence is Golden and the Warsaw Ghetto Series (1)
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- Birds of America Folio (439)
- Bisbila University High School Yearbook (43)
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- Botanical Images from the University of Minnesota Libraries Collections (1370)
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- Burroughs Corporation Records (748)
- Burton Rudolph Papers (2)
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- C. P. Pesek Collection (29)
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- Campus Maps and Blueprints (561)
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- Carpatho-Rusin American Collection (4)
- Carver Land Grant Papers (26)
