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- ebrary, Inc✖[remove]4,188
- National Academy of Sciences (U.S.)39
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- University of North Carolina at Chapel Hill. Library6
- Annenberg Public Policy Center5
- Emerson, Jason, 1975-5
- Ferrell, Robert H.5
- Hayes, Kevin J.5
- Horne, Gerald5
- Koerner, E. F. K.5
- McDonald, Lynn5
- Nightingale, Florence, 1820-19105
- University of North Carolina at Chapel Hill. Documenting the American South (Project)5
- Williams, Frank J.5
- Burlingame, Michael, 1941-4
- Cox, Patrick L., 1952-4
- Hargittai, István4
- Helicon (Firm)4
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- Thoreau, Henry David, 1817-18624