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- [2] NORTH OF SLAVERY - THE NEGRO IN THE FREE STATES, 1790-1860 - LITWACK,LF AMERICAN HISTORICAL REVIEW, 1962, 67 (02): : 438 - 439
- [4] NORTH OF SLAVERY - THE NEGRO IN THE FREE STATES, 1790-1860 - LITWACK,LF ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1962, 339 (JAN): : 195 - 196
- [5] NORTH OF SLAVERY - THE NEGRO IN THE FREE STATES, 1790-1860 - LITWACK,LF JOURNAL OF NEGRO EDUCATION, 1962, 31 (02): : 155 - 155
- [6] The Free Negro in North Carolina, 1790-1860 JOURNAL OF NEGRO EDUCATION, 1944, 13 (01): : 70 - 72
- [8] The Free Negro in North Carolina, 1790-1860 ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1943, 229 : 211 - 212