The effect of migration on black incomes:  evidence from the 1940 census.
"Evidence from the 1940 [U.S.] census reveals that southern-born blacks who left the region prior to 1935 had higher incomes than non-southern born blacks.  The income gap between migrants and non-migrants declined with schooling."
D001741:Black or African American; D000569:Americas; D003469:Culture; D003710:Demography; D019049:Developed Countries; D004467:Economics; D004522:Educational Status; D004641:Emigration and Immigration; D005006:Ethnicity; D007182:Income; D009656:North America; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D012923:Social Class; D012959:Socioeconomic Factors; D014171:Transients and Migrants; D014481:United States
Americas; Blacks; Cultural Background; Demographic Factors; Developed Countries; Economic Factors; Educational Status; Ethnic Groups; Historical Survey; Income; Migration; Migration, Internal; Nonmigrants; North America; Northern America; Population; Population Characteristics; Population Dynamics; Socioeconomic Factors; Socioeconomic Status; United States