112 sections of the labor market. To the South the proportions of Blacks and whites were reversed, and there was not sufficient white labor to fill the semi-skilled and skilled positions so, to a greater degree than occurred in Baltimore, Blacks often did. Whatever the case - and more comparative research is necessary to solve the problem — the form that the racial-ethnic division of labor took in Baltimore had a striking effect on the region's working class. A final point: It might be objected that the above argument that all whites, male and female, U.S. or foreign-born, were pan of a single racialized division of labor ignores differences between immigrant European nationalities. The objection would have some merit. While statistics on occupational distribution of specific white ethnicities are hard to come bjr', it is clear that Polish men, for example, and to a slightly lesser extent Italian and Lithuanian men, were concentrated at the lower rungs of the employment ladder and disproportionally shared the laboring-rank jobs with Black men. However, narrative evidence also indicates that job segregation for these ethnicities was not as severe as that of Blacks and that it eroded quickly, often by the second generation. More research needs to be done to understand the differentials between European ethnicities within the white division of labor. The fact of the matter is, though, that these differentials were within the same division of labor; there is no evidence of differentials between white ethnicities in Baltimore in 1930 on the order of those between whites and Blacks. Workplace Struggle, Trade Unions, and Working-Class Traditions The contradictions of the capitalistic social division of labor are most directly expressed in struggles based in the workplace, and the main institutional forms of these struggles are trade unions. The working class of Baltimore at the onset of the Great Depression had a trade-union movement that reflected both the