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Although they give a comprehensive, rich picture of more than 200 years of African American struggle and achievement, they represent only a rivulet of the collections the Library of Congress holds in this essential part of American history.

eft to themselves, people tend to sort themselves

out into communities of like-minded neighbors.

None of this should be surprising. Individuals and groups of all sorts have always differed from one another in many ways, throughout centuries of history and in countries around the world. L

NORC at the University of Chicago.

Looking at the 40-year history of the GSS