Moral Integration of American Cities
Angell data frame has 43 rows and 4 columns.
The observations are 43 U. S. cities around 1950.
Angell, R. C. (1951) The moral integration of American Cities. American Journal of Sociology 57 (part 2), 1--140.
Fox, J. (1997) Applied Regression, Linear Models, and Related Methods. Sage.