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. (2008) Applied Regression Analysis and Generalized Linear Models, Second Edition. Sage.