Data were obtained from separate samples of business
enterprises and organizations in each of the 26 cities through a
multistage cluster sample design.
Commercial establishments of all types in the following 26
cities during the following four years. 1972 and 1975: Atlanta,
Georgia, Baltimore, Maryland, Cleveland, Ohio, Dallas, Texas, Denver,
Colorado, Newark, New Jersey, Portland, Oregon, and St. Louis,
Missouri. 1973 and 1975: Chicago, Illinois, Detroit, Michigan, Los
Angeles, California, New York, New York, and Philadelphia,
Pennsylvania. 1974: Boston, Massachusetts, Buffalo, New York,
Cincinnati, Ohio, Houston, Texas, Miami, Florida, Milwaukee,
Wisconsin, Minneapolis, Minnesota, New Orleans, Louisiana, Oakland,
California, Pittsburgh, Pennsylvania, San Diego, California, San
Francisco, California, and Washington, DC.