The authors amass an extraordinary amount of detail in presenting their conclusions as they examine variations by region, business and decade. They consider some of the background developments comparing expanding industries with contracting ones, and new firms with old ones, showing that such factors vary in importance depending on the industry, the time period, and the impact on racial versus gender segregation.

They also provide in depth comparisons of the firms large enough to be covered by federal civil rights laws versus those exempted, and the varying effectiveness of EEOC enforcement against large firms versus oversight of federal contractors. The result provides a wealth of data for anyone interested in either the trajectory of racial and gender equality in the workplace or the effectiveness of enforcement efforts.