US Environmental Protection Agency
Epa: The Plain English Guide to the Clean Air Act
This 27-page booklet explains the Clean Air Act using everyday English.
CK-12 Foundation
Ck 12: Earth Science: Air Quality
[Free Registration/Login may be required to access all resource tools.] Presents information on the compounds that pollute the air, their sources, and the regions in which air quality is chronically bad.
US Environmental Protection Agency
Epa: Benefits and Costs of the Clean Air Act, 1970 to 1990
This resource compares the environmental benefits of pollution control to the costs incurred by industry, taxpayers, and consumers.
Siteseen
Siteseen: American Historama: Clean Air Act of 1963, 1970 and 1990
Discussion of the three sets of federal programs to establish air quality goals and to impose pollution control.