Studies, reports, summaries of public meetings, maps, and correspondence received by CHAP concerning the interstate highway construction in Baltimore City. Of particular importance are the Envirinmental Impact Statements and case Reports (in compliance with the National Historic Preservation Act of 1966), both of which are prepared jointly by the United States and Maryland Departments of Transportation. The routes covered include: I-70N, 1-83, 1-95, 1-395, and the Martin Luther King, Jr. Boulevard. These reports were done and collected by CHAP to determine the best course for the new highway construction through historic areas of the city.