The National Commission on Libraries and Information Science held its Mid-Atlantic States Regional Hearing at Philadelphia, Pennsylvania, on May 21, 1975. Oral testimony was given by college, university, public, state, school, county, and special librarians, as well as by publishers, educators, library association officials, interested citizens, and officials of state, federal, and local governments. In responding to the commission's draft reports, witnesses dealt with such topics as national information centers, cooperative programs, the proposed national network, existing networks, financial support for libraries, standards for library and information services, new technology, the relationship between the public and private sectors, the information needs of the American public, the library as a community information center, and the copyright versus copying problem. Witnesses represented the states of Delaware, Maryland, New Jersey, New York, and Pennsylvania, as well as the District of Columbia. (LS)