This discussion of the use of authority control to ensure consistency of headings in machine-readable and card catalogs highlights the basic concepts and rationale of authority control and library catalogs, and efforts of the Library of Congress and bibliographic utilities. Six references and causes of name variations are appended. (EJS)

Describes online catalog research being conducted in Europe in the areas of interaction and interface design, subject access, functional improvement through the application of information retrieval techniques, and library networks. Three operational online catalogs, not available outside Europe, are discussed. (30 references) (CLB)

This essay focuses on use of the Library of Congress Subject Headings system in online catalogs for the retrieval of information by subject. Among the topics addressed are differences among catalog forms (card, microform, and computer); user interface with different forms of catalog; the types of subject indexes employed in present online…

The project presented here explored the possibility of using computer-based systems to increase information access to non-text children's materials at the pre-school through elementary (6th grade) school levels. This final report includes an indicative summary as well as ten separate papers that describe a range of applications of proven computer…