This study examines data reflecting the actual impact during the first 3 years of use of the second edition of the Anglo American Cataloging Rules (AACR2) in one library, and compares them with a 5-year projection done in 1980. Findings showed the impact was close to the projection. (Author/EM)

Originally written in the 1950s, this article addresses the question of subdividing and grouping entries under a given author as a main entry that paved the way for the American Library Association's Catalog Code Revision of 1967. It also includes referee responses by Elaine Svenonius, Allyson Carlyle, and Michael Carpenter. (LRW)