This study is a revision of an earlier study "Library Organization, Positions and Relationships" prepared in 1969. A new classification plan and job changes required a re-evaluation. There are 51 position descriptions grouped into ten major areas of activity. The description of each activity includes: (1) the function, (2) organization structure and (3) workload. Comments to aid in evaluation of the activity such as background, resources, services, and programs are included. (Author/AB)