A mathematical model was used to consider alternative request routing policies for use in the Illinois Library and Information Network. Given data on interlibrary loan demands, the probability of request success, processing and delivery times for various libraries, and a network request routing policy, the model predicted the probability of…

Brief summaries are provided of 17 library projects being conducted in Illinois during 1974. These deal with the following matters: 1) the development of the Illinois State Library; 2) library manpower training; 3) library research; 4) the Illinois State Library Materials Processing Center; 5) the professional development of library personnel; 6)…