Three problems in the field of library science concerning the education of reference librarians which this project attempted to solve were: (1) unsatisfactory teaching methods, (2) variation of education and skill among students and (3) lack of self-instructional materials. The development and testing of computer-assisted instructional materials has contributed to the solution of these problems by making available: (1) a type of education in which reference situations are simulated, (2) an instructional period to evaluate discrimination and performance and (3) easily revised self-instructional materials. The purpose of these materials is to help the library science students at the master's level become acquainted with a wide spectrum of representative reference materials and to learn to use these in meeting the informational needs of the library patrons. To accomplish these objectives, 167 reference work annotations and 850 questions dealing with these tools were compiled and organized into a linear program. Reference interviews in libraries were monitored and recorded for use as simulated case studies. In these situations, the computer acts as the patron and the student as the librarian. The group using the computer scored significantly higher on examinations than did another control group which did not use the computer. (MF)