INTENDED AS A REFERENCE GUIDE FOR A PROCEDURE OR COMPLETE SYSTEMS ANALYSIS, THE MANUAL PROVIDES A STEP-BY-STEP GUIDE TO INVENTORY PROCEDURES AND ELECTRONIC SECURITY SYSTEMS AND REVIEWS SPECIAL COLLECTIONS SECURITY REQUIREMENTS AND ALTERNATE PROTECTIVE MEASURES. SECTIONS ARE ALSO PROVIDED ON DETERMINING WHETHER THEFT PREVENTION MEASURES ARE NECESSARY AND FINANCING SUCH NEEDS ASSESSMENT. DIAGRAMS AND PHOTOGRAPHS ILLUSTRATE A TEXTUAL DESCRIPTION OF THE NATURE AND FUNCTION OF ELECTRONIC LIBRARY SECURITY DEVICES AVAILABLE FROM VARIOUS MANUFACTURERS. A LIST OF PUBLIC, UNIVERSITY AND COLLEGE, SPECIAL, AND HIGH SCHOOL LIBRARIES USING THE CHECKPOINT MARK II SECURITY SYSTEM IS APPENDED. A BIBLIOGRAPHY IS PROVIDED. TABULAR DATA ARE INCLUDED. (KBL)