Materials in the Library of Congress (LC) concerned with the topic of privacy and security in computer systems are listed in this "LC Science Tracer Bullet." The guide includes a total of 59 sources: (1) an introductory source; (2) relevant LC subject headings; (3) basic and additional texts; (4) handbooks, encyclopedias, and dictionaries; (5) bibliographies; (6) state-of-the-art reviews and conference proceedings; (7) government publications; (8) indexing and abstracting services for journal articles and reports; (9) journals; (10) representative journal articles; and (11) a government agency to contact for information. Each entry indicates LC location in addition to bibliographical information. Specific texts listed cover the time period l969 to l974; however, information on relevant LC subject headings and indexing and abstracting services subject headings can be used for current searches. (KP)