The amount and content of library security literature The amount and content of library security literature is traced from its initial appearance in the 1930's until 1983. A look at library electronic security systems focuses on theft-detection systems and their strengths and weaknesses. Also examined are other types of library security systems, such as closed stacks, guards and patrols, tags for library property and equipment, security for cash, and building design. The review of library information and records security addresses computer-based circulation systems, public-access terminals, and personnel records. The article advises that a library should have a security plan, written procedures for implementing it, and inservice training for staff in dealing with security problems. Security plans are briefly discussed for library collections in all formats, library equipment, bibliographic records, personnel records, employee security, patron security, and building access and key policy. A library security-survey checklist is provided.