Discusses the superiority of vertical filing of maps in compressor-style vertical units over horizontal filing in drawers, emphasizing such factors as physical protection of the collection, ease of filing and retrieval, and efficient use of space. Disadvantages of vertical filing are also reviewed. (Author/JL)

Describes compact disk technology in general and possible library applications, including cataloging, online bibliographic searching, and full text searching, and compares the purchase of optical disk packages to traditional online services. Guidelines are provided for evaluating optical disks which focus on the size of the database, updating…