The fields of library and information science are changing and growing rapidly. Forty years ago, libraries were about books, journals, magazines, and newspapers. Information science, computing, and telecommunications were in their infancies. Today, libraries bring together people and all forms of information. Libraries make information content from various sources available online as well as in print. Many libraries lend videotapes, DVDs, and other media. Public librarians are creating community resources. Corporate librarians are developing knowledge management systems and business intelligence units. Academic librarians are providing valuable instruction to students in information finding, evaluation, and use, as well as expert research to ensure the latest and most reliable information for research and public service programs.

Librarians, information technologists, and information scientists are collaborating to transform inert archives into dynamic digital resources for learning, study, and enjoyment. This collaboration is also working to preserve historical archives for the use of future generations. At the same time, librarians and information professionals are providing value-added online and personal services to customers and clients.

The second edition of the Encyclopedia of Library and Information Science (ELIS) updates the first edition, which achieved status as an outstanding reference work. This edition is a compilation of diverse topics representing the digital world in which we live. Topics include database design, intellectual property, user services, and the Internet. Entries also cover the activities of selected national and academic libraries, as well as library and information professional associations.

The online version of ELIS is a dynamic database of full-text articles that include numerous new topics as well as updates of critical articles from the first edition. Through quarterly updates, future online coverage will address all types of libraries and information organizations, as well as content documenting the further evolution of digital libraries and learning resources. In addition, articles will describe exciting practices and applications of information technology.

The talents of numerous people made this work possible. I thank the Editorial Board, especially Maurice Line and Mary Lee Kennedy, who provided recommendations and valuable suggestions. I greatly appreciate Carolyn Hall's patience, support, and suggestions, and the hard work and dedication of Susan Lee, who made my job easier. My deep gratitude goes to my friend Guy St. Clair for his constant support.

Miriam A. Drake