The purpose of the 25th anniversary volume of this yearbook is to reflect on past accomplishments and consider the future as it relates to educational technology and media development. This volume continues to provide information to help media and technology professionals practice their craft in a changing, expanding field. It is divided into seven sections. Part 1 focuses on trends and issues and includes articles on doctoral dissertation research in educational technology, development programs for college faculty, network information discovery and retrieval of educational materials, tools for automating instructional design, benefits of information technology, the E-rate resource guide, Internet relay chat, information literacy, radios in the classroom, and building and maintaining digital reference services. Part 2 covers technology centers and institutes for learning, and part 3 focuses on school library media. Part 4 presents a leadership profile of six significant figures in the profession: Wesley Joseph McJulien, Stanley A. Huffman, Jr., John C. Belland, Robert M. Diamond, Paul Robert Wendt, and Don Carl Smellie. Part 5 includes information on professional organizations and associations in North America, and part 6 describes U.S. graduate programs in instructional technology. Part 7 is a mediagraphy of print and nonprint resources published in 1998 or early 1999. Contains an index. (AEF)