Selected for their influence on the field, their continued reference over the years, and the reputations of the authors, 17 seminal works on educational technology have been gathered together to form this valuable collection. These previously published articles have contributed to the conceptual underpinnings of the field and are widely used in educational technology courses. However, they are sometimes difficult to locate. This publication solves the problem, providing a single source for the works. Divided into four sections, Definition and Conceptual Background, Design and Development Functions, Delivery Options, and The Profession, the work also lists classic books in the field with annotations.