Many in the world of scholarship share the conviction that open access will be the engine of transformation leading to more culture, more research, more discovery, and more solutions to small and big problems. This collection brings together librarians, scholars, practitioners, policymakers, and thinkers to take measure of the open access movement. The editors meld critical essays, research, and case studies to offer an authoritative exploration of the concept of openness in scholarship, with an overview of how it is evolving in the US, Canada, Europe, and Asia; open access publishing, including funding models and the future of library science journals; the state of institutional repositories; Open Educational Resources (OER) at universities and a consortium, in subject areas ranging from literary studies to textbooks; and open science, open data, and a pilot data catalog for raising the visibility of protected data. This landmark collection will help readers understand the open access movement, open data, open educational resources, open knowledge, and the opportunities for an open and transformed world they promise.