Guide to Open Educational Resources (OER): Open Textbooks

Open Textbook Library's books have been reviewed by faculty from a variety of colleges and universities to assess their quality. All textbooks are either used at multiple higher education institutions; or affiliated with an institution, scholarly society, or professional organization. Initiative of the University of Minnesota.

Multi-institutional collaborative venture to develop the next generation of open-access texts.

"High-quality, peer-reviewed, openly licensed college textbooks that are absolutely free online and low cost in print." Initiative of the Rice University.

Open SUNY Textbooks is an open access textbook publishing initiative established by State University of New York libraries.

The BCcampus library includes textbooks developed by Canadian authors as well as other texts that have been borrowed for use by instructors in British Columbia. Initiative from British Columbia.

OER published at a number of colleges and universities including Portland State University, University of Massachusetts, University of Pennsylvania, University of South Florida, the City University of New York, and Utah State University. To find open textbooks, select "textbooks" under "types of works."

Catalog of courses curated from open educational resources (OER) and supported for Washington State University by Lumen Learning.

An OER materials search engine maintained by the California State University.