The University of Minnesota has provided an online database of peer-reviewed, open textbooks. The textbooks are reviewed by instructors at UMinn at other universities. Open textbooks are complete textbooks released under a Creative Commons, or similar, license.
Instructors can customize open textbooks to fit their course needs by remixing, editing, and adding their own content. Students can access free digital versions or purchase low-cost print copies of open textbooks. There are 18 business textbooks, two accounting and finance textbooks, and fifteen math and statistics textbooks in the collection. The database is at https://open.umn.edu/opentextbooks . For more information, see the press release at http://blog.lib.umn.edu/pam/it/2012/05/open-textbook-c.html.