Open Illinois: OER developed in Illinois. You can find content that has been posted. You can also develop and post OER content. Contact the Roosevelt Library for more information.
Openstax: OER resources. Many have existing test banks, answer guides, PowerPoint slides, and can be integrated into Blackboard.
Libretexts: Textbooks that can be used in classrooms. Some have ancillaries that were created; including some created by Roosevelt instructors.