Textbooks, Books

• BCcampus
• Creative Commons for Educators and Librarians
• Directory of Open Access Books
• eCampus Ontario
• Milne Open Textbooks
• OASIS
• OpenStax
• Open Textbook Library
• Pressbooks Directory

Journals, Academic Resources

• Arxiv
• BASE - Academic Search Engine
• Digital Commons Network
• DOAJ - The Directory of Open Access Journals
• eThOS: eThesis Online Service
• Open Access Theses and Dissertations (OATD)
• The Public Library of Science

Business Case Studies

• MIT Sloan School of Management
• Open Access Business Case Studie
• Open Access Teaching Case Journal
• USC Annenberg
  • Strategic Communication

Online Teaching and Learning Materials

• Khan Academy
  • Close-captioned videos
• MERLOT
• MIT OpenCourseWare
• OER Commons 
• Open Yale Courses
• Open Learning Initiative

Videos

• Ted Talks
• Vimeo
  • Not all videos are closed-captioned or in the Creative Commons, but can be found using filters
• YouTube
  • Use filters to select Creative Commons

Art

• Brooklyn Museum (Creative Commons licence on images in which the Museum owns the copyright)
• J. P. Getty Museum (Come Creative Commons licensed pages and Open Content policy on images in which the Museum owns the copyright)
• Met Museum (Look for images with a OSCA license)
• National Gallery of Art (US) (Images of public domain paintings and sculpture)

Cartoons

• xkcd 

Images

• Anatomy Image Bank
• Creative Commons Image Search Engine
  • Enter a search query and click on where you want to search, such as "Flickr" or "Pixabay"
• Flickr Creative Commons
• Historical Images
  • UBC Library Digitization Centre
  • Library of Congress
  • The British Library
  • The National Archives UK
  • The U.S. National Archives
  • National Library of Ireland on The Commons
  • New York Public Library
• Library and Archives Canada
• Pexels (CC0 license)

Music

• International Music Score Library Project (IMSLP)
  • Musical scores in the public domain in Canada
• MusOpen

Odds and Ends

• The Public Domain Review
• Project Gutenberg