MIT Press Direct to Open (D2O) is a program in which a group of libraries, including Walker Library, commit to purchase ebook collections and the funding is used to make the ebooks open access. Participating libraries are also given access to backfile titles. All Ebooks from MIT Press can also be discovered using the library's catalog or the MIT online platform https://direct.mit.edu/books. To search only open ebooks click here: MIT open ebooks