The Mason OER Metafinder earches seventeen databases of Open Educational Resources in real-time, instantly returning the top several hundred or so relevant hits from each site. Databases searched include American Memory Project, Applied Math and Science Education Repository (AMSER), BC Campus Open Ed, College Open Textbooks, Digital Public Library of America, Directory of Open Access Books (DOAB), HathiTrust, MERLOT, MIT OpenCourseware, New York Public Library Digital Collections, OAOpen.org, OER Commons, OERs at Internet Archive, Open Textbook Library, OpenStax, Project Gutenberg, and World Digital Library.