From the Association of Research Libraries:
Sixty scholarly books in the humanities and social sciences have been made freely available to researchers, students, and the general public under the TOME initiative.
The Association of American Universities, Association of Research Libraries, and Association of University Presses launched TOME (Toward an Open Monograph Ecosystem) in 2018 as a five-year pilot project to change the landscape of scholarly book publishing. Under the initiative, 21 colleges and universities have committed to providing grants of $15,000 per monograph, and 66 university presses have agreed to produce digital open-access editions of the books, license them under Creative Commons licenses, and deposit the files in open repositories.
TOME advances the goal of migrating humanities and social science scholarship to the open web, where it can be fully integrated into the larger web-based network of scientific research. The 60 books published under the initiative to date cover a wide range of topics in many disciplines, including architecture, art, history, rhetoric, literary criticism, philosophy, political science, anthropology, ethnic studies, gender studies, media studies, and sociology.
Direct to TOME Website