Open Access in the humanities and social sciences in the United States faces challenges in developing sustainable funding models. Begun in part to disseminate scholarship more widely and in part to solve an immediate budget problem faced by academic librarians, Open Access has evolved to include several ‘flavours’ that involve different funding schemes. Because the humanities and social sciences emphasize books more than STEM disciplines and because publication funding in humanities and social sciences is problematic, it will be necessary for publishers, librarians, faculty, and university administrators to cooperate to find sustainable solutions. This includes consideration of whether open access is always the model that best serves the audiences sought.