ACLS Humanities E-Book Collection This link opens in a new windowACLS Humanities E-Book (HEB) is an online collection of nearly 4,700 books of high quality in the humanities, accessible through institutional and individual subscription. These titles are offered by the ACLS in collaboration with thirty-one learned societies, over 100 contributing publishers, and the Michigan Publishing division at the University of Michigan Library. The result is an online, fully searchable collection of high-quality books in the Humanities, recommended and reviewed by scholars. These are works of major importance that remain vital to both scholars and advanced students, and are frequently cited in the literature.