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HathiTrust Digital Library

A partnership of academic & research institutions, offering a collection of millions of titles digitized from libraries around the world.

What is HathiTrust?


The HathiTrust (pronounced 'hah-tee') houses a collection of over 15 million volumes of searchable books, journals, and government documents, including 5.8 million available as full text online.

HathiTrust is a partnership of over 100 libraries and research institutions that have come together to build and share a digital repository of print works.  Begun in 2008, the goal of the partnership is to build a comprehensive archive of published literature from around the world available in the public domain through a digital library. The HathiTrust has pursued this goal chiefly by digitizing materials like books and journals from major library collections and other partners, such as Google, the Internet Archive, and Microsoft. Central Washington University joined in 2020.

Currently Digitized

  • 17,268,597 total volumes
  • 8,346,422 book titles
  • 464,109 serial titles
  • 6,044,008,950 pages
  • 774 terabytes
  • 204 miles
  • 14,031 tons
  • 6,673,593 volumes(~39% of total) in the public domain

Relevant HathiTrust Pages

HathiTrust Missions and Goals


The mission of HathiTrust is to contribute to research, scholarship, and the common good by collaboratively collecting, organizing, preserving, communicating, and sharing the record of human knowledge. More specifically HathiTrust is organized to:

  • To build a reliable and increasingly comprehensive co-owned and co-managed digital archive of library materials converted from the print collections of the member institutions.
  • To dramatically improve access to these materials in ways that, first and foremost, meet the needs of the co-owning institutions, with a particular emphasis on ensuring access for individuals with print disabilities.
  • To develop cost-effective and robust infrastructure for digital content of value to scholars and researchers, including a variety of formats and born-digital materials.
  • To develop partnerships and services that ensure preservation of the materials in HathiTrust and the entire print and digital scholarly record.
  • To reduce long-term capital and operating costs of storage and care of print collections through redoubled efforts to coordinate shared storage strategies among libraries.
  • To build infrastructure that facilitates cost-effective and productive collaborations among partnering institutions to reduce the cost of securing campus intellectual assets.
  • To define and make available a set of services that supports research using the HathiTrust corpus.
  • To create a technical framework that allows for both central and distributed creation of tools and services.
  • To sustain the HathiTrust enterprise as a “public good” while at the same time defining a set of services that benefits member institutions. 

Adapted from HathiTrust Digital Libraries.