Hoover Library: Electronic Books: Free eBooks on the Web

Directory of Open Access eBooks

ARC - Archival Research Catalog - Digital Copies (National Archives)
Bartleby
Full text version of classics of literature, nonfiction, and reference.
BookBoon
Educational, textbooks, business books.
Bookyards
Catalog of U.S. Government Publications
Digital Public Library of America
Terrific collection from libraries across the United States
Feedbooks - Public Domain
Google Books
Available Views:
--Full View = full text (out of copyright or publisher/author's permission)
--Limited Preview = see a limited number of pages (publishers/author's permission)
--Snippet View = basic info & a few sentences to display your search term in context
--No Preview Available = basic info only
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Each book includes an 'About this book' page with basic bibliographic data like title, author, publication date, length and subject. For every book, you'll see links directing you to bookstores where you can buy the book and libraries where you can borrow it.
Hathi Trust Digital Library
Internet Archive eBooks
LibriVox
Free audio books.
National Academies Press (NAP)
The Online Books Page (Univ. of Pennsylvania)
Open Library
Project Gutenburg
Full text version of fiction, non-fiction, and reference works. Large number of works. Does not claim to provide authoritative editions.
Project Gutenburg Partners, Affiliates, and Resources
University of California Press eBooks Collection