Specialty Archives
These are listed by category:
Academic Presses and Institutions -- Agriculture -- Architecture -- Art and Crafts -- Audio -- Blacks -- Books, Printing, and Publishing -- Children -- Comics and Graphic Novels -- Computing -- Dissertations -- Drama -- Economics --Film, Televison, and Radio -- Folklore -- Historical -- Home Economics -- Literary -- Military -- Music and Dance -- New Original Works -- Philosophy -- Poetry -- Politics, Government, Law -- Portable Reader Editions -- Regional --Religion -- Science, Technology, Social Science and Math -- Science Fiction, Fantasy, Horror -- Serials -- Sports, Games and Recreation -- Textbooks and Instructional Materials -- Women
Academic Presses and Institutions
Some presses and academic institutions have put a substantial number of free online books on their site. They are listed below.
ANU E Press (100+ open access ebooks, with print copies for sale, from the Australian National University)
AU Press (dozens of open access ebooks in English and French, with print copies for sale, from the Athabasca University in Canada)
Bloomsbury Open Content Titles (70+ open access academic books from 2008-2012, 2013, 2014, 2015, and 2016)
Brandeis University Press: institutional repository collection (35+ open access books from their backlist)
CaltechBOOK (50+ open access books from Caltech authors)
Dartmouth Digital Publishing (4 open access journals and 20+ free academic books)
Digital Culture Books (50+ free current and recent titles from the University of Michigan Press)
Directory of Open Access Books (7000+ open access academic books from 190+ publishers; JavaScript required)
Fordham University Press (40+ open access backlist books)
Georgetown University Publications (70+ volumes from Georgetown University Press, many from Georgetown's Round Table on Languages and Linguistics)
Gutenberg-e (36 open access monographs from Columbia University Press and the American Historical Association)
JSTOR Open Access eBooks (60+ titles from various academic publishers, many also available on publisher sites)
MIT Press Open (70+ open access books)
National Academies Press (4000+ free online books in sciences and social sciences)
NYU Press Open Access Books (60+ titles, mostly from the 1990s)
OAPEN Library (2000+ open access books in humanities and social sciences from various European scholarly publishers)
Ohio State University Press Open Access initiative (70+ free online books in humanities and social sciences; additional free OSU Press titles, mixed in with some information on recent in-print books not yet online, are here)
UCL Press (University College London: 30+ free academic books)
University of Adelaide Press (40+ free academic books)
WayneOpen Books (50+ free academic books)
University of Calgary Press Open Access Books (50+ titles)
University of California Press:
Luminos (20+ post-2014 books, released open access upon publication)
eScholarship Editions (700+ free pre-2005 books under "public books" advanced search option)
University of Georgia Press Georgia History Ebooks (49 books on Georgia history, mostly mid-20th century)
University of Ottawa Press Open Access Publications (50+ open access books, in English and French)
University of Pittsburgh Press Digital Editions (700+ free scholarly monographs)
Utah State University Press Publications (100+ free scholarly monographs)
Agriculture
Core Historical Literature of Agriculture (at Cornell)
Historical Publications of the Kansas Agricultural Experiment Station (at Kansas State)
Architecture
US Modernist (modernist architecture magazines of the mid-20th century)
Art and Crafts
Antique Pattern Library (public domain needlework pattern books)
Decorative Arts and Material Culture E-Facsimiles (at Wisconsin)
English Emblem Book Project (at Penn State)
Evenfall Studios Woodworks Library (Woodworking, furniture, and related topics)
Getty Publications Virtual Library (books from the Getty Museum and Institutes)
Guggenheim Publications Archives (exhibition catalogues and other free online books from the Guggenheim Museum)
MetPublications: Titles with full-text online (exhibition catalogues and other free online books from the Metropolitan Museum of Art)
On-Line Digital Archive of Weaving Documents (at Arizona)
Rare Books on Calligraphy and Penmanship (at the Internet Archive via iampeth.com)
Audio
AudioBooksforFree.com (classic and modern MP3 titles, with ads)
LibriVox (hear public domain books read aloud, and contribute your own readings)
PennSound (literary readings)
Project Gutenberg's human-read and machine-generated audio titles
Black Writers and Subjects
North American Slave Narratives (at UNC)
Books, Printing, and Publishing
Digital Books About Books (listing at Oak Knoll)
English Emblem Book Project (at Penn State)
Reading: Harvard Views of Readers, Readership, and Reading History (with hundreds of online books about books and reading)
Children's Literature
Baldwin Library of Historical Children's Literature (~6000 digitized books at University of Florida)
Baldwin Project (~400 classic children's books, 1880-1922)
Bibli's Bookshelf (designed with developmental disabilities in mind; JavaScript required)
Children's Series Books Available Online (index at umkc.edu)
Hockliffe Project (hundreds of early British children's books)
Literature for Children (70+ rare titles, most from late 19th century, at FCLA)
Nineteenth-Century American Children and What They Read (edited by Pat Pflieger)
UCLA Children's Book Collection (1800+ selected books on the Internet Archive)
Comics and Graphic Novels
Digital Comic Museum (public domain comic books; free registration required only for issue downloads)
Computing
Atariarchives.org (classic personal computing books and articles from the 1970s and 1980s)
Classic Computer Magazine Archive (lots of information about 1970s-1990s microcomputers)
FlightSimBooks (books about computer flight simulators)
Free Online Programming Books (from Techtoolblog)
Microsoft eBook Giveaway (300+ titles on Microsoft technologies; not clear if persistent)
Open Books Project (at O'Reilly)
Dissertations and Theses
EThOS: Electronic Theses Online Service (thousands of British theses and dissertations; registration required; payment may be required for digitization of theses not yet in digital form)
Networked Digital Library of Theses and Dissertations (over 1 million free online theses and dissertations, and links to other major thesis sites; managed by Virginia Tech)
Trove Online Theses (over half a million free theses from various sources; at the National Library of Australia)
Drama
19th Century Playtext Database (at Pepperdine)
Historical Database of Folk Play Scripts (compiled by Peter Millington)
Marandet Collection of French Plays (several digitized collections from before 1789 through 1835; at Warwick)
Victorian Plays Project (350+ 19th century play scripts)
Economics
History of Economic Thought Archives (at McMaster)
Humanity Development Library (at Tulane)
International Development Research Centre (free online books selection; in Canada)
Library of Economics and Liberty (at econlib.org)
Film, Television, and Radio
Histoire de la Television (articles and books on early television history, in French and English)
Media History Digital Library (hundreds of books and dozens of magazines from 19th and 20th centuries)
Folklore
Folklore From Indiana University (13,000+ volumes fully viewable online, mostly older)
Historical Database of Folk Play Scripts (compiled by Peter Millington)
Historical
This section includes general or wide-area historical archives and indexes. For sites that focus on a particular country, state, or region, see the regional section.
Antislavery Literature (historic and contemporary slavery narratives and commentary; at eserver.org)
Blue Mountain Project (Historic avant-garde periodicals; at Princeton)
British Library Treasures in Full and Digitised Manuscripts
Center of Military History (historical books and documents by the US Army)
De Re Militari (medieval military history)
Disability History Museum Library (books, images, and other artifacts)
Documents in Military History (300+ historical documents at Hillsdale)
Dumbarton Oaks Online Publications (Byzantine studies, Pre-Columbian Studies, and History of Landscape Architecture)
Early Americas Digital Archive (at Maryland)
eHistory Books (about 20 books, mostly in US history)
ETANA Core Texts (Near Eastern text archive; at Case Western)
Eighteenth Century E-Text (index at Rutgers)
Exploring Ancient World Cultures (at Evansville)
Family History Archives (books and other resources of interest for genealogy; at BYU)
Fourth World Documentation Project (Indigenous studies; at cwis.org)
Historical Text Archive (at Mississippi State)
History of Economic Thought Archives (at McMaster)
History of Gems, Gemology, and Mining Library (at farlang.com)
The Internet Classics Archive (Greek and Roman texts)
Internet Medieval Sourcebook (at Fordham)
Internet Modern History Sourcebook (at Fordham)
LacusCurtius: Into the Roman World (history of ancient Rome: at Chicago)
Libro (Iberian historical resources, at the Univ. of Central Arkansas)
The Luminarium (medieval - 17th century English literature)
Mardos Memorial Library of On-Line Books and Maps (US local histories and genealogical aids)
Memoria Project (Czech history; in Czech and Latin)
Missionary Research Library Pamphlets (3000+ works about various parts of the world, from Columbia)
Nineteenth Century Schoolbooks (at Pitt)
Online Medieval and Classical Library (at omacl.org)
ORB Library (medieval texts)
Perseus Project (classical Greek texts in translation; at Tufts)
Renascence Editions (16th-18th century texts, ed. by Richard Bear)
Samuel J. May Anti-Slavery Collection (thousands of pamphlets at Cornell)
Schulze-Greenleaf Library (250+ 16th-century printed books; at Northwestern)
Victorian Women Writers Project (at Indiana)
Witchcraft Collection (at Cornell)
World Digital Library (digitized heritage materials from all countries)
World War I Document Archive (at BYU)
World War I Pamphlet Collection (at Penn)
Yizkor Books (Holocaust memorial books; at NYPL)
Home Economics
Fons Grewe (cookery and other books at Barcelona; multilingual texts, Spanish interface)
HEARTH (home economics and related disciplines; at Cornell)
Literary
See also historical (for literature from a certain period), and new original works (for web-published literature) and poetry.
For literary criticism, the Internet Public Library's Online Literary Criticism Collection is a good starting point.
The Ape-Man: His Kith and Kin (literary and nonfiction precursors to Tarzan, edited by Georges Dodds)
Australian Literary and Historical Texts (at U-Sydney)
Camelot Project (Arthurian texts; at Rochester)
Colonial Australian Popular Fiction: A Digital Archive (at Melbourne)
Dime Novels and Penny Dreadfuls (at Stanford)
Elizabethan Authors (16th century literature and criticism online)
Hess Collection Sample Dime Novels (at UMN)
In Parentheses (PDF files of world literature; in Canada)
Minor Victorian Poets and Authors (in the UK)
Nickels and Dimes (1800+ dime novels, 1860-1915; at Northern Illinois University)
Online Pulps (index of pulp fiction at pulpgen.com)
Sur La Lune Fairy Tales (folktales from around the world republished, annotated and discussed)
To Be Continued... The Australian Newspaper Fiction Database (serialized literature from Trove)
West Midlands Literary Heritage E-texts (literature by authors from that region)
The Westminster Detective Library (American short detective fiction prior to 1891)
Wright American Fiction, 1851-1875 (at Indiana)
Yellowbacks (19th century British mass-market novels; at Emory)
Military
Air University Press (books on air, space, and the military, most downloadable)
Center of Military History (historical books and documents by the US Army)
De Re Militari (medieval military history)
Documents in Military History (300+ historical documents at Hillsdale)
General Dennis J. Reimer Training and Doctrine Digital Library (army field manuals, etc.)
Napoleonic Literature (including online books on his military campaigns)
Music and Dance
The Choral Public Domain Library (thousands of choral scores)
Historic American Sheet Music (3000+ pieces, 1850-1920: at Duke)
IMSLP Petrucci Music Library (nearly 100,000 scores, plus thousands of recordings; in Canada)
IN Harmony: Sheet Music From Indiana (10,000+ pieces from various Indiana institutions)
Music for the Nation: American Sheet Music, 1820-1860 and 1870-1885 (over 62,000 songs: at LOC)
Mutopia (hundreds of newly formatted scores of classical music, free to reuse)
Sheet Music Consortium (cross-search sheet music collections of 5 institutions; nearly 100,000 records)
New Original Works
These archives have substantial collections of material that has been first published first on the Net, or that appeared on the Web shortly after their original publication. See also Wikipedia's article on the Web fiction, which mentions or indirectly links to a number of sites featuring online writing from amateurs and professionals.
The Assayer (review free titles from various sources)
Coach House Books (poetry and other experimental works, from Canada)
Cyber-Books (unpublished and prepublished; at starry.com)
Electronic Literature Directory (index of works written for the digital medium)
Free Online Novels (hundreds of novels first posted on the web; plus selected vintage fiction; edited by Jennifer Armstrong)
New Free Books (fiction reissues and originals)
Star Thrower Publishing (modern and experimental online literature)
Philosophy
Electronic Resources for Medieval Philosophy Studies: Digitized Books (mostly in Latin and other classical languages; at Boston College)
PhilPapers: Online Research in Philosophy (searches can be filtered to only include free online materials)
Poetry
Aha! Poetry (tanka, haiku, and other forms)
American Verse Project (at Michigan)
Australian Poetry Library (over 700 books and many other poems and readings)
British Women Romantic Poets, 1789-1832 (at UC Davis)
Canadian Poetry (at Western University)
Contemporary American Poetry Archive (at Connecticut College)
Eighteeenth Century Poetry Archive (2000+ works and 200+ profiled authors)
HyperEpos (index of online epic poetry)
Jornal de Poesia (Brazilian poetry)
Light and Dust (modern poetry)
Poetry Foundation Archive (thousands of poems, and poetry-related features)
Poetry in Translation (A. S. Kline's large collection of translations)
Poets' Corner (7000+ poems; edited by Steve Spanoudis)
The Poetry Archives (5000+ poems; at emule.com)
Sonnet Central (sonnets and criticism; edited by Eric Blomquist)
Politics, Government, Law
African Activist Archive (thousands of documents, images, and other materials on 20th century African political activism; at MSU State)
American Radicalism Collection (at MSU)
The Avalon Project at the Yale Law School (historic law-related texts)
CIA Freedom of Information Act Electronic Reading Room (declassified CIA reports, documents, and histories)
Congress.gov (US laws and legislation; see also US Congress Bulk Data Set on Bills)
Congressional Research Service reports: CRSReports.com -- EveryCRSReport
Constitutions of the World Online (1000+ constitutional documents; in Germany)
Council on Foreign Relations reports (250+ publications on US-international issues)
Debs collection of political pamphlets (hundreds digitized from a collection of 2000+ print pamphlets; at Indiana State)
Early American Marxism (covering 1864-1946; at marxisthistory.org)
Fabian Society Online Archive (500+ British tracts, 1884-2000)
Georgetown Law Library digital collections (historic legal dictionaries, law journals, etc.)
Hamlyn Lectures series (law lectures, 1949-recent; in the UK)
International Humanitarian Law: Treaties and Documents (at icrc.org)
Legal Information Institute (index to law text resources; at Cornell)
Lehman Lee Law Library (Chinese laws and commentary)
Marxists.org Internet Archive (at marxists.org)
Online Library of Liberty (1000+ full text books and pamphlets, sponsored by Liberty Fund, Inc.)
OpenCRS (public access to research reports on current political events prepared for the US Congress)
Reason in Revolt: Source Documents of Australian Radicalism (in Australia)
Registry of U.S. Government Publication Digitization Projects (at gpoaccess.gov)
Socialist History Project (primary sources and recent essays on Canadian socialism)
Spunk Library (anarchist and related texts; in the Netherlands)
Trial Pamphlets Collection (contemporary accounts of 17th-19th century US trials; at Cornell)
Portable Reader Editions
Feedbooks (thousands of public domain titles in EPub, Mobi, Kindle, and other formats)
Manybooks.net (over 25,000 titles formatted for PDAs, Kindles, Iphones, and other devices)
Microsoft Reader Free eBooks (for PocketPC and Windows platforms; for-pay books also offered)
PalmPilot E-Text Ring (80+ sites featuring free or for-pay texts formatted for Palm readers)
Qvadis Library (free texts in proprietary Palm format; requires purchase of reader software)
A few sites make many of their titles available in popular formats for portable devices, as well as standard Web formats. Notable sites in this category include the Baen Free Library.
Regional
Books concerning various regions can also be found in general resources in the historical section.
Africa:
General and multinational:
African Activist Archive (thousands of documents, images, and other materials on 20th century African political activism; at MSU State)
Institute for Security Studies publications (on issues of crime and corruption in southern Africa)
South Africa:
Digital Innovation South Africa (50+ online books and other media on the socio-political history of South Africa)
South African History Online (online books and other historical materials)
Asia:
General and multinational:
E-Asia Digital Library (at Oregon)
China:
Lehman Lee Law Library (Chinese laws and commentary)
HKUL Digital initiatives (includes a number of works on Hong Kong history, economy and government)
India:
Archives of Indian Labour (documents on workers in India, 1931-present)
Digital Library of India (500,000+ books, many in Indian languages)
Granth Sanjeevani (rare books and other historic materials, many in Indian languages)
Israel:
National Library of Israel Digital library (texts, images, and other documents on Israel, Jews, and related subjects)
Japan:
National Diet Library Digital Collections (hundreds of thousands of digital documents, mostly in Japanese)
Korea:
National Library of Korea Digitized Materials (books, newspapers, and more; mostly in Korean)
Philippines:
Lumina Pandit II (material related to the Philippines and the University of Santo Tomas)
Europe:
General and multinational:
CARTAH Electronic Text archive (historical texts on eastern Europe)
ECHO: European Cultural Heritage Online (mostly history of science materials)
Europeana (portal for books, images, music, and multimedia from European cultural institutions)
Austria:
ANNO- Austrian Newspapers Online (in German, from Österreichische Nationalbibliothek)
Belgium:
Historic Belgian newspapers online (in French and Dutch, from Belgian Royal Library)
Hungary:
Corvinus Library (Hungarian historical books)
Ireland:
CELT Project (Irish electronic texts)
An Gorta Mor: The Great Hunger Archive (at Quinnipiac)
Poland:
Kujawsko-Pomorska Digital Library (in Poland)
Spain:
United Kingdom:
British History Online (digital library of medieval and modern British history)
Digital Mirror (Welsh and related materials from the National Library of Wales)
Historical Directories (local and trade directories for England and Wales, 1750-1919)
Histories of Scottish Families (from the National Library of Scotland)
Manx Note Book (with full texts on the history of the Isle of Man)
Welsh Journals (450+ journals relating to Wales, in Welsh and English, 1735-2007)
North and Central America:
Canada:
National Library of Canada Electronic Collection (archives texts from or about Canada)
Memorial University of Newfoundland Digital Archives (featuring numerous texts on Newfoundland and Labrador and the maritime provinces)
Our Roots / Nos Racines: Canada's Local Histories Online (in French and English)
Caribbean Area:
Digital Library of the Caribbean (at dloc.com)
Dutch Caribbean Digital Platform (includes both open and restricted-access digital materials, mostly in Dutch)
United States:
General:
1st-Hand-History Foundation (18th and 19th century texts, mostly northwestern US and American Indian history)
Alcohol, Temperance, and Prohibition (US anti-alcohol history, 1800s through 1933; at Brown)
America at War, 1941-1945 (Army Talks and G.I. Roundtable pamphlets; at University of Richmond)
Antislavery Literature (historic and contemporary slavery narratives and commentary; at eserver.org)
Center of Military History (historical books and documents by the US Army)
Chronicling America: Historic American Newspapers (at Library of Congress)
Early American Marxism (covering 1864-1946; at marxisthistory.org)
Historic Government Publications From World War II (at Southern Methodist University)
Historical Newspapers Online (various US newspapers inside and outside the LC collection above)
Immigration to the United States, 1789-1930 (at Harvard)
Library of Congress Digital Collections (historical texts and other media, mostly US-related)
Making of America (mid-19th century American texts)
National Park Service History (at nps.gov)
NewspaperCat: Catalog of Digital Historical Newspapers (from the US and the Caribbean; at the University of Florida)
Samuel J. May Anti-Slavery Collection (thousands of pamphlets at Cornell)
Women Working, 1870-1930 (women in the US economy; at Harvard)
US regions:
South:
Documenting the American South (at UNC)
Online Library of the Southern Campaign of the American Revolution (by John Robertson)
West:
Archives of The West (historical texts supplementing the PBS mini-series)
Library of Western Fur Trade Historical Source Documents (at xmission.com)
US states:
Alabama:
Arizona:
Colorado:
Colorado Historic Newspapers (75+ local papers from 19th-century Colorado)
Connecticut:
Connecticut State Library Digital Collections (photos, books, and other materials from CT history)
Florida:
Florida Heritage Collection (at fcla.edu)
University of Florida Digital Collections (see the "Florida" subsection)
Georgia:
West Georgia Historic Newspapers Archive (6 papers collectively covering 1843-1942)
Hawaii:
Hawaiian Language Newspapers (at hawaii.edu)
Illinois:
Illinois Harvest (at UIUC)
Illinois Digital Archives (digital collections Illinois State Library and other Illinois institutions)
Kansas:
Digital Skyways of the KSGenWeb (genealogical resources)
Kansas Collection (regional historical resources)
Kentucky:
Louisiana:
Mississippi:
Mississippi Digital Library (includes local and civil rights history collections; at usm.edu)
New Jersey:
New Jersey Digital Collections (at NJ State Library)
New York:
Buffalo Full Text (index of online books related to Buffalo, NY and vicinity)
New York State Historical Literature Collection (at Cornell)
North Carolina:
Eastern North Carolina Digital Library (at ecu.edu)
Ohio:
Books on Cleveland Collection (at Case Western)
Oregon:
Historic Oregon Newspapers (at the University of Oregon)
Southern Oregon Digital Archives (at sou.edu)
Tennessee:
Memphis Photo Books (from the early 20th century; at Historic Memphis)
Texas:
Portal to Texas History (at University of North Texas)
Vermont:
Vermont Collection Books and Pamphlets (at Middlebury)
Wyoming:
Oceania:
Australia:
Australian Literary and Historical Texts (at U-Sydney)
Australian Periodical Publications, 1840-1845 (at National Library of Australia)
Colonial Australian Popular Fiction: A Digital Archive (at Melbourne)
Historic Australian Newspapers, 1803-1954 (at National Library of Australia)
New Zealand:
Early New Zealand Books (100+ books about New Zealand published in the 19th century)
New Zealand Electronic Text Centre (full text books and other materials on New Zealand and South Pacific Islands; not all items are open access)
Papers Past (historic newspapers and periodicals from New Zealand, 1839-1920)
South America:
Chile:
Memoria Chilena (Chilean historical books and other materials in Spanish)
Religion
Access to Insight (readings in Therevada Buddhism)
Ahlul Bayt Digital Islamic Library Project (at al-islam.org)
Amazing Facts Library (Seventh-Day Adventist material)
Ars Floreat (spiritual texts in Dutch)
Bahá'i Academics Resource Library (at bahai-library.org)
Bhaktivedanta Book Trust (Hare Krishna, other Eastern religion texts)
Biblioteca Electronica Cristiana (Christian electronic texts in Spanish)
BuddhaNet eBook Library (texts in PDF format)
Catalog of Quaker Writings of the 17th, 18th, and 19th Centuries (online and some print resources; at qhpress.org)
Chabad Lubavitch Books (books on Hasidic Judaism)
Christian Classics Ethereal Library (at Calvin College)
Classical Jewish texts (in Hebrew, in Israel)
Digital Quaker Collection (at Earlham)
Divine Life Society (writings on Hindu religion and philosophy)
Classical Jewish texts (in Hebrew, in Israel)
Dvaita Text Resources (classic Hindu texts in Sanskrit)
Fire and Ice: Puritan and Reformed Writings (edited by Bill Carson)
Holiness Classics Library (Christian books and articles at the Wesley Center)
Internet Sacred Text Archive (various religions)
IntraText Digital Library (5000+ texts on religion and other subjects, multilingual)
Islamic Books Library at alislam.org (Ahmadiyya movement texts)
Judaica collection of Goethe Universitat (7000+ digitized texts, in German and various other languages)
Lollard Society Bibliographies (200+ Lollard-related online books, plus many more citations)
Menasseh Ben Israel collection (17th century printings of Jewish texts; in the Netherlands)
Muggletonian.org.uk (source materials and commentary on the 17th-century English religious movement)
The Online Swedenborgian Library (at swedenborg.org)
Project Canterbury (Anglican history and related texts; at anglicanhistory.org)
Project Wittenberg (Lutheran texts; at ICLnet)
Reading the Vedic Literature in Sanskrit (at Maharishi University)
Restoration Movement texts (at mun.ca)
Saint Pachomius Library (Orthodox and other Christian texts; at voskrese.info)
Secular Web Library (atheist and related literature; at infidels.org)
Still Waters free text archive (new and classic Calvinist texts)
Tertullian Project (ancient and early medieval Christian-related texts)
Theological Commons (75,000+ titles from the Princeton Theological Seminary and elsewhere)
Theosophical University Press (occult books from 19th and 20th centuries)
Theravada Text Archives (new and classic Buddhist texts)
Timeless Treasuries (Tibetan Buddhist literature from the Tsadra Foundation)
Science, Technology, Social Science, and Math
American Institute of Mathematics Approved Textbooks (freely accessible recent college-level textbooks on mathematical topics)
American Natural Science in the First Half of the Nineteenth Century (from Philadelphia's Academy of Natural Sciences)
ArXiv.org e-Print archive (technical papers straight from the labs)
Astronomical Books Online (index in the Netherlands; if site not available yet try this mirror)
Astrophysics Data System Virtual Library (by NASA; at Harvard)
Biblioteca Virtual de CLACSO (social science books in Spanish)
Biodiversity Heritage Library (from the Smithsonian and other institutions)
CABI Publishing Reading Room (full text of life sciences texts from UK publisher)
Les Classiques des Sciences Sociales (French-language social science classics; at U. du Québec)
Computer History Museum Explore Overview (various online primary documents and finding aids)
Distributed Digital Library of Mathematical Monographs (interface to several collections)
Electronic Library of Mathematics (in Germany)
Free Medical Journals (index of 1400+ journals with at least some free online articles)
Historical Math Monographs (multilingual; at Cornell)
Literature and Medicine Database (at NYU)
Mark's Free (Legal) Technical E-Books Links (200+ public domain books on various technologies)
National Academies Press (online science books and summaries)
National Center for Biotechnology Information (online medical books and papers)
Neonatology on the Web: Classic Papers and Books (at neonatology.org)
Northern Prairie Wildlife Research Center (lots of wildlife publications)
Office of Technology Assessment Reports (200+ government reports on scientific and technological issues, 1970s-1990s)
The Virtual Hospital (texts on medical issues)
Science Fiction, Fantasy, Horror
Baen Free Library (free electronic versions of selected Baen SF titles)
eFanzines.com (science fiction fanzines online)
Free Speculative Fiction Online (links to SF stories throughout the Net)
Merril Digital Archives (100+ classic SF titles in Canadian public domain)
Serials
The following are some major directories of open-access serials. See also our own serials listings.
Directory of Open Access Journals (free scientific and scholarly journals)
Electronic Journals Library (green-coded ones are free)
Free Medical Journals (index of 1400+ journals with at least some free online articles)
HathiTrust full text serials (browse 120,000+ free online serials, mostly historic; for searches, you will have to re-select "Serial" in the results)
MHL: Medical Heritage Library (300+ historic medical journal runs, and over 100,000 historic book and journal volumes)
WikiSource: Zeitschriften (list of links to digitized pre-1930 German-language periodicals)
WISE Digital Library (300+ digitized periodicals on fringe science and related topics)
Sport, Games, and Recreation
Amateur Athletic Foundation Digital Archive (sports related journals, magazines, and books)
The Archery Library (old archery books, prints, and articles)
Seagle Electronic Golf Library (from the USGA Museum)
Textbooks and Instructional Materials
College Open Textbooks (listing 500+ open textbooks, with reviews)
Free Textbooks: A Meta Collection (index of 200 free textbooks from various sources)
Open Courseware Consortium (search for free materials for 5000+ courses from 60+ institutions)
Open Textbook Library (80+ openly licensed, complete textbooks for review by faculty; from the University of Minnesota)
Women
A Celebration of Women Writers (local feature)
British Women Romantic Poets, 1789-1832 (at UC Davis)
Collective Biographies of Women (with links to Google books; by Alison Booth)
Emory Women Writers Resource Project (at Emory)
Sophie (work by German-speaking women; at BYU)
Victorian Women Writers Project (at Indiana)
Women Physicians: A Digital Collection (at Drexel)
Women Working, 1870-1930 (at Harvard)