here are many eLibraries available online, each offering a wide range of digital resources. 

Here  you can explore and learn more:

1. Project Gutenberg: Project Gutenberg offers over 60,000 free eBooks, including many classic literary works, available for download in various formats.

2. Google Books: Google Books provides access to millions of books, including full texts and previews. Users can read books online or download them.

3. Internet Archive: The Internet Archive is a vast digital library that includes not only books but also music, movies, websites, and historical documents.

4. OpenStax: OpenStax is a nonprofit organization that provides free, peer-reviewed, openly licensed textbooks for college and high school courses.

5. HathiTrust Digital Library: HathiTrust is a partnership of academic and research institutions that offers a vast collection of digitized books and other materials.

6. PubMed Central: A digital library of biomedical and life sciences literature, PubMed Central provides access to research articles and journals in the field.

7. JSTOR: JSTOR is a digital library of academic journals, books, and primary source materials in various disciplines, including the humanities, social sciences, and more.

8. Digital Public Library of America (DPLA): DPLA aggregates digital collections from libraries, archives, and museums across the United States, providing access to a wide range of historical and cultural materials.

9. National Library of Australia's Trove: Trove is an online library maintained by the National Library of Australia, offering access to books, journals, newspapers, maps, and more.

10. LibriVox: LibriVox provides free audiobooks of public domain works, with volunteer narrators from around the world.

11. Library of Congress Digital Collections: The Library of Congress offers a variety of digital collections, including historical documents, photographs, maps, and manuscripts.

12. World Digital Library: An initiative by UNESCO, the World Digital Library offers access to cultural and historical materials from libraries and archives around the world.

These are just a few examples, and there are many more eLibraries available, each with its own focus and collection of resources. Many universities and public libraries also offer eLibrary services to their patrons, allowing access to a wide range of digital materials with a library card or institutional login.