- Victorian Science: An Overview (Victorian Web)
- Robert M. Young Online Archive (e-texts of various publications by the historian of science)
- Science in the Nineteenth-Century Periodical (can search for articles, illustrations, etc. across sixteen periodicals)
- Natural History and Biology in the Nineteenth Century: A Bibliography (U. of Cambridge)
- The Young Man's Book of Amusement (scientific fun for boys; published in 1854)
- The History of Mathematics (Hamilton, Riemann, etc.)
- The History of Phrenology on the Web (biographical data; last updated in 2002)
- ...And Still We Evolve (excerpt on geology; authored by Ian Johnston)
- Astronomy in the 19th Century (National Maritime Museum)
- Starry Messenger (history of astronomy; U. of Cambridge)
- Collected Bibliography for the History and Philosophy of Chemistry (HYLE)
- Foundations of Classical Genetics (PDF files, including facsimiles of some Victorian texts)
- Nineteenth-Century Ether Theory (PDF file)
- Dinosaurs of the Victorian Era (at the Unmuseum)
- Darwin Digital Library of Evolution (the history of natural history)
- The Complete Work of Charles Darwin Online (at U. of Cambridge)
- Darwin Correspondence Project (database w/free search function)
- Darwin and Darwinism (from a seminar at Baruch College)
- Michael Faraday (from the Faraday Museum)
- Michael Faraday (brief biography and links)
- Maria Mitchell's Reminiscences of the Herschels (William and Caroline Herschel)
- James Hutton (brief overview)
- The Huxley File (Thomas Henry Huxley; biography, bibliographies, major themes)
- Charles Lyell, Principles of Geology (facsimile)
- Charles Lyell and Uniformitarianism (Understanding Evolution)
- James Clerk Maxwell (brief biography, links)
- Mary Somerville (brief biography)
- Mary Somerville's "Englished" Mechanism of the Heavens, 2nd ed. (Mary Somerville Project)
- Portraits of Mary Somerville (National Portrait Gallery)
- The Alfred Russell Wallace Page (biography, e-texts, interviews, links)