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This site from NASA contains a brief biography and photograph of the physicist and "father of modern rocket propulsion," Robert Hutchings Goddard. Among the many firsts by Goddard listed, is the first liquid fuel rocket (1926), which led to the development of military missiles and the possibility of space exploration. A link on the liquid fueled rocket leads to several photographs and engineering sketches and an account of its inaugural flight. Statistics (size, employees, locations, funding, milestones) about the NASA center which is named after Goddard are also available.

Alan Turning (1912-1954) was a pioneering mathematician and philosopher of the mind who most famously worked on breaking Nazi codes and presaged developments in artificial intelligence and computer technology. This site conveys Turning's biography, providing a timeline and short prospectus of Turning's life. There is also a scrapbook that includes many photographs of Turning, diagrams of his mathematics and logic, and a large glossary of related historical terms and context.

Contains an account of the life and work of Albrecht Von Haller, with bibliography. Site is entirely in German.

This University of Virginia site uses flow charts to show Alexander Graham Bell's invention process for the telephone in the 1860s and 70s. The flow charts show which breakthroughs occurred when, and which innovations led to subsequent technological advances. Beyond showing Bell's invention process diagrammatically (and showing earlier Bell creations which helped him develop the telephone) the site contains a long essay on the historic invention of the telephone, with notes and references to offline works.