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This is an online exhibit honoring the 150th anniversary of the birth of William H. Welch. This exhibit features a selection of documents from his papers and access to the recently published Guide to the William H. Welch Collection. The exhibit is built around 200 boxes in the archives. These include correspondence, diaries, manuscripts, photographs, and memorabilia, some of which have been digitized here. Each of the categories of material, including correspondence, notebooks, institutional records and photographs are accompanied by an introductory essay. The site also includes a biography of Dr. Welch.

The National Air and Space Museum is the nation's repository of technological instruments in the fields of aviation and space exploration. The collection of technologies housed at the Museum on the Mall and a soon to be completed hangar near Dulles International Airport. The website includes digital versions of all online exhibits and many past exhibits. The site also includes the on-line only "Commemorations in the Archives" exhibit which includes archival photographs, video and audio files about the breaking of the sound barrier, Charles Lindberg and the Zeppelin. Scholars will find the NASM Archive Division site useful as it has detailed information about collections and access to them.

This site is devoted to the life and times of Dr. John Snow (1813-1858), an important figure in the history of public health, epidemiology and anesthesiology. In addition to biographical material about Snow's life and education, the site provides information about medical advances that resulted from Snow's work such as the scientific understanding of cholera. The site provides, for example, full text articles written by Snow including "On the Mode of Communication of Cholera" (1855) and "On Continuous Molecular Changes" (1853). Notably, the site also provides information about the cultural context in which Snow lived, and in particular about the medical history of mid-nineteenth century London. Scholars looking for both introductory and in-depth information about mid-nineteenth century medicine and the development of the nexus between science and medicine will find this a useful site.

The United States National Library of Medicine is located in Bethesda at the headquarters of the National Institutes of Health. This site lists about 20 exhibits, past and present, that have been displayed at the library and/or have online components. Many of these exhibits are outstanding, providing both scholars in the history of medicine and the general public interested in medical history with an array of images and texts relating to topics such as the study of stress, medieval Islamic medical books, and Frankenstein. The site also has links to other sites on the history of medicine at the NIH, and a list of public (offline) seminars in the history of medicine.

This is the home page for the National Aeronautics and Space Administration's History Office. A brief essay introduces NASA and its history, while a fact sheet (with several photographs) provides a longer description of NASA's projects from the 1950s to the present. Deeper in the site are extensive histories of NASA's (and its predecessor NACA's) activities in air flight, satellites, space probes and manned exploration of space. A long list of NASA personnel, with biographies, adds to the detail of the site, and detailed chronology of NASA's history is also available. In addition, there are dozens of technical diagrams and drawings for the various space craft NASA has built, including the Space Shuttle and the original Mercury capsules. An excellent set of search functions, site maps and topical indices allows visitors to find information on virtually any NASA program or person.

The history section of this site contains: a brief illustrated history of the National Institutes of Health from 1887 to the present, as well as notes on breakthroughs made over the last century at the NIH, a bibliography of materials on the NIH, a short history of the NIH's various branches, and links to other sites on NIH history. The "exhibits" section has 10 online projects, including dozens of photographs of medical instruments and artwork, timelines of research on a variety of diseases and biological experiments, and biographies of important medical researchers and doctors. There is also extensive information about the museum itself, located in Bethesda, Maryland. Visitors can get information about rotating and permanent exhibits, and read a short prospectus of the museum's history.

This site has been established by the National Association of Atomic Veterans to provide an online archive of personal accounts of American veterans who served in divisions that were exposed to the effects of atomic weaponry. There are over 400 personal accounts from those who were there at Hiroshima, Nagasaki and military tests of atomic bombs from 1946 to 1962. There are also over 500 photographs from these servicemen and from declassified military archives. These images include the devastation of the Japanese cities in the immediate aftermath of the bombs and the activities of American servicemen in the testing and clean-up of atmospheric (above-ground) weapons testing. The site is also used to gather information about the subsequent medical effects of exposure to high-level radiation during these military exercises.

Uppsala University, in Sweden, is the oldest university in Scandanavia and a pioneering university in astronomy. This small site provides an overview of the history of the university from the fifteenth century to the present (in both English and Swedish). Included on the site are about 10 images (paintings, photographs and drawings) of the university observatories, listings of university publications from the early to middle twentieth century, a timeline of university professors in astronomy, since its origin, and a manuscript page of lecture notes from the 1480s. There are also links to related materials on astronomy and the scientists involved with the university and its discoveries.

This site is an online catalogue for one of the most famous science museums in Europe, located in Florence. Its collections are mostly from the early modern period (roughly 1500-1800), with a particular emphasis on Galileo, his inventions and related materials from his lifetime. A room-by-room map of the museum allows visitors to view dozens of drawings, paintings and photographs of early astronomical, medical, mathematical, chemical and engineering instruments. There is also a virtual video tour of the Galileo room and accompanying photographs of his telescopes and other memorabilia. The site is written in non-technical bilingual form (English and Italian). Short biographies of important early modern Italian scientists and a multitude of links to other history of science and technology sites in many languages are included.

A project of the Scripps Institution of Oceanography, the site recounts a ten day research trip examining active volcanoes in Costa Rica. In addition to scientific background information concerning the processes of volcanoes and the earth's crust, the site includes a Q&A section, biographies of the researchers, links to a variety of sites with volcanic content, and a daily log of the trip. The log also provides profiles, pictures, and video from the various volcanoes visited. The content ranges from basic cursory explanations of volcanic activity geared toward children to in depth, technical studies for the scientific community.