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John Phillip Holland was a Irish born teacher who designed and built the first a series of submarines, several of which were purchased and used by various nations in warfare around the turn of the twentieth century. Holland also developed the U.S. Navy's first modern submarine and become known as the Father of the U.S. Submarine Service. This site is basic with a little navigation, but links within the text point visitors to several alternate sites concerning Holland and his submarines, several of which include images, drawings, and primary source materials from newspapers, correspondence, etc.

The Virtual Laboratory is a resource for the history of the human and life sciences (especially psychology) and the "experimentalization of life." In addition to the typical aspects of science and technology, this site adds a dimension dealing with how art intersects these areas. The site is broken into logical sections including, experiments, technology, objects, sites, people, etc. The "people" section contains an extensive collection of career sketches for many important scientists. After each entry, a user can click a link to search the technology database and library for related materials. Other sections offer the same linking capabilities, thereby connecting experiments to concepts to technology to essays and more. This cross-linking makes the large site seem small and easy to navigate. The site archives historical texts and images, as well as new essays. The virtual Laboratory is in English, but much of the archived material is in German.

This site is the online guide to the Niels Bohr Archive. The archive houses thousands of records concerning the famous physicist and the development of quantum physics. Most of the textual primary documents are not available without arranging a visit to the archive; however, a few previously unpublished letters between Bohr and German physicist Heisenberg are available in facsimile, transcribed, and translated. The site's most extensive materials are many pages containing a huge number of images of Bohr, his friends, family, and colleagues. The images are searchable and organized into smaller categories to assist browsing. The site also provides essential information on preparations required before visiting the archive. These procedures seem very particular and restrictive, so the site could be a crucial tool for avoiding delays when planning a research trip. Thus, the site is a valuable resource for any researcher looking for images or working on the history of quantum mechanics, atomic energy, and the life and career of Niels Bohr.

This site chronicles the history of the city of Pittsburg. The site includes a timeline that offers a general overview with brief entries, but the researcher who wants in-depth information can head to the collection of more than 500 full-text books, thousands of images, and hundreds of maps available on the site. The books and images are searchable and the maps are indexed with lists of important landmarks linked to their location on each map. Census records are also available for the mid-nineteenth century.

This site is an on-going project to publish online all of the records of the Griffith Institute Archive concerning Howard Carter's discovery of Tutankhamun's tomb. The site holds a truly incredible number of items, from 5000-plus images and transcriptions of the original cards that indexed the finds, to diaries, maps, and eyewitness accounts of the discovery. The artifacts and note cards can be browsed, or there is a search tool available. The original photographs from the excavation are also online and searchable. Additional features include short bios of Tutankhamun and Howard Carter and a list of publications related to the find that are available through the Griffith Institute. This site would definitely be useful to an anthropologist or an historian of ancient Egypt, but the maps, diaries and accounts could also lend themselves to a very interesting study of the practice and philosophy of archeology, and the history of Carter and other early-Twentieth-Century scientists like him.

This site is truly extensive, covering the history of commercial aviation throughout the world. The site gives brief histories of the beginnings and development of airlines in the United Kingdom, America, and Europe. For those interested in airlines in other parts of the world, the contents also include an exhaustive list of profiles of current and past airlines listed alphabetically, from ABA_Swedish Airlines to ZONDA-Zonas Oeste y Norte de Aerolineas Argentinas. There is also an index of airliners from 1910 with images and stats, and features on London's airports, planes that never made it into production, supersonic transport, and the flying boat. The navigation is simple and information is easy to find.

Airshipsonline exists to provide viewers with access to the archives of the Airship Heritage Trust. The trust was originally established by enthusiasts and relatives of crew members, and continues as an effort to preserve airship history. The site includes a vast array of information relating to all aspects of lighter-than-air technology, especially in the U.K. Uninitiated readers can visit the online reference section to read an elaborate history of airships in general, or individual models. There is also an online discussion forum, dozens of images, and 25 short movie downloads created from original film footage of ships flying, landing, and "on the mast." Designs and flight plans are interesting features of the site as well. The material is not searchable, but a helpful index allows users to jump directly to the information they need, and the site provides an long list of related links with notes.

This site, dedicated to the history of a Turkish aircraft industry, gives a summarized version of the material available in a book by the site's author, an aviation enthusiast who was born in Turkey and grew up in Germany. The site has a very basic design and the navigation is difficult because the pages are labled in many cases by Turkish names and acronyms that are not readily understandable by an english-speaking audiance. Also, each page is not cross-linked, so viewers will have to back-click to the first page before continueing to each following section. But despite the navigational difficulties, the site does offer some interesting information about the Turkish government's interest in aircraft and the partnerships between Turkish groups and foreign manufacturers. The site includes tables that list aircraft licenced for production in Turkey, the years of production, and the actual numbers produced. There are also a few images.

An interactive cartographic history of the relationship between hydrological and hydraulic systems and their impact on the urban development of Rome, Italy from 753 BC to the present day.