The Niels Bohr Library of the Center for History of Physics at the American Institute of Physics (AIP) site features an online catalog, archival finding aids, oral history interview abstracts, and a link to the International Catalog of Sources (ICOS) for History of Physics and Allied Sciences.

Named in honor Emilio Segre, Nobel Laureate for nuclear and high-energy physics, the Emilio Segre Visual Archives contains approximately 25,000 historical photographs, slides, lithographs, engravings, and other visual materials related primarily to American physicists and astronomers of the 20th century. Almost 1,500 of these are currently available online, searchable by name, keyword(s), and...

Over the course of the past eight centuries, Cambridge University has come into the possession of more than a few important documents. Their online digital image collection may be seen as an important first stop for anyone interested in perusing some of these remarkable materials. These documents include The Portsmouth and Macclesfield Collection, which contains the writings and ideas of Sir Isaac...

Part of the University of Pennsylvania Library, the Schoenberg Center for Electronic Text & Image offers a unique collection of chemistry related photographs. The pictures are in three categories and include scientist's portraits, apparatus images, and laboratory images. For example, a link to a 19th century pressure chamber brings up the photograph, information on the people in it, image...

The University of Wisconsin Digital Collections has covered vast territory over the past decade, and doesn't show any signs of slowing up. This rather enticing offering brings together digital versions of publications about scientific research at the University of Wisconsin-Madison as well as unique or valuable titles in science and technology held by the UW libraries. Visitors will enjoy the...

Linus Pauling was one of the most important scientists of the 20th century, and he remains the only person ever to receive two unshared Nobel Prizes: the first was awarded to him for Chemistry (1954) and the other for Peace (1962). He was a man of remarkable talent, who had a vast array of scientific interests, and who always maintained a deep and abiding passion for humankind and its...

Based in Berlin, the Max Planck Institute for the History of Science (MPIWG) was established in 1994 as a research institute administered by the Max Planck Society. The researchers at the MPIWG ask questions that include "How did the fundamental scientific concepts (e.g. number, force, heredity, probability and practices (e.g. experiment, proof, classification) develop in specific historical...

Perhaps the most interesting feature of the Hagstromer Medico-Historical Library is the Introduction. Visitors are treated to a fine prologue that explains the wide benefits and importance of using historical texts to understand the history of science and medicine. After building a foundational knowledge of medical history, visitors can then explore the site's collections. There is the option to...