Charles Babbage Institute
- http://www.cbi.umn.edu/
- CBI is a research center dedicated to promoting the study of the history of computing and its impact on society, and preserving relevant documentation.
Computer History Association of California
- http://www.chac.org/
- Chac is a nonprofit corporation, who safeguards and organizes the history of electronic computing, not only in California, but nationally and internationally. They collect and archive hardware, software and documents.
ICL 1900 Series Computers
- http://www.fcs.eu.com/icl1900/index.html
- Information about the ICL 1900 series mainframes from the 1970s, both hardware and software. The George (1S, 2, 3 and 4) series operating systems, Minimop and Maximop. Programming languages and other information.
The Apollo Guidance Computer Project
- http://hrst.mit.edu/hrs/apollo/public/
- The Apollo Guidance Computer (AGC) was developed to provide reliable real-time control for the Apollo spacecraft that carried US astronauts to the moon, 1969-1972. This site is devoted to documenting the machines, people and institutions that made this possible.