California Institute of Technology
Welcome to the Caltech Archives


The Caltech Archives
were formally established in 1968 to serve as the collective memory of the California Institute of Technology. Our mission is to preserve and make accessible the institutional records, personal papers, documents, artifacts and pictorial materials that tell the school's history.

The Archives' unique research collections in the history of science and technology range from the time of Copernicus to today. They are available to the campus community for instructional and research purposes, as well as to qualified non-campus users by appointment.

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Images above are from the Caltech Image Archive, an online, searchable database of thousands of images.

In the News

Richard Ellis Oral History online. Richard EllisSteele Professor of Astronomy Richard Ellis joined the faculty at Caltech in 1999, where he served as director of Palomar Observatory/Caltech Optical Observatories, carried out pioneering observations at the W. M. Keck Observatories and Hubble Space Telescope, and was centrally involved in still-ongoing efforts to build the Thirty Meter Telescope (TMT). Read the full interview here. 7-22-2015

Donald Glaser papers received.
Donald Glaser, et al.The Caltech Archives is pleased to announce it has received the papers of Nobel Prize winner Donald Glaser. The papers include Glaser’s work on his award-winning invention of the bubble chamber, which allowed scientists to study subatomic particles.

Donald. A. Glaser, PhD '50 was one of the most innovative and progressive scientists of the 20th century. From his invention of the bubble chamber to his pioneering role in bioengineering and his leading contributions to visual neuroscience, Glaser has advanced many of our most important frontiers of scientific discovery and technological progress.

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Talk of the Archives

The Mars Mariner Media Event

The media frenzy at JPL, July 14, 1965

On July 14 and 15, 1965, the world's attention centered on Mariner 4 when it began transmitting a series of 22 grainy black & white pictures of the Martian surface as it made its closest approach to Mars.

Launched on November 28, 1964, the spacecraft performed the first successful flyby of Mars and gave us the first images ever taken from deep space of another planet—revealing a cold, cratered, moon-like surface, rather than an Earth-like planet as originally assumed would be the case. Learn more LK

Posted 7-13-2015

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