Enhancing Caltech’s reach and influence by disseminating published research, theses, technical reports, research data and software through the Library’s digital repositories.

The Caltech Collection of Open Digital Archives (CODA) contain Caltech's institutional collections for faculty research publications and other content supporting the mission of the Institute, and is hosted and managed by the Caltech Library.  Its mission is to collect, manage, preserve and provide global access over time to the scholarly output of the Institute, the publications of campus units, and its history. CODA as a whole has been active since 2001. CaltechAUTHORS and CaltechTHESIS are its largest and most dynamic repositories.

The repositories are compliant with the Open Access Initiative-Metadata Harvesting Protocol (OAI-PMH), which makes them visible in “deep web” search engines (e.g. OAIster, D9). In addition to accessing the archives directly from the Caltech CODA website, the major general web search engines (Google Scholar, Scopus, and MSN Search, among others) routinely index the sites.

  • Main Repositories 
    • CaltechAUTHORS is the main repository, holding research publications by Caltech authors. It contains mainly published articles, but also books, book chapters, technical reports, conference papers, patents and more, and is updated continuously as departmental and library staff add available and recently published documents.
      • We encourage self-deposits by Caltech faculty and staff. Basic entries with attached content files are accepted, and library staff enhance the records as needed. A libguide, workshops and direct assistance are also offered through the library.
      • Previously separate technical report collections have been merged into CaltechAUTHORS. Browse the Collections in CaltechAUTHORS to find out more.
    • CaltechTHESIS includes all Caltech theses written since 2002, as well as digitized copies of earlier theses. This collection continues to grow as we add both new and older theses.
    • CaltechCampusPubs contains general publications by Caltech faculty, staff, and students, that are of interest to the campus community as a whole. These include regularly published titles such as the Caltech Catalog (course catalog), the California Tech (student newspaper) and the Big T (yearbook). The repository is updated continuously as departments and library staff add both recently published and digitized older documents.
      • If you are a member of the Caltech community and would like to have your documents added to this repository, please contact the library.
    • CaltechDATA is the newest repository, which stores data created by Caltech researchers and shares their results with the world.  The self-service repository enables researchers to upload research data, link data with their publications, and assign a permanent DOI so that others can reference the data set.  The repository can link with a Github account to automatically preserve software releases.  Find more information about the repository and look at frequently asked questions.  
  • ​​​​​​​Caltech Archives Repositories 
    • The Image Archive consists of more than 10,000 images, and it continues to grow. Original historic and contemporary photographs from Institute life are found here, as are documentary photos of artifacts, fine art, and rare books in our collections. Caltech history photos include most faculty and many staff members, trustees, notable visitors and other affiliated persons, along with buildings, laboratories, events, and student activities.
    • Oral Histories Online was launched in 2002 by the Archives as its first digital project and repository. It brings selected interviews with members of the Caltech community to the public on the web. More than 100 interviews are now available online and more are added regularly.
    • Lab Notes Online provides access to original laboratory notebooks that chronicle some of the greatest milestones in research at Caltech. The first offering is Robert A. Millikan's celebrated oil-drop experiment notebooks which record his attempts to measure the charge of the electron. Other notebooks and historic data sets are in preparation and will be added over time.
  • Caltech Magazines 
    • The Caltech Magazine, (2017+) formerly known as the Engineering & Science magazine (1937-2016), and produced by the Caltech Office of Strategic Communications, presents scientifically literate audience a lively picture of the intellectual life and research activities at Caltech and promotes interest in science and scientific issues. It is published several times a year. Both current and older issues are hosted on the CaltechES repository.
    • ENGenious is a publication for alumni and friends of the Division of Engineering and Applied Science of the California Institute of Technology. Both current and older issues are hosted on the CaltechCampusPubs repository.
  • Caltech-hosted Conferences 
    • CaltechCONF contains papers delivered at several conferences hosted at Caltech. We have merged multiple separate Caltech-hosted conference collections into CaltechCONF. Browse the Conferences in CaltechCONF to find out more.