Access and Use
· Access Policy
· Reproduction & Use Policy
· Information for Visitors
· Fee Schedule
· Archives Account Login
Max Delbruck with cigar and cup of coffee.
Photo by Ross Madden from Black Star, February 1949. Photo ID 1.3.1-6
Members of the Caltech community have access to the Archives during regular work hours. Other qualified researchers are welcome to submit requests for research appointments and for reproduction of archival materials. Students and some researchers may be requested to supply letters of reference from an advisor or employer.
All patrons are required to register online one time and then to submit requests through our online system. Account information must be updated annually.
Create an Archives account or log in to your existing account
Users with an active Caltech affiliation may use access.caltech credentials for quick autentication.
With an Archives account, patrons can manage and review requests, download materials electronically, and schedule appointments. Patrons can also send requests for materials directly from our collection guides at the Online Archives of California (OAC). Archives staff will review requests and respond as promptly as possible.
General inquiries or questions about access may still be submitted by e-mail, telephone, or mail, using the information given below or in the Contact menu.
More information regarding access and visiting is on our Information for Visitors page.
Mail Code 015A-74
Pasadena, California 91125
Archives Reading Room Hours:
Monday through Friday
8:30 a.m. to 11:45 a.m. and 1 p.m. to 4 p.m.
We are closed on weekends and major U.S. holidays.
- Wednesday, December 25th 2013- Wednesday, January 1st 2014 (Christmas-New Year Holidays)
- Monday, January 20th 2014 (Martin Luther King Day)
- Monday, February 17th 2014 (President's Day)
- Monday, May 26th 2014 (Memorial Day)