California Institute of Technology
Access and Use


Access and Use
· Access Policy
· Reproduction & Use Policy
· Information for Visitors
· Fee Schedule
· Grants-In-Aid
· Accessibility

· Archives Account Login



Theodore Roosevelt and James A.B. Scherer at Throop, 1911. Photo ID 20.9-7



Information for Visitors


The Archives Reading Room is open by appointment only.

Please note our current policy concerning visitors to the Caltech campus:

  • Caltech requires all visitors to campus buildings to be fully vaccinated against COVID-19.  We will ask you to show us documentation of your vaccination and booster before admitting you to the building.

  • All staff and visitors are required to wear snug-fitting N95, KN95, or KF94 masks in the Archives and other Caltech Library spaces. If you do not have such a mask, we can provide one.

For research assistance please contact archives[at]


Access to Collections

All patrons may request access to collections by registering for an Archives account.
Non-Caltech affiliated researchers with scheduled appointments will find information about visiting the Archives and the Caltech campus below. Additional information may be obtained from our Information for Visitors (1 page PDF, 108KB). The Archives will on request provide information on housing possibilities on campus and in the Pasadena area, but no endorsements or guarantees are intended for any accommodations.

The Archives' Reading Room Regulations (1 page PDF, 92KB) may be reviewed here prior to visiting.

Contact Information

Fax (626) 395-4073
Telephone (626) 395-2704
U.S. Mail Caltech Archives
Mail Code B215A-74
Pasadena, California 91125



The Archives Reading Room is open by appointment only.

For research assistance please contact archives[at]


Archives Reading Room Hours:
Monday through Friday
8:30 a.m. to 11:45 a.m. and 1 p.m. to 4 p.m.
(early closing on Thursday mornings at 11:00)

We are closed on weekends and major U.S. holidays.

Upcoming holidays:

  • Monday, February 15th 2022 (President's Day)
  • Monday, May 31st 2022 (Memorial Day)
  • Monday, July 5th 2022 (Independence Day)

Caltech Campus Map

A Map of the Caltech Campus is available.



Self-serve paid visitor parking is usually available on campus in Lots 12 and 13 just to the north of the campus, at the corner of Wilson and Del Mar (Pay Station in Lot 12).

Parking map of Caltech

Visitor permits may be purchased at the following rates:

1 hour permit: $3 3 hour permit: $6 All day permit: $9
2 hour permit: $4 4 hour permit: $8 Weekly permit: $27




Parking permits must be displayed in vehicles parked on campus between 7 a.m. and 5 p.m., Monday through Friday. Visitors should park in lots coded for commuter parking only. Some restricted parking is available on adjacent streets.

For more information, please visit the Caltech Parking Service page.

Laptop Computers

Caltech operates a "Caltech guest" wireless network. Off-campus users may connect to this network by following the instructions provided here.

Local information

Researchers might also find useful information about Pasadena area here.

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