Campus Location: Building 43
Sunday: Closed
Monday: Closed
Tuesday: Closed
Wednesday: Closed
Thursday: Closed
Friday: Closed
Saturday: Closed
Hours Notes: After 5pm on weekdays and all day on weekends/holidays, you must show a Caltech ID, Caltech Library Borrower's Card, Caltech Library Guest Reader's Card, JPL badge, or Caltech Alumni Association ID card for access. After midnight, you must have a valid Caltech ID. For students interested in study space outside of the Library’s hours, please contact your Option Admin about access to your academic buildings.

Print Collection

  • Applied Sciences
  • Biology
  • Chemistry
  • Computer Science
  • Engineering
  • Mathematics
  • Physics


  • Reference Services
  • e-Device Checkout: Kindles, Laptops, Cameras
  • Group Study Rooms
  • PCs 
  • Color Printers/Scanners/Copiers
  • Flatbed Scanners
  • Course Reserves
  • DocuServe: Document Delivery & InterLibrary Loan
  • General Registration 
  • Microfilm Reader 
  • Reading Room
  • Quiet Study area and carrels