Caltech does not have a separate and discrete publicly-accessible U.S. government documents collection. Caltech is selective and integrates the material into the overall collection and in recent years puts priority on electronic resources.
For assistance with obtaining government information:
Millions of US Government documents are born digital or being digitized, and links to agencies may lead you to the sources you need.
This list includes depository libraries in the vicinity of the Caltech campus. For more information and other locations, please see the Federal Library Directory.