HathiTrust has a wealth of scanned U.S. federal government documents available. Government documents are generally not subject to copyright law, so they have been a focus of the scanning efforts by the various contributing organizations.
Federal Documents in HathiTrust as of September 1, 2020:
HathiTrust is also creating a comprehensive U.S. Government Documents Registry. When finished, this registry will have bibliographic information about every government document published, whether or not it's present in HathiTrust.
For more information on government documents available at Auburn, please go to the subject guide Government Information.
Not all U.S. federal government documents are available for full view on HathiTrust. Some have legitimate copyright issues, but others have been incorrectly cataloged. You can click the feedback button on the document's record (visible below) to suggest the item be opened up for full view. Review of the document will take some time, so it probably won't be opened right away.