Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period.
Agency
Publications Indexes: Created by Federal agencies to identify their
publications. Retrieve bibliographic citations and, when available,
the full-text of the document.
Browse
Topics: Federal Government Web sites organized into subject areas.
Catalog of U.S. Government Publications:
Locate Federal agency publications. Items may be available online, at
at local Federal depository library, or for purchase.
