Research Guides: U.S. Government: Archived Federal Websites & Data

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This page serves as a starting point to help users navigate changes made to federal government websites and data portals since the 2025 presidential transition. Included are archived data and website sources that can be used to find information removed from or made unavailable on federal government websites due to the administrative transition or compliance with presidential executive orders. This page is not an exhaustive list of sources.

For information on executive orders and other presidential actions, see the Executive Branch page of this guide.

Other data sources can be found through the topic-specific pages of this guide or on NJ State Library's many other subject-specific research guides.

If you need assistance finding federal government information, please contact our Reference Desk at refdesk@njstatelib.org.

Archived Federal Websites

Wayback Machine - Internet Archive
Internet Archive's Wayback Machine enables users to search URLs to find past instances of websites that have been archived. Users can also search/browse archived collections such as the End of Term 2024 collection.
End of Term Web Archive
The End of Term Web Archive captures and saves U.S. Government websites at the end of presidential administrations. The EOT has thus far preserved websites from administration changes in 2008, 2012, 2016, and 2020. They are currently in the process of completing the End of Term 2024 Web Archive.
Biden's WhiteHouse.gov Archive - NARA
The official files that make up a Presidential administration's website are preserved in the National Archives’ Executive Office of the President Electronic Records Archive. In order for the public to easily access the websites, the National Archives has taken an additional step to "freeze" the websites and make them available online.
Public Environmental Data Partners
A coalition of organizations committed to preserving and providing public access to federal environmental data. Provides links to access federal environmental tools, like the Climate and Economic Justice Screening tool, that have been removed or are at risk of being removed.

Archived Federal Data

Data.gov Archive - Harvard Library Innovation Lab
A 16 TB collection of over 311,000 datasets harvested during 2014 and 2025,a complete archive of federal public datasets linked by data.gov.
IPUMS
IPUMS includes data produced by a broad range of agencies, including the Census Bureau, the Bureau of Labor Statistics, the National Science Foundation, the National Center for Health Statistics, the Centers for Disease Control, and the National Aeronautics and Space Administration. IPUMS integration and documentation makes it easy to study change, conduct comparative research, merge information across data types, and analyze individuals within family and community context. Data and services are available free of charge.
openICPSR
A service of the Inter-university Consortium for Political and Social Research (ICPSR), openICPSR is a self-publishing repository for social, behavioral, and health sciences research data. ICPSR has a long commitment to safekeeping and disseminating US government and other social science data. Examples of available datasets include the Youth Risk Behavior Surveillance System (YRBSS) 2023-2025 and Pregnancy Risk Assessment Monitoring System (PRAMS) MCH Indicators 2016-2022 . Datasets in openICPSR are accessible without a ICPSR membership.

Federal Data Archiving Initiatives

Climate Mirror Project
Climate Mirror is a distributed effort conducted by volunteers, in conjunction with efforts from institutions such as University of Pennsylvania, University of Toronto, and the Internet Archive, to mirror and back up U.S. Federal Climate Data.
Data Rescue Project
Serves as a clearinghouse for data rescue-related efforts and data access points for public US governmental data that are currently at risk. Website includes guidance on data archiving tools and a data archiving tracker.
Environmental Data & Governance Initiative (EDGI)
EDGI is a research collaborative and network that monitors federal environmental websites and preserves access to environmental data. One of their projects is the Federal Environmental Web Tracker.

Other Research Guides and Tools

2025 Presidential Transition - GODORT
Research Guide produced by ALA's Government Document Round Table with information about changes to access to government information stemming from the 2025 presidential transition.
Finding Government Information during the 2025 Administration Transition - University of Minnesota Libraries
Research guide that points to resources and news about accessing federal government information. It also provides links to groups performing data and website rescue and archiving.
US Government Information: Weekly Roundup - UC San Diego Library
Research guide, published by Kelly Smith of UC San Diego Library, containing recent releases of federal documents and information. Recent Roundups include updates to web content changes. A Weekly Roundup Archive is also available.

Federal Data Preservation Webinars

February 13, 2025 - Federal data is disappearing. Meet the teams working to rescue it and learn how you can help.

Hosted by MuckRockNews. Presenters: Mark Graham of the Internet Archive; Sarah Cohen of Big Local News; Jack Cushman of the Harvard Law School Library Innovation Lab; and Lynda Kellam, PhD, Secretary of IASSIST, a member organization of the Data Rescue Project.

March 19, 2025 - The Right to Know: Protecting and Expanding Access to Public Records (FOIA)

Hosted by GODORT. Part of the Help! I'm an Accidental Government Information Librarian series. Presenters: Dr. David Cuillier, Brechner Center for Freedom of Information, Dr. Frank LoMonte, a legal expert, and Dr. Kenneth Evans, Rice University’s Baker Institute for Public Policy.

U.S. Government

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Archived Federal Websites

Archived Federal Data

Federal Data Archiving Initiatives

Other Research Guides and Tools

Federal Data Preservation Webinars

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