Reference > General Reference
General Knowledge
Stack Exchange
The Straight Dope (Archive)
Libraries / Education etc.
Open Culture
Open Library
HathiTrust Digital Library
Europeana
Digital Public Library of America
The Magazine Rack – Internet Archive
Science
Biodiversity Heritage Library
iNaturalist
Encyclopedia of Life
GBIF — Global Biodiversity Information Facility
Computers / Internet
Wayback Machine
Archive Today
Ask Leo
Is It Down Right Now? – Website Checker
D.I.Y
ManualsLib
The Manual Library – Internet Archive
Instructables
iFixit
Low-tech Magazine
Useful
Get Human – Contact Customer Service
Have I Been Pwned
Reference > Public Domain
Internet Archive
National Archives
Library of Congress – Digital Collections
Smithsonian – Open Access
Prelinger Archives
NASA Image and Video Library
U.S. Fish and Wildlife Service- National Digital Library
U.S. Geological Survey – Library Photographic Collection
Project Gutenberg
The Public Domain Review
“Public domain” collections are not always 100% public domain. Check the rights statement on the specific item before reuse.
Reference > U.S. Government > U.S. Government Resources
Federal Register
USA.gov
Data.gov
Congress.gov
Congressional Research Service Reports
Govinfo.gov – U.S. Government Publishing Office
USGS Publications Warehouse
Medline Plus
Pub Med
National Library of Medicine
U.S. Bureau of Labor Statistics
U.S. Census Bureau
USA Spending.gov
National Oceanic and Atmospheric Administration
FRASER – Federal Reserve Economic History
FRED – Economic Data
EDGAR – Search Electronic Filings
Founders Online
Reference > U.S. Government > Freedom of Information Act
Freedom of Information Act
WHS (DOD) – FOIA Reading Room
CIA – FOIA Reading Room
FBI Records – The Vault
USDS – FOIA Reading Room
NSA/CSS – FOIA Reading Room
Homeland Security – FOIA Library
Office of Information Policy – FOIA
NASA – FOIA E-Libraries
U.S. Government Open Data