- Reason Foundation, Los Angeles (www.reason.org)
- Goldwater Institute, Arizona (https://goldwaterinstitute.org/)
- Young America's Foundation (https://www.yaf.org/)
- Bag the Ban! (www.bagtheban.com)
And books on how liberals are silencing free speech:
1. The Silencing: How the left is killing free speech, by Kirsten Powers
2. The Intimidation Game: How the left is silencing free speech, by Kimberley Strassel.
3. Stonewalled: My Fight for Truth, by Sharyl Attkisson.