- Atlas Economic Research Foundation
 - Encouraging independent public policy research by think tanks. - Bradley Foundation, The
- Devoted to strengthening American democratic capitalism and the institutions, principles and, values that sustain and nurture it.
- Russell Sage Foundation
- Devoted exclusively to research in the social sciences.
- Foundation For Child Development
- Dedicated to the principle that all families should have the social and material resources to raise their children to be healthy, educated, and productive members of their communities
- Smith Richardson Foundation
- Offering grants and seeking to help ensure the vitality of our social, economic, and governmental institutions.
- John M. Olin Foundation, Inc.
- Supporting public policy research, law and legal systems, strategic and international studies, and American institutions.
- Stern Family Fund
- Private foundation supporting corporate and government accountability projects in the United States.
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