- U.S. National Cancer Institute
- U.S. Agency for International Development
- Rockefeller Foundation
- Met Life Foundation
- Overbrook Foundation
- Edward John Noble Foundation
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- Philecology Trust
- Rex Foundation
- John D. and Catherine T. MacArthur Foundation
- Nathan Cummings Foundation
- Healing Forest Conservancy
- Gildea Foundation
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- Kathy Gallagher
- Mary R. Kremmerer
- Bruce McCowan
- Mary R. Morgan
- Susannah Schroll
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