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The Angell Foundation
The Annie E. Casey Foundation
The Assisi Foundation of Memphis, Inc.
The Atkinson Foundation
The Bainum Family Foundation
The Boston Foundation
The California Endowment
The California Wellness Foundation
The Call Foundation
The CARESTAR Foundation
The C. E. and S. Foundation, Inc.
The Center for Effective Philanthropy
The Center for High Impact Philanthropy
The Chicago Community Trust
The Clare Rose Foundation
The Cleveland Foundation
The Colorado Health Foundation
The Colorado Trust
The Columbus Foundation
The Community Foundation of Greater Des Moines
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Grantmakers for Effective Organizations
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