John S. & James L. Knight Foundation
David and Lucile Packard Foundation
California Community Foundation
Charles Stewart Mott Foundation
Ewing Marion Kauffman Foundation
Houston Endowment Inc.
Plough Foundation
S.H. Cowell Foundation
William and Flora Hewlett Foundation
The Meadows Foundation
Eugene and Agnes E. Meyer Foundation
The Spencer Foundation
Kansas Health Foundation
The Annie E. Casey Foundation
W.J. & D. K. O'Neill Foundation
Geraldine R. Dodge Foundation
Wenner-Gren Foundation
Walter & Duncan Gordon Foundation
Beldon Fund
Crohn's and Colitis Foundation
United Methodist Health Ministry Fund
Mitsubishi Electric America Foundation
Fan Fox and Leslie R. Samuels Foundation
Altman Foundation
Jewish Fund for Justice
The Dyson Foundation
The Hyams Foundation, Inc.
Winthrop Rockefeller Foundation
The Edward W. Hazen Foundation
Charles and Helen Schwab Foundation
Gaylord and Dorothy Donnelley Foundation
The John A. Hartford Foundation
Burroughs Wellcome Fund
American Legacy Foundation
The Duke Endowment
The Women's Foundation of California
The Ontario Trillium Foundation
The Muttart Foundation
Marguerite Casey Foundation
The California Wellness Foundation
The James Irvine Foundation
The McKnight Foundation
Rasmuson Foundation
Winston-Salem Foundation
Sisters of Charity Foundation of Cleveland
Jack Kent Cooke Foundation
Alaska Conservation Foundation
KnowledgeWorks Foundation
The Goizueta Foundation