Aetna Foundation, Inc.
The Alcoa Foundation
Ameriprise Financial
ARAG Group
Automatic Data Processing, Inc.
Aviva Charitable Foundation
Ball Corp.
BankAmerica Foundation
The Boeing Co.
BP Foundation, Inc.
Bristol-Myers Squibb Foundation
Butler Manufacturing Co.
Caterpillar Foundation
ChevronTexaco
Chubb & Son Inc.
CIGNA Foundation
ConocoPhillips
The Dow Chemical Co.
Eaton Corp.
Ecolab Foundation
Farm Bureau Mutual Insurance Co.
Farmers Mutual Hail Insurance Co.
First Data Resources
Gannett Foundation
GuideOne Insurance
Guthrie County State Bank
Hormel Foods Corp.
IBM International Foundation
IDEX Corporation
Illinois Tool Works Foundation

ING
Insurance Services Office, Inc.
Johnson & Johnson Family of Companies
Eli Lilly & Co. Foundation
3M Foundation
Mercedes Benz of North America
Merck Pharmaceuticals
Meredith Corp.
MidAmerican Energy Co.
Midland National Life Insurance Co.
Mutual of Omaha Insurance Co.
Nationwide Foundation
Northwestern Mutual Life
Pella Rolscreen Foundation
Pioneer Hi-Bred International, Inc.
The Principal Financial Group Foundation, Inc.
Procter & Gamble Co.
Quad/Graphics
R. J. Reynolds Foundation
Scripps Howard Foundation
State Farm Companies Foundation
Time Warner Foundation, Inc.
Toro Company
UBS Financial Services, Inc.
Wellmark Blue Cross/Blue Shield of Iowa
Wells Fargo & Co.
Wells Fargo Foundation
The Xerox Foundation