- Abell Foundation
- ADP
- AEGON USA Inc.
- Allstate Corporate
- American Express Tax and Business
- Aramark Corp.
- AT&T
- AXA Foundation
- Baltimore Community Foundation
- Bank of America
- Bechtel Foundation
- Becton Dickinson and Company
- Bestfoods
- Black & Decker
- Boeing
- Bristol-Myers
- Charles Schwab & Co. Inc.
- Ciena Corporation
- Cisco Systems
- Coca-Cola Co.
- Constellation Energy Group
- Crown Central Petroleum
- Coca-Cola
- CXS Transportation
- Deloitte & Touche LLP
- Deutsche Bank Americas Foundation
- Enterprise Social Investment
- Ernst & Young Foundation
- Exxon Corporation
- Fannie Mae
- Federated Department Stores
- First Data Corporation
- Freddie Mac
- Gap, Inc.
- General Dynamics
- General Electric
- Guardian Life Insurance Co. of America
- Hershey Foods
- Hewlett-Packard
- Home Depot
- Houghton Mifflin Company
- H&R Block Inc.
- H.J Heinz Co.
- IBM Corporation
- Johnson & Johnson
- JP Morgan Chase
- Kraft Foods
- Lincoln Financial Group
- Lockheed Martin Corporation
- Lucent Technologies
- Massachusetts Mutual Life Ins.
- May Department Stores
- McCormick & Company
- McDonald's Corp.
- M&T Foundation
- Mercantile-Safe Deposit & Trust Co.
- Merrill Lynch & Co.
- Metropolitan Life Foundation
- Microsoft
- Mobil Foundation
- Morgan Stanley Dean Witter
- Nationwide Insurance Foundation
- New England Financial
- NIKE Inc.
- Northrop Grumman
- Northwestern Mutual Life Foundation
- Office Depot
- Pepsi Co. Foundation
- Procter & Gamble Fund
- Prudential Securities
- Revlon Inc.
- Ryland Homes
- Sallie Mae
- Starbucks
- State Farm Companies Foundation
- St. Paul Companies
- Struever Bros.
- Subaru of America
- SunTrust Bank
- T. Rowe Price Associates
- TransAmerica Corp.
- United Parcel Service
- Unilever United States Inc.
- Union Pacific Corp.
- Vanguard Group Inc.
- Verizon
- Walt Disney
- Wells Fargo
- Washington Post
- Yum Brands (Taco Bell, Pizza Hut, KFC)
- Zurich N.A. Foundation