Guidestar (UMich Only)

Database of 1.5 million non-profit organizations in the United States, including 10,000 foundations
Covers arts, the environment, communities, and health services
Searchable by organization name, subject, place, and category
To search for grant-providing foundations, use the IRS code: 501(c)(3)
Provides purpose of the organization, program reports and considerable financial information, including 990 reports from the mid-1990s (lobbying expenditures are on Line 85 of IRS form 990)
The Guidestar public version is searchable but only provides the address and phone number