Grants are usually for projects, not people. What are you using the grant for? School? Ask at your financial aid office. They should point you to places that they have worked successfully with before. Is it to start a business? Take your business plan to your supporting SCORE Office and see if they might be able to point you into a useful direction. If it's for a philanthropic endeavor you're interested in; find the nearest Foundation Center - Core Collection Best of luck!
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