Federal Sources
Grants.Gov (http://www.grants.gov) - allows organizations to electronically find and apply for competitive grant opportunities from all Federal grant-making agencies. Grants.gov is the single access point for over 900 grant programs offered by the 26 Federal grant-making agencies.
Federal Register Online (http://www.gpoaccess.gov/fr/index.html) - Daily Government Printing Office publication containing recently announced federal programs
Catalog of Federal and Domestic Assistance (http://www.cfda.gov/) - CFDA Directory of all federal grant programs
National Science Foundation - http://www.nsf.gov/
Department of Education - http://www.ed.gov/
National Institute of Mental Health - http://www.NIMH.nih.gov/
Department of Health and Human Services - http://www.os.dhhs.gov/
United States Department of Agriculture - http://www.usda.gov/
National Endowment for the Arts - http://www.arts.endow.gov/
National Endowment for the Humanities - http://www.neh.gov/