501(c)(3) organization
type of nonprofit organization in the United States exempt from federal income tax
Media Research Center
Old Greenbelt Theatre
Public Laboratory for Open Technology and Science
Little Traverse Conservancy
American Association of State Highway and Transportation Officials
Gilbert House Children's Museum
A21 Campaign
American Humanist Association
Academy for Educational Development
AHA Foundation
Abiding Truth Ministries
American Society for Psychical Research
Alcohol Justice
Allaire Village
Allen Institute for Brain Science
Alliance for School Choice
America in Bloom
American Academy of Anti-Aging Medicine
American Association of People with Disabilities
American Board of Internal Medicine
American Civil Rights Union
American Forests
American Indian College Fund
American Kidney Fund
American Tinnitus Association
Anderson Japanese Gardens
Annenberg Foundation
Anxiety and Depression Association of America
Art Production Fund
Associated Universities, Inc.
Association of Public Health Laboratories
National Aviation Hall of Fame
Apache Software Foundation
Beverly Historical Society
Big Cat Rescue
Museum of Fine Arts Boston
Black Pine Animal Sanctuary
Blue Letter Bible
Bob Moog Foundation
Bruce Museum of Arts and Science
Burlesque Hall of Fame
California Against Slavery
Carbonfund.org
Cartoonists Rights Network International
Catholic Extension
Catholic Legal Immigration Network
Center for Democracy and Technology
Center for Rural Affairs
The Michael J. Fox Foundation
Chicago Abortion Fund