Salvation Army, National Administrative Office, Box 269, Alexandria VA 22313, Employment Contact: Apply to local offices for positions. Helps poor and needy with food and shelter.

American Red Cross, 430 17th St., NW 20006. 202-737-8300. Does not accept resumes. Contact any chapter office for employment listings and then apply for specific jobs. Concentrates on disaster relief for earthquakes, floods, tornadoes.

Feeding America, 116 South Michigan Ave., Suite 4, Chicago, IL 60603, 312-263-2303. Mostly donations of food for the needy.

United Jewish Appeal, 99 Park Ave., Suite 300, New York, NY 10016, 212-818-9100. Umbrella agency for 447 groups that help Jews immigrate to Israel.

American Cancer Society, 1599 Clifton Rd NE, Atlanta GA 30329. 404-816-7800. Employment Contact: Human Resources. Funds cancer education, prevention and research.

Catholic Charities USA, 1731 King St. Suite 200, Alexandria, VA 22314. 703-549-1390. Helps catholic charitable causes. The largest private network of social service organizations in the United States works to support families, reduce poverty, and build communities.

YMCA of the USA, 101 North Wacker Dr., Chicago, IL 60606, 312-977-0031. Employment Contact: Associate Director for Human Resources and Cultural Diversity at 312-269-1138. Largest U.S. nonprofit child-care provider. Local YMCAs collectively are the country's largest community service organization, providing values-based experiences that nurture the healthy development of children and teens, support families, and strengthen communities.

American Heart Association, 7272 Greenville Ave., Dallas, TX 75231. Employment Contact: National Staffing Director. Sponsors nutrition research and education and other efforts to combat heart disease.

YWCA, 726 Broadway, New York, NY 10003. 212-614-2700. The YWCA is the largest and oldest women's membership movement in the United States. The mission of the YWCA is to empower women and girls and to eliminate racism. Operating out of thousands of locations in all 50 states, the YWCA of the USA represents more than 2 million women, girls and their families in the United States. Globally, the YWCA represents more than 25 million women throughout 101 countries. The organization gives breast and cervical cancer education to low-income women.

Corporation for Public Broadcasting, 901 E St., NW, Washington DC 20004. 202-879-9600. The Corporation for Public Broadcasting (CPB), a private, nonprofit corporation created by Congress in 1967, promotes non-commercial public telecommunications services (television, radio, online and digital) for the American people. CPB provides financial support and a variety of services to more than 1,000 public television and radio stations nationwide. CPB's support guarantees universal access to public broadcasting's educational services and programming, and ensures that stations can exchange program materials through a national system of interconnection.

Also see Charity Navigator, The Philanthropy 400 and GiveWell for ratings and information on many other non-profit organizations.