Girls Educational and Mentoring Services (GEMS)
http://www.gems-girls.org/
New York, New York

Standing Against Global Exploitation (The SAGE Project)
http://www.sagesf.org/
San Francisco, California

Polaris Project
http://www.polarisproject.org/
Washington, D.C.

Prostitution Research and Education
http://www.prostitutionresearch.com/