Leigh Hallingby holds a BA in political science from Wellesley College, a Master’s in Social Work (MSW) from the University of Pennsylvania, and an MS in Library Service from Columbia University. She has been working as a special librarian since 1979, setting up and managing 5 new libraries for 5 non-profit organizations: Sexuality Information and Education Council of the U.S. (SIECUS), National Center for Children in Poverty at Columbia University’s School of Public Health, National Center on Addiction and Substance Abuse (CASA), Drug Policy Alliance, and Open Society Foundations (OSF). She has been at OSF since 1995. Leigh also served as the Psychology Librarian at Columbia University for 2 years. Leigh has been active with the Association of Population/Family Planning Libraries and Information Centers (APLIC), Substance Abuse Librarians and Information Specialists (SALIS), and Special Libraries Association (SLA).