ENCORE (plus) , a breast and cervical cancer outreach, education, and screening referral program, was implemented by the YWCA of the United States and funded by Avon's Breast Cancer Awareness Crusade. ENCORE (plus) was designed to address the educational and access needs of low socioeconomic status and minority women who experience substantial barriers to breast and cervical cancer screening. This article describes the dissemination of ENCORE (plus) to 78 YWCAs in 30 states. It illustrates the application of social cognitive theory and diffusion theory to increase program adoption, implementation, and maintenance among community organizations that have not traditionally provided public health related services. The article highlights elements of the program that enhanced its adoption and implementation and describes procedures for accelerating the diffusion of the program across the country.