This historical image, which depicted workers creating a billboard in Columbus, Georgia, showing one of the communication modes, the billboard, used to promote public health awareness, in this case, polio vaccinations within a community. This campaign was produced by the former U.S. Department of Health, Education and Welfare's (HEW), Public Health Service (PHS), Bureau State Services (BSS), and what was the Communicable Disease Center (CDC), in cooperation with the Georgia Department of Public Health and the Muscogee Health Department. The billboard, as well as television, magazines, and pamphlets, are only some of the myriad of modalities implemented when information of this kind is disseminated throughout society, and across cultural barriers.