Public health nursing is a term coined by Lillian Wald of the Henry Street Settlement or community health nursing is a nursing specialty focused on public health. Public health nurses (PHNs) or community health nurses integrate community involvement and knowledge about the entire population with personal, clinical understandings of the health and illness experiences of individuals and families within the population. Public health nursing in the United States traces back to a nurse named Lillian Wald who in 1893, established the Henry Street Settlement in New York City and coined the expression "public health nurse". Public health nurses work within communities and focus on different areas to improve the overall health of the people within that community. Some areas of employment for public health nurses are school districts, county or state health departments, and departments of correction.