Founded in 1872, the APHA is the premier organization for Public Health professionals. Publisher of the American Journal of Public Health and the Nation's Health newsletter. Their website contains a lot of useful information, including topic overviews, fact sheets, and policy statements.
Produced by the New York Academy of Medicine, this website provides a collection of grey literature publications in health services research and select urban health topics. **This website is no longer being updated as of January 1, 2017**
Part of the US Department of Health and Human Services, the NIH supports medical research in order to improve health and save lives. Their website provides links to popular resources such as ClinicalTrials.gov and MedlinePlus, as well as health topic highlights, research and training opportunities, and information on grants and funding
Created by a working group at CDC, this website includes images from CDC's pictures. So much of the community health information provided to the public is visual and not as much text based, therefore this image resource is very valuable.