Buchan's Domestic Medicine An on-line transcription of William Buchan's 1785 home medical guide for the treatment and prevention of disease in the 18th century. http://www.americanrevolution.org/

Germ Theory Calendar A time line of all speculation on and experiments pertaining to the germ theory of disease beginning in 50 BC and going to 1900. http://www.germtheorycalendar.com/

The Public Health Museum in Massachusetts Extensive exhibit information and photographs about public health in Massachusetts. http://www.publichealthmuseum.org/

U.S. Department of Health and Human Services Historical highlights. http://www.hhs.gov/