Hartford Medical Society http://library.uchc.edu/hms/
The Society provides an excellent medical library of historical significance and sponsors the Menczer Museum of Medicine and Dentistry in conjunction with the Hartford Dental Society.
INHOEP http://users.unimi.it/~netprev/inhoep.htm
The International Network for the History of Occupational and Environmental Prevention, who deal with occupational health and the history of medicine.
International Network for the History of Hospitals http://www.cf.ac.uk/hisar/people/kw/inhh2.html
The Network exists to promote studies related to the historical evolution of hospitals from their beginnings to the present day by providing an international forum for communication and discussion among scholars interested in the subject. Particular encouragement is given to newcomers to the field.