Overview Records of 19th-century homeopathic societies including the Homeopathic Institute of Philadelphia, American Provers' Union, Hahnemann Society of Northampton, and the Philadelphia Postgraduate School of Homeopathics. The Homeopathic Institute of Philadelphia appears to be the Philadelphia branch of the American Institute of Homeopathy. The American Institute of Homeopathy was founded in 1844 as a response to the death of homeopathy’s pioneer, Samuel Hahnemann. The Philadelphia branch was...