1. Semi-centennial celebration of the introduction of homoeopathy west of the Allegheny mountains: held at Pittsburgh, Penn'a, September 20th, 1887, under the auspices of the Homoeopathic Medical Society of Allegheny County, Pa Author(s): Homoeopathic Medical Society of Allegheny County (Pa.) Publication: Pittsburgh : Stevenson & Foster, 1888 Subject(s): HomeopathyAnniversaries and Special EventsPennsylvania