 John H. Girdner March 8, 1856October 27, 1933 akanga ari chiremba weNew York akakurumbira uye shamwari yechiremba anozivikanwa anonzi Frank Hamilton, uyo waakaenda naye kuMutungamiri James Garfield mushure mokunge Garfield apfurwa muna 1881. Girdner akanga ari muumbi wetelephone bullet probe iyo yakatanga kushandiswa X-ray dzokutanga dzisati dzaitwa, uye akanga ari piyona mukuisira ganda. Akadzidzisa muzvikoro zvokurapa uye akanga ari munyori wenyaya dzakawanda dzokuseka uye dzouzivi mumagazini. 