Art. I.—Statistical Account of the Cases of Amputation performed at the Pennsylvania Hospital from January 1, 1860, to January 1, 1870; with the Mortality following this Operation in the Hospital during a period of forty years
Thomas George Morton. "Art. I.—Statistical Account of the Cases of Amputation performed at the Pennsylvania Hospital from January 1, 1860, to January 1, 1870; with the Mortality following this Operation in the Hospital during a period of forty years." American Journal of the Medical Sciences 59.120 (1870) 313-325