File:First electrocardiograph machine in New England, cable leads to lab, Peter Bent Brigham Hospital, Boston Herald-Traveler, 1913, from the Digital Commonwealth - 1 22 10 001264 0004 A.tif
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![File:First electrocardiograph machine in New England, cable leads to lab, Peter Bent Brigham Hospital, Boston Herald-Traveler, 1913, from the Digital Commonwealth - 1 22 10 001264 0004 A.tif](https://upload.wikimedia.org/wikipedia/commons/thumb/e/e0/First_electrocardiograph_machine_in_New_England%2C_cable_leads_to_lab%2C_Peter_Bent_Brigham_Hospital%2C_Boston_Herald-Traveler%2C_1913%2C_from_the_Digital_Commonwealth_-_1_22_10_001264_0004_A.tif/lossy-page1-730px-thumbnail.tif.jpg?20240208121413)
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