UCD Student Medical Journal - An absolute staple for almost every doctor around the world, the binaural stethoscope was actually an Irish invention. Dr Arthur Leared (TCD MB 1847, MD 1860) invented
The Stethoscope will Remain Amidst Modern Improvements — Grounds
THE BINAURAL STETHOSCOPE
Top 10 Stethoscope Facts - Ultrascope
It Was Almost Called the Cylinder (& Other Who-Knew Facts about the Stethoscope) – Clinical Correlations
The Binaural Stethoscope: A History – excel-medical.com