1. Stethoscopes, chest, tonsil, ... and ear instruments Author(s): Caswell, Hazard & Co. Publication: [New York? : George C. Frye, 1880] Subject(s): StethoscopesEquipment and Supplies
2. [Herschell's double stethoscope] Publication: London: , 1891 Subject(s): StethoscopesEquipment and Supplies