Original cases with dissections and observations illustrating the use of the stethoscope and percussion in the diagnosis of diseases of the chest: Also commentaries on the same subjects selected and translated from Auenbrugger, Corvisart, Laennec and others

This is the earliest English work on the stethoscope. It "includes the first English translation of Auenbrugger's book on percussion, selected sections from Laennec's book on auscultation, and detailed reports from 39 cases from Forbes's practice in which auscultation and percussion were especially helpful" (W. Bruce Fye). Digital facsimile from the Wellcomcollection.org at this link.
See P. J. Bishop, "Reception of the Stethoscope and Laennec's Book", Thorax, 36, 487-492. https://thorax.bmj.com/content/thoraxjnl/36/7/487.full.pdf