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To the Editor:—
My attention has been called to an editorial comment in The Journal, October 18, which speaks of Dr. Geckeler's reproductions of heart sounds on phonographic records. You make the statement that he "no doubt conceived the technic." I thought that you might be interested in knowing that we have on file at the Army Medical Museum records of heart sounds prepared and deposited with us by Dr. Benjamin Manchester of Washington, D. C., in 1939. I understand that Dr. Geckeler knew of these records.
Ash JE. PHONOGRAPHIC RECORDS OF HEART SOUNDS. JAMA. 1941;117(25):2190. doi:10.1001/jama.1941.02820510078031