1. A photographic study of the laryngeal image during the formation of the registers in the singing voice Author(s): French, Thomas R. (Thomas Rushmore), 1849- Publication: [New York? : D. Appleton & Co.?, 1889?] Subject(s): Larynx -- physiologyVoice -- physiologySinging -- physiology
2. The secrets of the voice in singing: explained according to the laws of acoustics and physiology Author(s): Belari, Emilio. Publication: New York : Lees, 1883 Subject(s): Voice -- physiologySinging -- physiology
