
31.		Tecnica delle comunicazioni sui cavi sottomarini / P. Fanti Autor: Fanti, P.
32.		Telephonology / H. R. Van Deventer Autor: Deventer, H. R. van Data Publicação: 1910
33.		Technical telegraphy : answers and solutions
34.		Common battery telephony simplified Autor: Atkins, Walter
35.		Manuel pratique du téléphone : installations privées: téléphone microphone & radiophone / Théodore Schwartze Autor: Schwartze, Théodore
36.		Telephones: their construction, installation, wiring, operation, and maintenance : A practical reference book and guide for electricians, wiremen, engineers, contractors, architects, and others interested in standard telephone practice / W. H. Radcliffe, H. C. Cushing Autor: Radcliffe, W. H.; Cushing, H. C. Data Publicação: 1908
37.		The practical telephone handbook and guide to the telephonic exchange / Joseph Poole Autor: Poole, Joseph Data Publicação: 1895
38.		The electric telephone / Edwin J. Houston, A. E. Kennelly Autor: Houston, Edwin J.; Kennelly, A. E. Data Publicação: 1896
39.		American Telephone Practice / Kempster B. Miller Autor: Miller, Kempster B. Data Publicação: 1905
40.		Recorders, direct writers, wheatstone receivers, etc