Image from page 7 of “An elementary manual of radiotelegraphy and radiotelephony for students and operators” (1916)
Check out this Paternoster image: Image from page 7 of “An elementary manual of radiotelegraphy and radiotelephony for students and operators” (1916) Image by Internet Archive Book Images Identifier: elementarymanual00flem Title: An elementary manual of radiotelegraphy and radiotelephony for students and operators Year: 1916 (1910s) Authors: Fleming, J. A. (John Ambrose), Sir, 1849-1945 Subjects: Radio …