1 "Fișier:Masters_of_space-_Morse_and_the_telegraph;_Thompson_and_the_cable;_Bell_and_the_telephone;_Marconi_and_the_wireless_telegraph;_Carty_and_the_wireless_telephone;_(1917)_(14775959933).jpg".
date: 27 July 2014 sourcing circumstances: circa operator: Flickr described at URL: https://www.flickr.com/photos/internetarchivebookimages/14775959933...
_(14775959933).jpg){kind=link}