Théâtrophone
...that the Théâtrophone service (1890-1932) allowed the subscribers to listen to opera and theatre performances over the telephone lines?
...that the <b id="mwA5s"><a href="./Théâtrophone" id="mwA5w" rel="mw:WikiLink" title="Théâtrophone">Théâtrophone</a></b> service (1890-1932) allowed the subscribers to listen to opera and theatre performances over the telephone lines?