“Erie” Type American Bell Candlestick
1893
"R. Krüger" Telephone
1895

"Système Ader" Wall Telephone

1894

About This Phone

Marked on brass plaque and receiver: "Societé Industrielle des Téléphones, Système Ader", serial no. 27308, 10-pencil carbon transmitter under thin wood membrane, 2 receivers, with lightning protection and alarm bell.