- L.M. Ericsson Skeleton Telephone, c. 1900...
- Complete German Morse Telegraph System, c. 19...
- Prussian Telegraph Receiver, c. 1875...
- Demonstration Model Telegraph, c. 1920...
- Telegraph Station Equipment, c. 1900...
- German Telegraph System by Siemens & Halske, ...
- Electric Fire Telegraph, c. 1910...
- Telegraph Station Equipment, c. 1900...
- Telegraph System by The Prussian Administrati...
- Fultograph Image-Receiving Device, c. 1930...
- Beautiful Original Skeleton Telephone by ...