Rotary Phones: the Call of History
14:56
Faking It: The Obviously Dubbed Telephone Ring
24:05
Mining Safety Lamps: a Light in Dark Places
16:54
What on Earth Is This Thing?
21:41
CONELRAD: The Voice of Armageddon
31:12
Full Mechanical: The Panel Telephone Switch
20:20
The Dial Comes To Town
15:43
What happens if you leave your phone off the hook?
23:21