Jim Wades, WB8SIW, International President of the Morse Telegraph Club, posted a link to this video on the slowspeedwire Yahoo Group. He writes:
This video is just too good. Both land line and radiotelegraphers will enjoy this immensely. Sounders in resonators, early teleprinters, NZ HRO receiver copies, mercury vapor rectifier tubes, shortwave transmitters, a great view of the Queen Mary’s shipboard radio room. It’s all here. Enjoy!