Reel dancing! Mercury "Living Presence" stereo tape, catalog number MDS5-4. Not an easy one to find; this one's from my collection.

     

    Variable-speed cutting: Marie Hippolyte Rose making a record in 1878. From Sound and Hearing, 1965.

     

    In 1974, they knew how to build receivers!

    Nearfield listening at its finest. Courtesy of Wikimedia Commons/Arthur T. Cahill.

     

    We're still trying to figure out how this thing works. From Audio, July 1977.

     

     

     

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