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Volumes

1. Vol 1 Semi-Automatic Bugs — Vol 1: The Pendulum in the Lever Horace Martin's semi-automatic key mechanized the hardest part of sending Morse — the string of dits — with a vibrating pendulum, and in doing so gave the code a whole new voice: the bug's unmistakable swing.
2. Vol 2 Semi-Automatic Bugs — Vol 2: The Vibroplex Menagerie and the Champions A century of models from black-japanned Original to gold-plated Presentation, the rival makers, the fastest fist that ever lived, and why the bug — displaced but never killed by the electronic keyer — is still worth hunting for.