Laplante

 
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Serrin's arc lamp, 1859.
Serrin's arc lamp, 1859.
Hughes's printing telegraph, c 1855.
Hughes's printing telegraph, c 1855.
A Morse-Digney instrument room, 1891.
A Morse-Digney instrument room, 1891.
Electrostatic machine with sulphur globe, c 1750s.
Electrostatic machine with sulphur globe, c 1750s.
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