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Calculating Boy, c. 1913...
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3 American Adding Machines...
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"Archimedes Mod. A" Arithmometer, 1906...
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Arithmometer - Original Odhner (Russian), c. ...
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Curta Type II Calculator (Black), 1954...
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4 Adding Machines...
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4 Calculating Machines...
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T-I-M Mod. 1 (Unitas), 1907...
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Madas Model 1 Calculating Machine, 1913-1916...
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Swiss "Conto Model C" Calculating Machine, 19...
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Conto Model A Calculator, 1908...
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Thomas' "Arithmomètre", c. 1870...
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Hines Patent Calculator, 1905 onwards...
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"Archimedes Model C 16" Arithmometer, 1906...
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Calculating Machines ...
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3 Office Antiques Collectors Books by Thomas ...
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"Cryptograph Cypher Machine" by Sir Charles W...
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Rare American 6-Rotor Cryptographic Machine M...
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Transvertex HC-9 (KRYAPP 301) Cypher Machine,...
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Nema T-D Cipher Machine, c. 1948...
