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Hugo Diemer
J. Slater Lewis, late 19th century.
J. Slater Lewis, late 19th century.
Patent drawing of Slater Lewis' Insulator for Telegraph Wires, 1883
Patent drawing of Slater Lewis' Insulator for Telegraph Wires, 1883
Title page, 1896.
Title page, 1896.
Scheme how to incorporate the labour costs into the factory accounts by Garcke and Fells (1887/89).
Scheme how to incorporate the labour costs into the factory accounts by Garcke and Fells (1887/89).