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Light and lighting (1908)
Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 551
Ftg. ].—Diagram showing constitution of Gavel. … Fig. 2.—General view of Gavel. illustrate the progress of illuminati©nfrom the remote past up to the presentday. The oil lamp is represented by twopieces of iron from a bracket designed byBenjamin Franklin ; the incandescentmantle by a vial of the original fluid Edison in his early experiments…Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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