Bumping into new technologies: Hey, that's not what a light bulb is supposed to look like! | National Museum of American History
Metropolitan-Vickers "Cosmos" gas filled tungsten incandescent lamp. The lamp shape, pip top and filament layout suggest early design, c. 1920s Stock Photo - Alamy
Art Deco Bauhaus Ceiling Lamp, 1920s for sale at Pamono
1920s OSRAM light bulb - Little Museum Of Foreign Brand Advertising In The R.O.C. 民國中外廣告微博物館
Antique Vtg White GLASS 1 Bulb Flush Mount Wall Ceiling Light Deco 1920s 1930 40 | eBay
some early examples of incandescent lamps (light bulbs), from The Story of the Lamp, by The General Ele… | Lightbulb tattoo, Light bulb drawing, Antique light bulbs