You have seen them in antique stores, especially in mining towns: tarnished brass cylinders with a reflective dish on one side and a bracket for clipping them onto a ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This is an Auto-Lite Carbide Mining ...

After around 1915, miners debated which technology they favored to light their work underground, a carbide lamp or a battery light. Both were superior to candles and oil lamps that would blow out when ...