William Maurice 1930s with his Wolf Safety lamp.
IMG 20170820 212351428 2
IMG 20170820 212305965 2
The first ever elongated souvenir penny. It was printed on a 1893 Indian Head cent at the Columbian Exposition World's Fair in Chicago.
William Maurice 1930s with his Wolf Safety lamp.
The Wolf Safety Lamp, a miner's lamp that prevented explosions in mines. It won awards for scientific innovation in 1901 in France.
IMG 20170621 165143228 2
Ring Pebbles
UnderMiner

William Maurice 1930s with his Wolf Safety lamp.

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