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A restored pneumatic player piano
A restored pneumatic player piano
A player piano performing
A player piano performing
Steinway Welte-Mignon reproducing piano (1919)
Steinway Welte-Mignon reproducing piano (1919)
A player piano roll being played
A player piano roll being played
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Pneumatic (compressed-air) fireless locomotives like this were often used to haul trains in mines, where steam engines posed a risk of explosion. This
Pneumatic (compressed-air) fireless locomotives like this were often used to haul trains in mines, where steam engines posed a risk of explosion. This one is preserved H.K. Porter, Inc. No. 3290 of 1923.
A pneumatic butterfly valve
A pneumatic butterfly valve