Period

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Cog Wheel Train, Manitou and Pike's Peak Railway, Colorado, USA, William Henry Jackson for Detroit Publishing Company, 1900
GLS18A01_135

Cog Wheel Train, Manitou and Pike's Peak Railway, ...

Large Industrial Gears
GLS18A00_073

Large Industrial Gears

Large Industrial Gears
GLS18A00_074

Large Industrial Gears