IMPROVED STEAM WHISTLE. EINIG'S STEAM WHISTLE. LOCK LETTER PRESS. HILL'S PATENT LOCK LETTER PRESS. Petroleum. A Horse Power Holster., scientific american, 1879-08-23

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IMPROVED STEAM WHISTLE. EINIG'S STEAM WHISTLE. LOCK LETTER PRESS. HILL'S PATENT LOCK LETTER PRESS. Petroleum. A Horse Power Holster., scientific american, 1879-08-23

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