Improvement in the Velocipede. Improvement in Double-acting Steam Pumps. HANLONS' PATENT IMPROVED VELOCIPEDE. 4I The Railroad to the Pacific. Central Underground Railway. Patents Not Wanted. ALLISON'S STEAM PUMP AND GOVERNOR VALVE., scientific american, 1868-08-19
Improvement in the Velocipede. Improvement in Double-acting Steam Pumps. HANLONS' PATENT IMPROVED VELOCIPEDE. 4I The Railroad to the Pacific. Central Underground Railway. Patents Not Wanted. ALLISON'S STEAM PUMP AND GOVERNOR VALVE., scientific american, 1868-08-19
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