PYE'S DOOR LOCK AGAIN. SHAW'S SASH LOCK. PHOTOGRAPHIC PRINTING MACHINE. GEDNEY'S PISTOL. TALPEY'S SELF-FEEDING SAW. RECENT DISCOVERIES OF SILVER AND GOLD VEINS IN MARIPOSA. IRON-CLAD VESSELS., scientific american, 1862-12-06


PYE'S DOOR LOCK AGAIN. SHAW'S SASH LOCK. PHOTOGRAPHIC PRINTING MACHINE. GEDNEY'S PISTOL. TALPEY'S SELF-FEEDING SAW. RECENT DISCOVERIES OF SILVER AND GOLD VEINS IN MARIPOSA. IRON-CLAD VESSELS., scientific american, 1862-12-06


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