| Early Edison light bulbs at Edison Estate Museum. Fort Myers, FL. | Tungsten Mazda light bulbs (c1910) at Edison Estate Museum. Fort Myers, FL. | Incandescent light bulb in Edison's Menlo Park Laboratory at Greenfield Village. Dearborn, MI. | Replica of Edison's original light bulb (1929) at Corning Museum of Glass. Corning, NY. |
| Swiss gold pocket watch (1927) with engraved filament light bulb given to Edison by Charles Willis Ward. Fort Myers, FL. | Mazda electric light bulb tester (1924-34) at Corning Museum of Glass. Corning, NY. | Light bulb with HH initials & elephant promoting Hoover's record of the electrification of America in his political efforts at Hoover Museum. West Branch, IA. |
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