File:Phonautographe.jpg
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![File:Phonautographe.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Phonautographe.jpg/800px-Phonautographe.jpg?20180228103318)
Size of this preview: 800 × 447 pixels. Other resolutions: 320 × 179 pixels | 640 × 358 pixels | 1,024 × 573 pixels | 1,280 × 716 pixels | 2,273 × 1,271 pixels.
Original file (2,273 × 1,271 pixels, file size: 905 KB, MIME type: image/jpeg)