File:Georgetown Observatory drawing.png
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![File:Georgetown Observatory drawing.png](https://upload.wikimedia.org/wikipedia/commons/thumb/3/34/Georgetown_Observatory_drawing.png/800px-Georgetown_Observatory_drawing.png?20191009165013)
Size of this preview: 800 × 567 pixels. Other resolutions: 320 × 227 pixels | 640 × 454 pixels | 1,024 × 726 pixels | 1,368 × 970 pixels.
Original file (1,368 × 970 pixels, file size: 1.13 MB, MIME type: image/png)