File:Richard J. Marks headshot 1.jpg
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![File:Richard J. Marks headshot 1.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Richard_J._Marks_headshot_1.jpg/537px-Richard_J._Marks_headshot_1.jpg?20180617173532)
Size of this preview: 537 × 600 pixels. Other resolutions: 215 × 240 pixels | 573 × 640 pixels.
Original file (573 × 640 pixels, file size: 100 KB, MIME type: image/jpeg)