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Caption: Dr. Alexander McDonald, still image, Photographs, 1861 - 1871, United States Sanitary Commission, Marshall & Co.
Credit: Album / quintlox
Image size: 2358 × 3768 px | 25.4 MB
Print size: 20.0 × 31.9 cm | 928.3 × 1483.5 in (300 dpi)