File:1836 Map of the water region of the county of Middlesex exhibiting the mode of supplying Boston & Charlestown with soft water from Spot and Mystic Ponds, by R. H. Eddy, from the Digital Commonwealth - commonwealth wd376670z.jpg
Size of this preview: 800 × 593 pixels. Other resolutions: 320 × 237 pixels | 640 × 474 pixels | 1,024 × 759 pixels | 1,280 × 949 pixels | 2,560 × 1,898 pixels | 9,296 × 6,891 pixels.
Original file (9,296 × 6,891 pixels, file size: 62.34 MB, MIME type: image/jpeg)