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Notes
Cropped, sized, and prepared for use here by John Osborne, Dickinson College, October 25, 2011.
Image type
engraving
Original caption
Fort Warren is on George's Island and commands the main entrance to Boston Harbor. It is a strong work of masonry, with five fronts ... Around the main work is a ditch, 30 feet in width. The entire circuit of the fort is 3136 feet.
Source citation
Benson J. Lossing, The Pictorial Field Book of the Civil War in the United States of America (Hartford, CT: T. Belnap, 1874), 155.