Statistics for occurrence #1 of “Fort Lyon” in chapter 6, page 85 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 5: Forts and Artillery.:

...of sixty-eight forts and batteries. These mounted 807 guns and ninety-eight mortars, with emplacements for 1,120 guns more. There were also 35,711 yards of rifle-trenches and three blockhouses. Fort Lyon , above pictured, lay across Hunting Creek from Alexandria. The Parrott guns were rifled cannon of cast-iron, strengthened at the breech by shrinking a band of wrought-iron over the section which co...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Fort Lyon (Colorado, United States) 119 6 13 0 0 user votes
Fort Lyon (Maine, United States) 0 0 0 0 0 user votes

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