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Document Max. Freq Min. Freq
Harper's Encyclopedia of United States History (ed. Benson Lossing) 330 40 Browse Search
George Bancroft, History of the United States from the Discovery of the American Continent, Vol. 5, 13th edition. 128 0 Browse Search
Frederick H. Dyer, Compendium of the War of the Rebellion: Regimental Histories 124 14 Browse Search
George P. Rowell and Company's American Newspaper Directory, containing accurate lists of all the newspapers and periodicals published in the United States and territories, and the dominion of Canada, and British Colonies of North America., together with a description of the towns and cities in which they are published. (ed. George P. Rowell and company) 80 0 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 46 0 Browse Search
George Bancroft, History of the United States from the Discovery of the American Continent, Vol. 4, 15th edition. 38 0 Browse Search
George Bancroft, History of the United States from the Discovery of the American Continent, Vol. 6, 10th edition. 26 0 Browse Search
Allan Pinkerton, The spy in the rebellion; being a true history of the spy system of the United States Army during the late rebellion, revealing many secrets of the war hitherto not made public, compiled from official reports prepared for President Lincoln , General McClellan and the Provost-Marshal-General . 24 0 Browse Search
Rebellion Record: a Diary of American Events, Diary from December 17, 1860 - April 30, 1864 (ed. Frank Moore) 21 11 Browse Search
Francis Jackson Garrison, William Lloyd Garrison, 1805-1879; the story of his life told by his children: volume 3 20 0 Browse Search
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Browsing named entities in 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. (ed. Francis Trevelyan Miller). You can also browse the collection for Pittsburgh (Pennsylvania, United States) or search for Pittsburgh (Pennsylvania, United States) in all documents.

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hrough it. So successful was this method that the War Department, in 1860, authorized a 15-inch smoothbore gun. It proved a great success. General Rodman then projected his 20-inch smooth-bore gun, which was made in 1864 under his direction at Fort Pitt, Pittsburg, Pennsylvania. It was mounted at Fort Hamilton, New York Harbor, very soon afterwards, but on account of the tremendous size and destructive effect of its projectiles it was fired only four times during the war. It was almost impossPittsburg, Pennsylvania. It was mounted at Fort Hamilton, New York Harbor, very soon afterwards, but on account of the tremendous size and destructive effect of its projectiles it was fired only four times during the war. It was almost impossible to get a target that would withstand the shots and leave anything to show what had happened. These four shots were fired with 50, 75, 100 and 125 pounds of powder. The projectile weighed 1,080 pounds, and the maximum pressure on the bore was 25,000 pounds. In March, 1867, it was again fired four times with 125, 150, 175 and 200 pounds of powder, each time with an elevation of twenty-five degrees, the projectile attaining a maximum range of 8,001 yards. This is no mean record even compare