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Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War: Volume 2. 58 0 Browse Search
Frederick H. Dyer, Compendium of the War of the Rebellion: Regimental Histories 45 5 Browse Search
Rebellion Record: a Diary of American Events: Documents and Narratives, Volume 5. (ed. Frank Moore) 36 0 Browse Search
Emilio, Luis F., History of the Fifty-Fourth Regiment of Massachusetts Volunteer Infantry , 1863-1865 27 7 Browse Search
The Annals of the Civil War Written by Leading Participants North and South (ed. Alexander Kelly McClure) 25 1 Browse Search
Harper's Encyclopedia of United States History (ed. Benson Lossing) 19 3 Browse Search
Horace Greeley, The American Conflict: A History of the Great Rebellion in the United States of America, 1860-65: its Causes, Incidents, and Results: Intended to exhibit especially its moral and political phases with the drift and progress of American opinion respecting human slavery from 1776 to the close of the War for the Union. Volume II. 18 0 Browse Search
Rebellion Record: a Diary of American Events: Documents and Narratives, Volume 8. (ed. Frank Moore) 14 0 Browse Search
Robert Lewis Dabney, Life and Commands of Lieutenand- General Thomas J. Jackson 14 0 Browse Search
Hon. J. L. M. Curry , LL.D., William Robertson Garrett , A. M. , Ph.D., Confederate Military History, a library of Confederate States Military History: Volume 1.1, Legal Justification of the South in secession, The South as a factor in the territorial expansion of the United States (ed. Clement Anselm Evans) 14 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 Fort Hamilton (Ohio, United States) or search for Fort Hamilton (Ohio, United States) in all documents.

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set up in the metal, by cooling a large casting from the exterior. He finally developed his theory of casting a gun with the core hollow and then cooling it by a stream of water or cold air through 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 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 tim