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Isaac O. Best, History of the 121st New York State Infantry 4 0 Browse Search
George Meade, The Life and Letters of George Gordon Meade, Major-General United States Army (ed. George Gordon Meade) 3 3 Browse Search
Margaret Fuller, Memoirs of Margaret Fuller Ossoli (ed. W. H. Channing) 3 1 Browse Search
The Daily Dispatch: February 9, 1861., [Electronic resource] 2 0 Browse Search
Capt. Calvin D. Cowles , 23d U. S. Infantry, Major George B. Davis , U. S. Army, Leslie J. Perry, Joseph W. Kirkley, The Official Military Atlas of the Civil War 2 0 Browse Search
George Ticknor, Life, letters and journals of George Ticknor (ed. George Hillard) 2 2 Browse Search
Rebellion Record: a Diary of American Events: Documents and Narratives, Volume 4. (ed. Frank Moore) 2 2 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 2 0 Browse Search
HISTORY OF THE TOWN OF MEDFORD, Middlesex County, Massachusetts, FROM ITS FIRST SETTLEMENT, IN 1630, TO THE PRESENT TIME, 1855. (ed. Charles Brooks) 2 0 Browse Search
William Schouler, A history of Massachusetts in the Civil War: Volume 1 1 1 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 Dorr or search for Dorr in all documents.

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mas had been sent to Nashville. The engineers fortified Franklin, but Schofield, with two corps of Thomas' army, was not strong enough to hold it. At Nashville the skill of the engineers, under Captain (afterward General) Morton and Captain Merrill, had enabled General Thomas to take his stand and hold on until he was ready to move against Hood. A tripod for surveying the battlefield: map-making from pulpit rock, Lookout Mountain The tripod signal in the background was erected by Captains Dorr and Donn, of the United States Coast Survey, in the triangular survey of the triple battlefield for making the official maps. In the West, the operations of the Federal engineers shed luster on their corps. Seventeen field and subaltern officers served constantly in the Western Federal armies; and though they had no regular engineer troops under them, the volunteers who received training from these officers proved their worth. The army under Sherman had with it nine able engineers und