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Explore Civil War Sources in the Book:

Browse the Corcordances of the Official Records of Peninsula Campaign (1862) and Atlanta Campaign (1864). These concordances isolate the word "railroad" throughout these volumes and allow you to compare the the way the railroad appeared in the 1862 and 1864 campaigns at every level of command.
Dynamic Map and Timeline of Guerrilla Warfare Events in the Civil War, from the Official Records of the War of the Rebellion
Dynamic Map and Timeline of African American Work on the Union Railroads, from the Official Records of the War of the Rebellion. These models trace guerrilla incidents and African American movements and events on the railroads during the Civil War that were recorded in the The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, the U.S. War Department's 128-volume series of Union and Confederate reports and correspondence. This spatio-temporal index, although limited to military bureaucratic texts, opens up the experience of African American labor and emancipation to further inquiry.
Explore the Expansion of Slavery and Railroads in the 1850s. This demonstration is a new updated release in beta development based on a work underway through an NEH Digging into Data grant. This demo includes some data that need to be corrected. The 1850 data are based on published atlases and include completed lines that were not yet fully completed. See the Railroads project "Map Inaccuracies" Case Study for further information on this issue.
Play with Sherman's 1864 Atlanta Campaign Correspondence in Voyeur
(or view the total Union correspondence in 1862 and 1864). These tools allow us to compare the geographic vision of commanders through their writings in the flow of the battle--letters and telegrams. Using Stefan Sinclair and Geoffrey Rockwell's tool, Voyeur, we have assembled and organized the relevant documents in the Official Records for the Peninsular Campaign and the Atlanta Compaign. These are freely available for download and further use by anyone interested in further research or inquiry. (Note that all digitized Official Records sources used in this research were derived from OCR scans conducted by Cornell University's "Making of Modern America" project and much of the "dirty" OCR cannot easily be corrected. For more on the methods we used, please see our forthcoming Note on Methods.)

For more analysis and research discussion, see William G. Thomas's Blog