1 pp 1862
During the war, commercial firms located in the North published a variety of war-related maps, primarily for the general public. One example, published in Boston, focused on the theater of war in Virginia and Maryland, where "the decisive battles for Union will be fought." As its title suggests, it was to be used by those following the progress of the war when they received news by telegram, a new technology which gained wide acceptance during the 1840s and 1850s along with the nation’s expanding railroad network. The small legend in the lower left also indicates that it was sold with colored pencils so that movements of the Union forces could be marked in red and those of the Rebel forces in blue.
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