Statistics for occurrence #1 of “the Alleghanies” in chapter 48 of Elias Nason, McClellan's Own Story: the war for the union, the soldiers who fought it, the civilians who directed it, and his relations to them.:

...n Washington, Baltimore, Philadelphia, or New York. It could have levied its supplies from a fertile and undevastated country; extorted tribute from wealthy and populous cities; and nowhere east of the Alleghanies was there another organized force able to arrest its march. The following are among the considerations which led me to doubt the certainty of success in attacking before the 19th: The troops ...
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