Statistics for occurrence #1 of “Indian Territory” in chapter 17 of John G. Nicolay, A Short Life of Abraham Lincoln, condensed from Nicolay and Hayes' Abraham Lincoln: A History:

... expectation by the expiration of the term of service of his three months regiments, and began to be threatened by a northward concentration of Confederate detachments from the Arkansas line and the Indian Territory . The neglect of his appeals for help placed him in the situation where he could neither, safely remain inactive, nor safely retreat. He therefore took the chances of scattering the enemy before h...
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