Statistics for occurrence #1 of “Indian Territory” in alphabetic letter D, entry group 3, entry delaware-indians of Harper's Encyclopedia of United States History:

... among them, and they rapidly increased in the arts of civilized life. In the Civil War, the Delawares furnished 170 soldiers for the National army. Having acquired land from the Cherokees in the Indian Territory , they now occupy the Cooweescoowee and Delaware districts; numbered 754 in 1900; are considered the traders and business men of the North American Indians; and still keep up their totemic distinction...
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