The newspaper didn’t bother to describe the eastern boundary of the new Territory. The Organic Act defined that as “the twenty-seventh degree of longitude west of Washington [D.C].” That border, the line between today’s Montana and the Dakotas, ran south all the way to the northern border of Colorado Territory. As described in my blog of March 4th, the resulting "geographic monstrosity" was substantially larger than Texas.
U. S. General Land Office maps combined.
The “usual officers” included a governor, judges, an attorney general, and so on … all of whom would be appointed by the President. That difference would lead to future heated disputes between those officials – mostly outsiders – and the locally-elected legislature.
“The Territory of Idaho,” Oregonian, Portland (April 18, 1863).