Idaho constitution
Article XVII
Section 1

The name of this
state is Idaho, and its boundaries are as follows: Beginning at a point in the middle
channel of the Snake river where the northern boundary of Oregon intersects the
same; then follow down the channel of Snake river to a point opposite the mouth of
the Kooskooskia or Clearwater river; thence due north to the forty-ninth parallel of
latitude; thence east along that parallel to the thirty-ninth degree of longitude west
of Washington; thence south along that degree of longitude to the crest of the Bitter
Root mountains; thence southward along the crest of the Bitter Root mountains till
its intersection with the Rocky mountains; thence southward along the crest of the
Rocky mountains to the thirty-fourth degree of longitude west of Washington;
thence south along that degree of longitude to the forty-second degree of north
latitude; thence west along that parallel to the eastern boundary of the state of
Oregon; thence north along that boundary to the place of beginning.

Structure Idaho constitution

Idaho constitution

Article XVII

Section 1