A map from 1903 of Nevada showing counties and county seats, principal cities and towns, mountain ranges, and rivers. "Nevada, one of the most western of the States of the American Union, was formed from a portion of the territory acquired by the United States from Mexico by the treaty of Guadalupe Hidalgo. The boundary line commences in the centre of the Colorado river, where the 35th parallel of north latitude crosses that stream (near Fort Mojave); thence it runs in a direct north-westerly line to the point where the 39th parallel of north latitude intersects the 120th degree of longitude west from Greenwich (near the centre of Lake Tahoe), thence north on that meridian to the 42d parallel of latitude, thence east on that parallel to that meridian to the Colorado river and down that stream to the place of beginning, enclosing an area of 110,700 square miles. The states is bounded on the S. and W. by California, N. by Oregon and Idaho, and E. by Utah and Arizona. At the time of the discovery of the silver mines (1858-59) what is now the State of Nevada was a part of Utah. By Act of Congress of March2, 1861, Nevada became a Territory; and, with a modification of its boundaries, it was admitted as a State on October 31,1864." - Kellogg, 1903.