40 x 62 cm. Relief shown by hachures and spot heights. Prime meridians: Greenwich and Washington. "Historical and statistical view of the United States, 1860"--Verso. Atlas page numbers at top: 58-59. Arizona became a territory in 1863, and Nevada became a state on October 31, 1864, so this map was either published in 1863 or in 1864 before the end of October. Original publisher: Johnson and Ward.