Report upon United States geographical surveys west of the one hundredth meridian : Astronomy and barometric hypsometry. Vol. 2 / in charge of first lieut. Geo. M. Wheeler , under the direction of brig. gen. A.A. Humphreys , published by authority of the Honorable the Secretary of war in accordance with Acts of Congress of June 23, 1874, and February 15, 1875 .— : Government printing office, 1877 .— 589 с. — Lang: eng .— URL: https://rucont.ru/efd/130281 (дата обращения: 08.11.2025)