Cite

U.S. geographical surveys west of the 100th meridian. Vol. II. Astronomy. Plate no. 2. Topographical sketch showing observatory site and surroundings at Odgen, Utah. Surveyed 1877. Prepared under the direction of 1st Lt. Geo. M. Wheeler, corps of engrs. U

MLA

The Graphic Co., New York, et al. U.S. Geographical Surveys West of the 100th Meridian. Vol. II. Astronomy. Plate No. 2. Topographical Sketch Showing Observatory Site and Surroundings at Odgen, Utah. Surveyed 1877. Prepared under the Direction of 1st Lt. Geo. M. Wheeler, Corps of Engrs. U. 1873. https://collections.library.yale.edu/catalog/2016494.

APA, 6th edition

The Graphic Co., N. Y., New York, W., & Del., L. (1873). U.S. geographical surveys west of the 100th meridian. Vol. II. Astronomy. Plate no. 2. Topographical sketch showing observatory site and surroundings at Odgen, Utah. Surveyed 1877. Prepared under the direction of 1st Lt. Geo. M. Wheeler, corps of engrs. U [Lithographs, Planographic prints]. https://collections.library.yale.edu/catalog/2016494.