U.S. Geographical surveys west of the 100th meridian. Vol. II. Astronomy. Plate No. 1. Plan and elevation of the astronomical observatory at Ogden, Utah. Erected 1873
MLA
U.S. Geographical Surveys West of the 100th Meridian. Vol. II. Astronomy. Plate No. 1. Plan and Elevation of the Astronomical Observatory at Ogden, Utah. Erected 1873. 1873. https://collections.library.yale.edu/catalog/2015873.
APA, 6th edition
U.S. Geographical surveys west of the 100th meridian. Vol. II. Astronomy. Plate No. 1. Plan and elevation of the astronomical observatory at Ogden, Utah. Erected 1873. (1873). [Lithographs, Planographic prints]. https://collections.library.yale.edu/catalog/2015873.
