Advertisement of October 15, 1881, inviting proposals for carrying the mails of the United States in the states of Colorado, Oregon, Nevada, and California; and in Montana, Wyoming, New Mexico, Arizona, Utah, Idaho, and Washington territories, from July 1, 1882, to June 30, 1886

Chicago citation style
United States. Post Office Dept. Advertisement of October 15, 1881, inviting proposals for carrying the mails of the United States in the states of Colorado, Oregon, Nevada, and California; and in Montana, Wyoming, New Mexico, Arizona, Utah, Idaho, and Washington territories, from July 1, 1882, to June 30, 1886. 1881. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/102288322. (Accessed December 11, 2018.)
APA citation style
United States. Post Office Dept, (1881) Advertisement of October 15, 1881, inviting proposals for carrying the mails of the United States in the states of Colorado, Oregon, Nevada, and California; and in Montana, Wyoming, New Mexico, Arizona, Utah, Idaho, and Washington territories, from July 1, 1882, to June 30, 1886. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/102288322
MLA citation style
United States. Post Office Dept. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/102288322>.
Note: These citations are programmatically generated and may be incomplete.