Advertisement of October 1, 1873, inviting proposals for carrying the mails of the United States in the states of Oregon, Nevada, and California, and territories of Montana, Wyoming, Colorado, New Mexico, Arizona, Utah, Idaho, and Washington, from July 1, 1874, to June 30, 1878.
APA Citation
United States. Post Office Dept. (1873). Advertisement of October 1, 1873, inviting proposals for carrying the mails of the United States in the states of Oregon, Nevada, and California, and territories of Montana, Wyoming, Colorado, New Mexico, Arizona, Utah, Idaho, and Washington, from July 1, 1874, to June 30, 1878. Washington: Govt. Print. Off..
MLA Citation
United States. Post Office Dept. Advertisement of October 1, 1873, Inviting Proposals for Carrying the Mails of the United States In the States of Oregon, Nevada, And California, And Territories of Montana, Wyoming, Colorado, New Mexico, Arizona, Utah, Idaho, And Washington, From July 1, 1874, to June 30, 1878. Washington: Govt. Print. Off., 1873.
Warning: These citations may not always be complete (especially for serials).