A number of books have been written about Wyoming Post Offices. They include:

Gallagher, John S. and Alan H. Patera. Wyoming Post Offices 1850-1980. Burtonsville, MD: 1980.

Gallagher, John S. and Alan H. Patera. A Checklist of Wyoming Post Offices 1850-1980. Burtonsville, MD: 1980.

Meschter, Daniel Y., compiler. The Postoffices of Wyoming  July 25, 1868 to December 31, 1975.  The Author, 1976-1978?

Primary sources about Wyoming's post offices include:

Official Register of the United States. Washington, D.C. : Government Printing Office, 1816-1959.

Record of Appointment of Postmasters 1832-September 30, 1971, Wyoming. National Archives Microfilm Publication, M 841, Roll 145. Washington, D.C. : National Archives, National Archives and Record Service, 1973.

Post Office Department Records of Site Locations, 1837-1950, Wyoming. National Archives Microfilm Publication, M 1126, Rolls 675-680. Washington, D.C.: National Archives, National Archives and Record Service, 1980.