Paperback book 8 1/2 x 11 with 297 pages of historical state and county maps, color and black & white photos, postal covers from each county, and brief county history.  Post office locations, important timelines, start dates, first postmaster, post office names and changes, aka local and suggested names that may have been used by the public.  Historical figures including outlaws and madams and county connections.  Railroads, industries, minerals, stage routes and means of transportation that may have affected the life of many of these post offices. Territorial Wyoming was divided into 5 counties from the Colorado to Montana border (map shown in photos) which over time became the 23 counties of today (cover of book shown.)  Maps of each county and post office locations within the county as shown in photos.  Other photos shown are related to a home in  Baggs, Wyoming associated with  Butch Cassidy, a photo of the town of Carbon, Wyoming where outlaw Dutch Charley Burris was hung.  The postal cover from the JW Hugus store postal cover in Rawlins, Wyoming across the street from where outlaw Big Nose George was hung. The postal cover shown of Tipton, Wyoming another place related to Butch Cassidy's "Wild Bunch" and a second train robbery (after the Wilcox robbery). The photo of a major Wyoming railroad trestle constructed east of Tie Siding, Wyoming crossing Dale Creek and the possible location of Dale City called a "Hell on Wheels Town".  And much, much more..... Will autograph if requested.