The Blue Gables Motel is eligible under Criteria A and C at the local level of significance. The roadside accomodation is located in Buffalo, where motor courts and motels were an important part of the local economy due to the town's location on U.S. Highway 16 (US 16), a route for recreational travelers across the Big Horn Mountains and to the national parks further west. It is therefore eligible under Criterion A in the areas of commerce and recreation/entertainment. The use of log cabins and "western design" as well as the eponymous name that referred to the gable-roofed cabins, makes the property an example of where architecture was used to capture the attention of the traveling public. For this reason, the property is also eligible under Criterion C for architecture. It is an excellent example of the cabin court expanded to provide the amentities of a more modern motel. The property conveys the early period of construction and the expanded motor court during the 1950s and 1960s and, more importantly, a roadside accommodation during the height of the post World War II travel boom.  Therefore the period of significance is from 1941 to 1967.  

This thematic study includes twelve post offices owned and administered by the U.S. Postal Service (USPS) throughout the State of Wyoming. These include the Basin, Greybull, Douglas, Lander, Torrington, Thermopolis, Buffalo, Kemmerer, Powell, Yellowstone, Evanston, and Newcastle Main Post Offices. The buildings represent a continuum of federally constructed post offices allocated to the state between the turn of the century and 1941. The buildings exhibit a variety of styles and sizes but maintain a common demeanor representative of the federal presence. All of the buildings were constructed from standardized plans developed from guidelines provided by the Office of the Supervising Architect in the Treasury Department. Variations in design styles reflect both the transition in the design philosophies of the Supervising Architect and the requirements developed in response to the Depression. These variations in design, as well as functions are also somewhat related to the communities in which they were placed and reflect the economic, political, and governmental context of those communities.

The Buffalo Main Street Historic District contains historically significant buildings primarily dating from 1900 to 1932. This one and a half block district extends diagonally along Main Street at the heart of the larger commercial area. It is divided midway in the block between Fetterman Street and Fort Street on the north. Clear Creek, originally the impetus for locating Buffalo at this site runs under Main Street just south of this boundary. Angus Street serves as the southern boundary. Buffalo's buildings are typical of other commercial structures constructed in Wyoming and the West during the same period, and are representative of the cattle industry's recovery from weather, political battles of the 1880s and 1890s, and the trend for growth experienced at the turn of the century. Facade details represent a simple stylistic approach to commercial design. Most of the buildings are constructed of brick, a few are stone, and some have been stuccoed. The buildings in the Buffalo Main Street Historic District represent a prosperous commercial area supported by the agricultural base of the upper Powder River Basin in northern Wyoming.

The Johnson County Library Building is situated on the northwest corner of the County Courthouse grounds. It was built in 1909 of native stone. It is a fine example of the Neoclassical style of architecture. On January 28, 1909, the local newspaper of Buffalo reported that Judge Parmalee had returned from visiting libraries in Cheyenne and Laramie, Wyoming. He said that Andrew Carnegie had agreed to provide $12,500 for erection of a library building in Buffalo, if the County would furnish the site and $1,250 a year for maintenance. Citizens of Johnson County agreed, and a portion of the Courthouse grounds was donated by the County Commissioners upon which to build the library.

The Holland House, constructed in 1883 along the town's main street by successful rancher William H. Holland, was one of the first brick residences built in Buffalo, Wyoming and is a good example of a late Victorian vernacular brick house. The house is significant for its association with the settlement of the town of Buffalo and because of its association with the lives of the Holland family who were active participants in local government during both the nineteenth and twentieth centuries.

The Johnson County Court House, constructed in 1884, is a good example of the Italianate style of architecture. Many of the early photographs of Buffalo, Wyoming, show the Johnson County Court House, a beautiful two-story red brick building, towering over ox teams on a muddy Main Street. This is one of the oldest structures standing in the state of Wyoming, was the sixth county courthouse to be built, and is the second oldest courthouse in Wyoming retaining its original character and still used as originally designed.

The cornerstone of the Methodist Episcopal Church, also known as the First United Methodist Church, was laid August 17, 1898, and placed within the stone were a Bible, a hymnal, a copy of the Church Discipline, several church papers, and some coins. The church was dedicated on May 28, 1899, having been built by Pastor E. J. Robinson and members of the congregation. The ornamental features and details of the exterior combine with an especially functional plan of the interior to provide beauty, comfort, and convenience for the worshipper. The interior of the church follows the Akron plan, which typifies many Methodist churches in the West. The emphasis in this plan, developed in Akron, Ohio, is on good acoustics, sight lines, and flexibility, along with the focus on the pulpit and communion table. The elevated platform for preaching is placed in the corner of the audience room, with the seating in circular pattern. The plan was originated and developed between 1879 and 1885 by George Washington Kramer, upon the suggestion of the father-in-law of Thomas A. Edison.

St. Luke's Episcopal Church was built in 1889 of red brick, in the Gothic Revival style of architecture. The church displays many noteworthy architectural features, and is considered one of the best examples of the Gothic Revival architectural style in the state of Wyoming. The interior plan, with a small narthex, long narrow nave, chancel elevated by two steps, sanctuary elevated by two more steps, typifies the plans of small Episcopal churches throughout the country. The cornerstone was laid in 1889 by the Masonic Lodge of Buffalo. The builder, Thomas Hutton, used red brick made by the Curran brothers in their brickyard on the west side of town.

The Union Congregational Church, one of the first two churches established in northern Wyoming Territory and the first church in Buffalo, was incorporated in 1884, the same year the town of Buffalo was chartered. Situated on the top of a steep hill, the church was a plain, gable-roofed, rectangular, frame structure. The members of the church had constructed a building large enough to hold 200 people and to serve as a center for religious and social activities. Besides religious services, this structure housed dramatic production, concerts by local talent, old-fashioned spelling bees, and other gatherings. The present configuration of the church is the result of a remarkable plan formulated by the Reverend Charles Gray Miller and put into effect in 1911-1912 to enlarge the church. A basement was constructed on the lower slope of the hill to the west and the church was moved onto it. The parsonage, which was built in 1910, is just northwest of the church and on a level with the west side of the basement.