The Braehead Ranch is significant for its association with the settlement of the Upper La Prele Valley in Converse County and as a very successful ranch where cattle were raised. Braehead is also significant for its association with the ranch's founder, George Harry Cross, who was a distinguished rancher and businessman as well as government official who served in the Wyoming State Senate and as a Converse County Commissioner. George Harry Cross initially established a very modest log homestead in an area of Wyoming that was undeveloped, and quickly succeeded in expanding his ranching operations.

The ranch became a social center and the Beaver Post Office was located there for fifteen years. Braehead Ranch is named for the home of Cross's ancestors from Scotland although Cross himself was from Canada. He moved to Wyoming Territory in 1875. He purchased property in the La Prele Valley during the early 1880s and had a small log cabin constructed for him by Peter George. He brought his bride, Lea Marie, to Wyoming in 1884 to live in the modest cabin. The ranch has retained a great deal of its original appearance and there are 18 significant historic features. Few modern structures have been added to the ranch and a substantial number of the original nineteenth and early twentieth century Cross buildings survive.

The La Prele Work Center is located in the La Prele Creek drainage on the southwestern slopes of the Laramie Range in southern Wyoming. It was originally built as a remote ranger station and converted into a work center when the La Prele Ranger District was discontinued in 1956. The USDA Forest Service facility has three contributory historic buildings built from 1937 to 1941.

Present at the site are an Office/Dwelling, Dwelling, and Shop/Garage. The buildings illustrate the use of standard architectural plans typical of the construction of ranger stations during the Depression. Built by the Civilian Conservation Corps, it reflects the contribution of this Federal Works program to the expan