The Montana Farming Company was founded in 1882 when Thomas D. Campbell approached President Wilson, J.P. Morgan, Jr., and a group of New York banks to attempt large scale wheat farming that used mechanized equipment.

In 1922, Thomas Campbell purchased the Montana Farming Company and the Corporation changed to the Campbell Farming Corporation and became the world's largest privately owned wheat farm with 10,000 acres and 100 men employed.

The Campbell Farming Corporation ended its farming operation in 1987. In 1996, several buildings from Camp 4 were donated and moved to the museum site.

Camp 4 symbolizes the triumph of mechanized farming in Big Horn County. Only images are left of the lines of wood grain wagons and granaries, the rows of identical combines setting records for bushels of wheat harvested in a day and the workers gathering for dinner in the cookhouse.