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In 1928 Congress passed the first of two National Building Acts that authorized the construction of federal buildings throughout the nation. This massive building program was one of the first efforts undertaken by the federal government to alleviate the unemployment caused by the Depression. The Federal Office Building in Cheyenne was built in 1932 to house Treasury Department operations. Its style is typical of the simplified Neo-classicism utilized for many of the federal buildings constructed by the building program. It was designed by William Dubois, a regionally prominent architect. The original three story 1932 portion of the building was designed with a structural capacity to support an additional four stories. The building has experienced little exterior alteration since the 1937 addition of a fourth story and an elevator access.