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With Caudill Rowlett Scott’s Central High School (SS25), the regional headquarters of the General Telephone Company was the other most celebrated mid-twentieth-century modern building in San Angelo. The winner of a 1955 Honor Award from the American Institute of Architects for its design, the building was published in Progressive Architecture in 1955 and 1956. The one-story, flat-roofed original building with windowless brick walls reveals PACE Associates partners’ training under Ludwig Mies van der Rohe at the Illinois Institute of Technology and the firm’s collaboration with Mies on Promontory Apartments (1949) in Chicago. The six-story slab of 1965 on the east side of PACE’s building visually dominates the complex with a strong vertical emphasis of brick walls between exposed white columns and narrow vertical strips of windows.