Lincoln City Hall is the former seat of the Lincoln, Nebraska city government. The hall was built from 1874-1879 as the U.S. Post Office and Court House, designed by the office of the U.S. Treasury Department's architect, Alfred B. Mullett. A new post office and court house was built in 1906 and the property was transferred to the city. It was superseded as city hall in 1969 when the city government moved into the City-County Building. Although Mullett is officially listed as the architect, much of the design work may have been carried out by his assistant, William Appleton Potter, who specialized in the Gothic style.