The Las Vegas Federal Building (marked "Las Vegas-United States Post Office", originally "U.S. Post Office and Courthouse", Stewart Station colloq.) is "the most refined and best preserved of Las Vegas' Depression-era architecture." Representing "eclectic revivalism", the design by the "Treasury Department's Supervising Architect's office" was completed in early 1931: "construction drawings…showed…mainstream neoclassicism."
To replace the main post office completed by P.O. Sullivan at Second & Carson streets and opened on June 3, 1929, bidding for new construction opened in Washington on July 22, 1931. The initial contractor selected August 1, 1931--"Plains Construction company at Pampas, Texas, on a bid of $237,000"--was replaced in 1932 by "Rosen and Fischel, Inc. of Chicago", and the Las Vegas Federal Building opened on November 27, 1933.
In 1941 the Las Vegas Federal Building was the headquarters of the Las Vegas Army Airfield commander prior to moving to McCarran Field north of the city. The Federal Building reverted to a postal station in 1967 when the Las Vegas' main post office moved to a new building. In 1983 the Federal Building had a US Tax Court, an Army Recruiting Center, and "offices of the Bureau of Land Management [and] Small Business Administration."