Pennsylvania Central Airlines Tee

PCA, based at the new Allegheny County Airport near Pittsburgh, continued to add routes, notably to Chicago in 1938, and aircraft, notably the Douglas DC-3 in 1939. In 1941 PCA moved its headquarters to the new Washington National Airport in Arlington, Virginia, becoming one of its three original tenants; PCA had been consulted during the airport's design. The row of office buildings next to its hangars became "mahogany row" and the airline adopted the slogan "The Capital Airline," with its aircraft dubbed "Capitaliners." By 1947 its route network no longer reflected its name, and on April 21, 1948 the airline adopted a new insignia, colours and name: Capital Airlines.