British Airways BOAC BSAA BEA Route MapOriginal vintage advertising poster promoting British airline companies BEA BOAC BSAA British European Overseas S American Airways featuring a colourful graphic design showing three yellow and orange maps marked with flight routes and the respective company logo in white on black backgrounds. In 1949 BOAC British Overseas Airways Corporation (1939 1974) absorbed BSAA British South American Airways (1944 1950) and in 1974 the BOAC and BEA British