@SFOMuseum Instagram Posts This is SFO Museum's archive of the @SFOMuseum Instagram account. from July 08, 2017 There are 2 posts .

#OnThisDay in 1940, TWA (Trans World Airlines) inaugurated Boeing 307 Stratoliner transcontinental service. This image was posted on July 08, 2017. #avgeek #aviationhistory #twa #boeing307 #stratoliner #pressurization  

United Airlines traces its origin to the mid-1920s, with the establishment of four airmail routes that would later become the backbone of United’s route system. This image was posted on July 08, 2017. #united #unitedairlines #themainline #avgeek #aviationhistory #flyingthemainline #airmail