@SFOMuseum Instagram Posts This is SFO Museum's archive of the @SFOMuseum Instagram account. from October 19, 2021

During the 1920s and early 1930s, airlines found it difficult to make a profit in commercial aviation without a lucrative airmail route contract. This image was posted on October 19, 2021. #panamerican #panam #paa #avgeek #aviationhistory