@SFOMuseum Twitter Posts This is SFO Museum's archive of the @SFOMuseum Twitter account.
The early days of airmail - a Boeing Model 40-A at Mills Field, 1927: http://t.co/esB6jx1q4F #avgeek #tbt. This tweet was posted on May 08, 2014.
The early days of airmail - a Boeing Model 40-A at Mills Field, 1927: http://t.co/esB6jx1q4F #avgeek #tbt. This tweet was posted on May 08, 2014.