@SFOMuseum Twitter Posts Tagged theMainLine This is SFO Museum's archive of the @SFOMuseum Twitter account. There are 54 posts and this is page 5 of 5. See all the tags or all the Twitter posts that have been archived so far.

Learn more early aviation history in "Flying #theMainLine: A History of #United Airlines", post-security, in T3. https://t.co/l3SGXBPfhd This tweet was posted on July 07, 2017.

Airmail service pilots flew in open-cockpit biplanes, fully exposed to the wind and weather conditions. #TheMainLine This tweet was posted on July 07, 2017.

#United Airlines traces its origin to the mid-1920s & 4 airmail routes that would become the backbone of United’s route system. #TheMainLine This tweet was posted on July 07, 2017.

@hharteveldt @united Thanks so much for stopping by! "Flying #TheMainLine: A History of United Airlines" will be up until March 2018! https://t.co/l3SGXC6Q8L This tweet was posted on July 03, 2017.

@TelstarLogistic Thanks so much for stopping by! You caught us during an exhibition change over! "Flying #TheMainLine" will be opening soon! This tweet was posted on June 21, 2017.

Getting ready for "Flying #theMainLine: A History of #United Air Lines", coming soon to Terminal 3! #behindthescenes #sneakpeek This tweet was posted on June 10, 2017.