If you would like to cite this object in Wikipedia click to expand If you would like to cite this object in a Wikipedia article please use the following template: {{cite web |url=https://collection.sfomuseum.org/objects/1511909989/ |title=The story of United Air Lines : the Main Line airway |author=San Francisco International Airport Museum |accessdate=01 July 2025 |publisher=San Francisco International Airport Museum}}
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