File talk:United Airlines - N558UA - Boeing 757-222 - San Francisco International Airport-0713.jpg

This file has been used in: Benedict Morelli (2017-04-14). United Airlines: Protecting The Company Instead Of Its Customers (in en). huffingtonpost.com. Retrieved on 2017-04-19. web.archives.org

This file has been used in: Benedict Morelli (2017-04-14). 北京pk10冠亚军合数:United Airlines: Protecting The Company Instead Of Its Customers (in en). zzdkl.com. Retrieved on 2017-05-02. web.archives.org

This file has been used in: Meryl Ann Butler. ? (in en). opednews.com. Retrieved on 2018-06-26. web.archives.org

This file has been used in: Savas Abadsidis (2019-02-19). Major Airlines To Offer Non-Binary Options For Passengers (in en). towleroad.com. Retrieved on 2020-09-19. archive.vn