'In 1978 it became the first airport that was  hub to 2 airlines--American & United'
Chicago O\'Hare
AIRLINE & HUB: In 1978 it became the first airport that was  hub to 2 airlines--American & United
In 1978 it became the first airport that was  hub to 2 airlines--American & United
In 1978 it became the first airport that was  hub to 2 airlines--American & United
AIRLINE & HUB
Chicago O\'Hare
AIRLINE & HUB