Minor points about Aramco DC6s
A couple of minor points. The DC6s were used to ferry workers, families and cargo between New York and Dhahran. During the DC6 era, Aramco workers signed a 2 year contract. Oil field workers were not shuttled back and forth except at the beginning and end of their contract - not at crew change.
Aramco operated the DC6s from New York (not Houston) to Dhahran. In a later era, Aramco moved its headquarters to Houston and flew charter flights from Houston to Dhahran. During that era, some oil field crews did 28 days on and 28 days off. These crew were shuttled back and forth to between Houston and Dhahran.
Aramco Aviation has had a long and rich history.