Youtube's got everything, including this Encyclopedia Britannica 16mm film about "jet travel", circa 1960.

Being a grade school kid of the seventies, we watched hundreds of EB films on many subjects. But this has got to be the coolest one they made. Look how nicely everyone is dressed, how uncrowded the airport is. Truly the Golden Age of flying.

YouTube - UNITED AIRLINES JET TRAVEL IS NEW & EXCITING


I also never knew the DC-8 used containerized cargo for baggage.