This doesn't answer your question and it's not my intention to derail the discussion (I don't think asking this will affect whether you get answers) ... but what is the relevance of "the" return fare of "$700" introduced in that particular year?
Was there a massive sudden halving of fares as all carriers obtained 747's or something like that, and one particular carrier dropped to $700 ... or did a whole bunch of carriers suddenly offer a $700 fare?
As in, what is memorable & significant of this particular fare, such that people are going to remember it? And what was "the" $700 fare exactly?
