I had loads of that kind of thing in the late '70s, used to do the rounds of the airline offices in London a couple of times a year and come home with bags stuffed full of brochures, timetables, postcards and so on... sadly all ditched in my late teens apart from the postcards which I donated to some young lad I had a chat with on the spectators' balcony at Gatters - glad they went to a good home! Saw a 1976 TWA bicentennial timetable at collector's fair a few years ago, can't quite recall now but I think the price was double figures... Not sure modern mothers would be so happy about 12 year olds travelling up to London and wandering around on their own for a few hours - packed sarnies and some squash in one of the parks or squares and a tatty street map with all my targets marked and a carefully planned route...