I'm loving the photos of the old liveries and aircraft, and if I may opine, the more raw images somehow have a charm of their own in that they were captured by a normal oik with a normal camera. A slice of LTN life back in the day.
I can't recall the airline 'Altair', but do remember seeing aircraft with that triangle on the tail, especially in the red livery and I recall seeing the Caravelles in the Air Inter livery at Paris Orly.