link to Victoria state museum of a brochure for the opening of Melbourne airport in 1970 that Marg has a physical copy of:
https://collections.museumsvictoria.com.au/items/1697072
if we get time will scan or photograph it and put it here:
British pathe
https://youtu.be/c8GNLYWGcGc
John Gordon opening airport
https://youtu.be/naKzcfOS4mw