Great quality pictures, you must have some amazing ones.
Do you have a flickr account? if not you should so these great pictures can be seen by everyone
that was not around then or missed these events.
It might be they will separate at some point and one will pull ballast wagons and the other will pull spoil wagons.
Here is an old picture of double heading, not my picture.
Colour films back then would be different from one brand to another.
Fuji film was warmer than Kodak for transparency film.
Over or under exposure would affect the colour and the type of daylight.
Colour negative film and prints were rarely correct.
You only need to look through some railway books and you will see how many shades of orange there are.
Plus they were repainted many times over the years.
Here are two pictures of Saintfield station in co Down showing it then and now.
Thanks to ernie's irish archive and to the station owner for letting me take some pictures
last summer.