Hi hexagon
It seems I didn’t read the writings on it properly - it says that the particular photographer (whose details are private) does not “under any circumstances” grant permission for copies, nor enter into any correspondence!
I must presume, therefore, that unless anyone knew him personally and might “put in a word” for someone else, it’s a dead duck…. The photo was of a steam train leaving Dunsandle for Loughrea. It’s not even that great a photo, but I like it!