Hi folks, new here.
Perhaps this is something covered else where. But I am looking for definitive info on and or better still a photo or two of Diesel traction on the Bowling to Invergordon and onto Lairg oil train workings. In particular during the late 60s and early 70s. As I understand it, this was mainly hauled by class 20s but with the occasional 37 popping up.
Any info/help will be greatly appreciated.
cheers.