>>1763787I'm replying approximately 9 days too late so you're probably long gone but I'd be happy to try and answer some of your questions. Bear in mind most of my knowledge is specific to where I live, which is the state of South Australia that had its own weird and mostly isolated rail network until 1995 when we converted our interstate lines from broad gauge to standard.
If you want to get real autistic I can go to the rail museum this weekend and take photos for you. They have a real nice collection and I only live 5 minutes away.