I managed to scan the Ballina rail route maps at Murwillumbah Library recently. The Ballina end is from a 1942 map and most of the other end from a 1976 map with map names and scales on each. Some might be interested in this long closed NSWGR line.
Ballina end (3MB) Ballina-1942-3MB.jpg
Booyang end (4MB) Lismore 1976 extract.jpg