I am not sure if this is the appropriate place to put a wanted request but I am after photos of the overhead catenary on the Main South from Granville to Liverpool and the Regents Park Line from Lidcombe to Liverpool, prior to the current stanchions being installed in the 1990's (I think that's the time it occurred). The old stanchions used to be 2 pieces of rail joined together but the current stanchions are just rolled I-beam. I have looked in all of my railway books and have the book Electrification of Sydney and Suburban Railways
but cant find many photos. If I went to the Railway Resource Centre or State Records, where would I start my research??? I know I have asked a lot but I have hit a stumbling block. Thanks for your help.