I only have the one map, I got it from the "The Railfan Shop" ph 98998604, it's titled "Railway Map of Victoria" cost me $2.95, but there's also the Railway Museum at Williamstown.
There's some pretty special sites out there in Country Vic, we found the site of the old Station at Kotta, nothing there at all except the very small, overgrown, remains of a platform, BUT on top of the platform, all on its own was a WW1 memorial to the local boys who lost their lives in WW1, & explaining that certain trees had been planted in their memory..the trees are still there.
Pickles.

