There are many great publications documenting many aspects of the history of the Victorian railways, which can be widely found, including your local library, and the library of the RHSV, for example:
Patrick McMahon Glynn: Letters to His Family 1874-1927 edited G.G. O'Collins, Melbourne, 1974 Romance of the Victorian Railways by Patsy Adam Smith, Rigby, 1980 Hear the Train Blow by Patsy Adam Smith, Penguin edition, 1981 In the Service? A History of Victorian Railway Workers and their Union by Eddie Butler-Bowden, S.Yarra, 1991 Trains, Tracks, Travellers. A History of the Victorian Railways by Marc Fiddian, Pakenham, 1997
Two recent publications produced in conjunction with the 150th celebrations are: History of the Victorian Railways by Robert Lee, Melbourne, 2004 What a Journey. Life in the Victorian Railways 1948-1987 by Tom Yates ARHS, 2004