Hi i know a lady that has a lot of information on the Risdon line. Also i am a cousin of your husband as my Nanna was your late mother in laws sister Nellie Roche.
Your post was back in 2002 so i hope you still get this message. Anyway if you answer this i will give you my email address and put you in touch with this lady. I have just come home from her house as her daughter and i have been friends for years and have also got back from Pemberton on sunday after attending my uncles birthday.
Look forward to hearing from you.