Howdy xl59, The stuff you have for sale may be of interest to a guy by the name of Brian Darby whom runs Brian Darby's Vintage Speedway web site.
For those that have'nt seen it, it is well worth taking a look at. Fantastic take on the history and detail on Australian Speedway (car, bike and sidecar)
I sort of gather that he does it as a labour of love and if that's the case not sure if he is into paying for stuff.