Hi judb,
Thanks for your reply.  I have seen Glenbank addressed as 7 Norton Street and also number 5.  It must have been quite a large block, and apparently it was still there in 1923 :-
1923 The Sydney Morning Herald - Friday 2 November 1923
AGENTS, Take Notice. - The Residential, Glenbank, 5 Norton Street, Ashfield, is sold.    M. Egan.
As for the contents, I reasonably expected to learn bout one of Australia's greatest ever auctions.  Ah well.
Best wishes,
Peter.