Glad to have been of some help. As for purchasing a copy of the book I am not sure how you could achieve this. There were only 200 copies produced in the first edition in 1924 and I dont know whether there other editions. It was produced on inferior paper using a rather primitive printing technique (Gestetner I think). My copy is rather frail.
It would be possible to copy it if care was taken but this would be better attempted by an american owner rather than from Australia as is my situation. Nevertheless allthings are possible.