Its as rare as hens teeth but if you can put up with reading digital copies of books Patrick Whites first novel "Happy Valley" is available through the HathiTrust.
Some interesting articles appearing in the Canberra Times too.
http://www.canberratimes.com.au/entertainment/books/patrick-whites-rare-first-novel-revived-for-a-new-audience-20120525-1za3g.html
What a shame the Art Gallery of NSW Chooses to not display this Portrait of Patrick White by his friend
Roy de Maistre .
Source: http://www.artgallery.nsw.gov.au/work/47.1972/